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INTRODUCTION

First things first, this piece is really long. If you don't want to read it all right now, I recommend bookmarking it so you can come back to it later.

Secondly, this timeline contains all the spoilers, up to and including Come Along With Me and Distant Lands: BMO. If you haven't watched BMO yet, use the "hide Distant Lands spoilers" button at the top of the page. I also recommend you read all the canon media listed in the sources section below, especially The Enchiridion & Marcy's Super Secret Scrapbook, since a lot of the timeline draws from that.

I am from the UK, so one must pardon any British spelling or grammar.

Please leave your thoughts and criticisms in the comments section at the bottom of the page. If you would like to message me privately, send a PM to one of my social media accounts, linked at the top of the page.

Enjoy!

Special thanks

This piece was inspired by several Adventure Time timelines published before it. The main reason I started this project was because the timeline by RedLionKing has become very outdated and only deals with the core storyline of the show's past, although my version isn't quite as beautifully written so I recommend you check it out anyway. Also credit to this concise timeline by Viernes de Siluetas, who originally came up with the date system used on this website.

Thanks to Uncivilized Elk for his in-depth episode analysis videos which have inspired some details of the timeline, and thanks to all the editors and transcribers on the Adventure Time fan wiki without whom this task would have been a lot more arduous.

Lots of credit to SpiderCider and Décadent for translating this entire piece into Korean. 🇰🇷 Click here to read it! Although it hasn't been updated since The First Investigation came out and doesn't include any of the present day sections so it's quite out of date now. If anyone is interested in providing translations for any other languages, send me a PM.

And of course, thanks to Pendleton Ward, Adam Muto, and the entire Adventure Time crew for creating one of the most deep, complex, and inspiring worlds in the history of children's television.

Sources

Adventure Time is a large franchise, and as a result it has spawned a lot of spin-off media, such as comics, graphic novels, and video games. However, a lot of this officially licensed material is written without the creative input of the show's crew, so is usually considered non-canon.

This timeline is designed to be as complete as possible, and therefore contains information from canon as well as non-canon sources. Non-canon information has been clearly highlighted using pink boxes. If you would rather only see canon information, you can simply ignore these pink boxes, or you can use the button at the top of the page to hide them completely.

The following stories are considered canon on this site:

All Adventure Time episodes except for A Glitch is a Glitch, Food Chain, Bad Jubies, and Diamonds and Lemons.

The Distant Lands specials.

The Graybles Allsorts and Frog Seasons shorts, as well as The Wand.

The Fionna & Cake comic miniseries by Natasha Allegri.

The video game Explore the Dungeon Because I DON'T KNOW.

The Enchiridion & Marcy's Super Secret Scrapbook by Martin and Olivia Olson.

The 2015 Spoooktacular comic book, by Hanna K. Nyström.

The Islands graphic novel by Ashly Burch.

All other media is considered non-canon. Click here for a list of every single piece of canon and non-canon media which has been considered for the timeline. I have also considered things like promotional art and social media posts from members of the show's crew, but these are marked as non-canon. Storyboards and other production material might also be sourced, but only for clarification; cut scenes do not count. Scrapped episodes also do not count. Whenever I make a statement or pull a quote from somewhere, I will show the source in square brackets, [like this].

All dates are organised around a year zero, which is the year of the detonation of the Mushroom Bomb and the impact of the war-time Catalyst Comet. BMB stands for Before Mushroom Bomb and AMB stands for After Mushroom Bomb. The letter c before a date stands for circa, and indicates that this is an estimated date. The letter X is used to denote any digit (e.g. 99X could be any year from 990 to 999). Since the beginnings and ends of years are not clear, many events may be one year off. Where applicable, the New Year is assumed to be Finn's birthday.

For labelling sections with an equivalent real-life date, I have assumed that 0 AMB = 2010 CE. See the section on the Great Mushroom War for evidence supporting this date.

The detonation of the Mushroom Bomb and the impact of the war-time Catalyst Comet happen at approximately the same time. Uniting these two pivotal events makes it much easier to put a date to things, so I have assumed that they both take place in exactly 0 AMB.

And now, without further ado, let's begin...

THE PAST

This section covers the past, spanning the time from the beginning of existence up to 996 AMB.

c. 13.8 billion BMB/BCE

The Beginning of the Multiverse

quote "Before there was time - before there was anything - there was nothing. And before there was nothing, there were monsters." The Lich [Gold Stars]

In the very beginning, reality exists as a chaotic sea of monsters. Beings such as Orgalorg and the Lich reside in this writhing mass. By incomprehensible chance, the monsters eventually come to a common agreement on the state of reality, and this consensus becomes the Multiverse. According to an ancient tome called the Enchiridion, the Multiverse is therefore not actually material. The Multiverse is an emergent product of consciousness rather than consciousness being an emergent product of the Multiverse. Every sentient being that lives in the Multiverse paradoxically maintains its existence by experiencing it, and this also means that every sentient being has an existence beyond the material, known as their soul. [Gold Stars, The Enchiridion & Marcy's Super Secret Scrapbook]

quote "Third Orb does not exist", said the Sage. "Why?" asked the Student. "Because the Multiverse", said the Sage, "within which Third Orb exists, does not exist. The Multiverse is a Consensus Reality shared by the Minds of all Sentient Beings. If they were to Die, the Multiverse, as such, would suddenly blink out of existence, vanish, be no more." "Why?" asked the Student. "Because", said the Sage, "there would be no one to Perceive It." Wizards' Enchiridion, ch. 1 [The Enchiridion & Marcy's Super Secret Scrapbook]

Other than this, the origins of the Multiverse are largely unknown. Nobody knows where the monsters came from or what the true nature of reality is. Everything we know about the world before existence comes from that single glimpse granted by the Lich. [Gold Stars]

quote "Where did the Multiverse come from? Since logic dictates that asking this question must result in an infinite regression - What created the Multiverse? And what created the Thing that created the Multiverse? Etcetera - this suggests that the mental engine of logical thinking is not designed to determine the Answer." Wizards' Enchiridion, ch. 1 [The Enchiridion & Marcy's Super Secret Scrapbook]

c. 13.8 billion BMB/BCE

The Structure of Existence

The Multiverse imagined by the primordial monsters is composed of a vast (perhaps infinite) number of "dimensions" which each hold a universe. One of these is the Earth Dimension, which contains the planet Earth (sometimes referred to as "Third Orb") as well as all the other planets, stars, and galaxies in our own universe. Other dimensions include the Astral Plane, the Crystal Dimension, Lumpy Space, the Nightosphere, the Citadel, and many more. Amidst this complex system of dimensions is the Time Room. [The Enchiridion & Marcy's Super Secret Scrapbook, Still, Crystals Have Power, Trouble in Lumpy Space, Return to the Nightosphere, Escape from the Citadel, The Lich]

quote "At the centre of the Multiverse is a dimension called the Time Room, believed to be the quasi-corporeal dwelling place of the almighty Prismo. The Time Room is the single dimension that exists outside of time. The Time Room produces time waves that are experienced by other dimensions. Some dimensions have permanent links that allow travel to and from. Others become linked temporarily by naturally forming wormholes. And others can become linked artificially by magical portals, torn open by items of great power. An activated portal creates a time dilation in which either end of the portal experiences a temporal synchronisation allowing for the safe passage of particles through a non-local region of space-time." Booko [The Lich]

The physics behind the concept of the Multiverse is somewhat explained in chapter four of the Wizards' Enchiridion, albeit in a very hand-wavy pseudo-scientific way. To prevent all of the dimensions from catastrophically colliding with one another, all particles in a specific dimension have their own unique "frequency". Particles with different frequencies reside in different dimensions. Adjusting this frequency allows for interdimensional travel. Another property of each dimension is its "elasticity", which determines how easy it is to change the frequency of particles within that dimension. As stated above by Booko, dimensions can be interlinked if the frequencies of the particles in a local region of both dimensions can be somehow synchronised, hence forming a kind of gateway called a "portal". The more elastic a dimension is, the easier it is to open a portal. [The Enchiridion & Marcy's Super Secret Scrapbook]

A very rudimentary form of temporal synchronisation is demonstrated by Finn the Human (a character who will be introduced later) when he interacts with the little people, who reside in "a different dimensional plane" according to Jake the Dog (another character who will be introduced later). Finn shakes the little people, which synchronises their frequencies enough to allow for brief interdimensional communication. [All the Little People]

The elasticity of a dimension has other effects besides ease of interdimensional travel. For example, highly elastic dimensions are more easily influenced by magic (more on that in a couple of sections), and are more likely to allow for interspecies hybrids to be born. The most extreme known examples of hybrids are Jake's descendants, who contain genes from at least four species; bears, rainicorns, dogs, and shape-shifters. The elasticity of a dimension can vary over time, causing there to be periods during which magic is stronger or weaker than usual. [The Enchiridion & Marcy's Super Secret Scrapbook, Ocarina, Elemental]

note

A slightly more scientifically rooted explanation for the structure of the Multiverse is alluded to in storyboard panels from Crossover. The panels cite a 1994 Scientific American article by physicist Andrei Linde which talks about the eternal inflation model. However, this model has never been explicitly referenced in the show and is pretty much irreconcilable with the other model.

One final principle of the Multiverse is the concept of "Amok Time", which states that causality can sometimes be reversed. This allows for accurate predictions of the future and the occasional bit of time travel. [The Enchiridion & Marcy's Super Secret Scrapbook]

non-canon information

According to one account, there is a place at the very beginning of time called the Vanishing Point. Anyone who gets trapped there will be erased from history. Jake the Dog claims to have seen the Big Bang while travelling back in time to visit the Vanishing Point. [Beginning of the End #1 and #3]

c. 13.8 billion BMB/BCE

The Cosmic Entities

Prismo, who was briefly mentioned earlier, is one of the many god-like "cosmic entities" who make up the pantheon of the Multiverse. Most of them have a specific purpose within the elaborate clockwork of existence.

Prismo is a Wish Master and the keeper of the Time Room, capable of granting one wish to anyone who succeeds in visiting him. He takes the form of a friendly pink two-dimensional projection of a human figure. He is kept alive by the dreams of an old man who sleeps in the floating ruins beyond the Time Room. [Finn the Human, Wake Up]

The Cosmic Owl is in charge of monitoring the dreams of every being in the Multiverse and chooses which ones will come true. Dreams containing the Cosmic Owl are therefore invariably prophetic, although these dreams are often metaphorical rather than literal. Dreams containing the Cosmic Owl in which the dreamer sees their own death are known as "croak dreams", and will accurately predict the death of the dreamer. The Cosmic Owl lives in a motel made of stars, and often visits the Time Room for game nights with Prismo. The fact that Prismo is the manifestation of a dream possibly hints at a deeper connection between Prismo and the Cosmic Owl. [The New Frontier, Jake the Dog, Hoots]

Death governs the fifty Dead Worlds, which hold the souls of the deceased. He takes the form of a humanoid with an animal skull for a head. He lives in a castle of light in the Land of the Dead, and is in a romantic relationship with a two-headed snake deity named Life. [Death in Bloom, Sons of Mars, The Gift That Reaps Giving]

The Catalyst Comet is a cosmic entity that operates on a millennium-long cycle. [Astral Plane]

quote "Every one thousand years, the Catalyst Comet mysteriously reincarnates itself and collides with Earth, bringing with it an Agent of Change." Grob Gob Glob Grod [Astral Plane]

Every comet strike brings great change to Earth by delivering a being known as an "Agent of Change" or "Comet Avatar". Sometimes, the Agent of Change will succeed in turning the world into a better place. But sometimes, the Comet delivers great evil into the world, and an era of destruction and death ensues. The Agents of Change are reincarnated after death so that they can continue their mission over the course of more than one lifetime. The Comet takes on a different colour every time it strikes. Four have been depicted: Green, Yellow, Blue, and Purple. The agents that they spawn will go on to become some of the most influential beings in history. [Evergreen, Orgalorg, The Comet]

GOLB is the cosmic entity embodying chaos and discord, taking the form of an immense red infantile creature with a pyramid-topped head. When he consumes people, they are reset to their primal state and eventually removed from existence in such a way that not even the most powerful magic can bring them back. [You Forgot Your Floaties, Come Along With Me Part 4]

Many of the other monsters from before time likely exist as cosmic entities, including Orgalorg. In one ancient book, another monstrous deity named Malus is seen alongside GOLB. [Gold Stars, Come Along With Me Part 3]

Prismo apparently has a "boss" whose identity is unknown. [Crossover]

Some other characters are depicted as god-like but appear to live in singular dimensions alongside mortal peers. Examples of such beings include Abraham Lincoln, Party God, and Grob Gob Glob Grod. [Sons of Mars, The Party's Over Isla de Señorita]

non-canon information

According to one account, a cosmic entity named Chronologius Rex, also known as "The All-Time", rules over the Vanishing Point. Oaths made in the name of this deity must be upheld, otherwise the one who breaks the oath will be abducted to the Vanishing Point and deleted from history. [Beginning of the End #1] Another account claims the existence of four cosmic entities who represent four of the five elements. The elements and the entities who represent them will be explained shortly. [Adventure Time #59]

c. 13.8 billion BMB/BCE

The Concept of Death

All the mortal beings in the Multiverse will eventually die. However, death is not necessarily the end. After the mortal body has perished, the soul can continue without it. There appear to be two main possibilities: reincarnation, or transportation to one of the Dead Worlds.

In the first option, a person's soul is granted a new body following the death of their previous form. They retain none of their memories, but maintain a tenuous cosmic connection with their past selves. The only beings currently known to reincarnate are unique entities like the Elementals and the Catalyst Comet's Agents of Change. It is not known whether or not "ordinary" beings can ever reincarnate. [The Vault, Jelly Beans Have Power]

During transportation to the Dead Worlds, it is implied that ending up in a higher Dead World is a more desirable outcome. According to Jake the Dog, deceased beings have their deeds tallied after death. This process, if it exists, might be how the deceased are sorted into the Dead Worlds. The highest known Dead World is the Fiftieth, which appears to be the equivalent of Heaven and is probably synonymous with "Glob World". It is not clear whether the Dead Worlds are actual dimensions or a different kind of thing. [The New Frontier, Ghost Princess, The Suitor]

quote Finn, when I die my individual Earth-consciousness is gonna go all over everywhere while Glob tallies my deeds. I'm gonna be all around you; in your nose, and your dreams, and socks. I'll be a part of you in your Earth-mind. It's gonna be great! Jake [The New Frontier]

Also according to Jake, low-level Dead Worlds are the worlds containing ghosts, which are souls without a material counterpart. The low-level Dead Worlds overlap with the material world, meaning ghosts can interact with the living. Deceased beings normally become ghosts when they still have "unfinished business" in the mortal plane. Upon completion of their business, they can move on to a higher Dead World. Ghosts sometimes do not retain memories of their mortal life, and to ascend to a higher Dead World they must discover how they died. [Ghost Princess, Ghost Fly]

Dead Worlds can be briefly visited by "dying" temporarily; for example, by stopping and then restarting your heart. It also seems to be possible for ghosts to "die" a second time; the fate of these souls is unknown. [Ghost Fly]

It's possible that some other dimensions, such as the Land of the Dead and the Spirit World, may also be examples of Dead Worlds. [Death in Bloom, Beyond This Earthly Realm]

non-canon information

According to one account, deceased beings are sorted into one of the fifty Dead Worlds based on the good and bad things they did during their lives, and the way in which they died, which fits with Jake's explanation. They also have another option: they can take physical form as a demon and go to live in the hellish Nightosphere. [Adventure Time #53]

c. 13.8 billion BMB/BCE

The Concept of Magic

quote "What is the Origin of Wizardry? Pour yourself a cold glass of lemonade, sit in a comfy chair, kick your shoes off, lean back, close your eyes, and think. If reality is Mental in nature, analogous to a Cosmic Mind, and if Wizardry is a function of the Imagination, then the Forces of Nature in the Multiverse are akin to the Currents of the Cosmic Imagination. Thus, the Origin of Wizardry is at the Core of Creation, and Wizards can create or destroy as they wish, tapping into the Power of the Cosmic Imagination." Wizards' Enchiridion, ch. 1 [The Enchiridion & Marcy's Super Secret Scrapbook]

According to the Enchiridion, since the Multiverse is maintained by the perceptions of the sentient beings within it, the imagination can actually be used to change the very structure of existence. This practice is most commonly known as "magic" and used almost exclusively by witches and wizards, although others can also learn to manipulate the material world using their mind. [The Enchiridion & Marcy's Super Secret Scrapbook]

quote "However insecure a wizard might be, wizardry is the realm of the Imagination, and even the flabbiest, most flop-sweaty wizard can warp your perceptions enough to make you believe they are fully capable of kicking your butt." Wizards' Enchiridion, ch. 2 [The Enchiridion & Marcy's Super Secret Scrapbook]

Magic most commonly manifests itself in the form of spell-casting, in which magic users recite incantations and channel their imagination through magically charged items in order to produce various effects. They usually have to practice one trick over and over until they are able to consistently perform it, which is why most magic users have a unique but limited arsenal of spells. There are other methods of performing magic as well. For example, Finn the Human has performed magic via meditation and song, and Son of Rap Bear can produce explosions by rapping. [The Enchiridion & Marcy's Super Secret Scrapbook, Still, The Comet, Son of Rap Bear]

According to Betty Grof's MMS theory, all magic users have varying levels of magic, madness, and sadness. These three properties are required in order to reliably perform magic. Therefore, individuals with tragic pasts are more likely to be drawn into the world of wizardry, and other individuals may be driven to madness and sadness if they attempt to pursue magic. The three traits enforce and balance each other. [You Forgot Your Floaties]

There are two perspectives on the concept of magic. Scientists like Princess Bubblegum (who will be introduced later) believe that it exists due to observational quantum effects and is grounded in scientific principles. This does not mean that scientists do not believe in magic; to not believe in magic in a world where it is so obviously abundant would be foolish. Rather, they simply disagree with the idea of calling it magic, since this makes is sound like it is independent from science. This is somewhat justified, since the mystification of magic can often lead to confusion between real magic and exploitative nonsense, especially in gullible people. On the other end of the spectrum, most magicians choose to accept the hand-wavy imagination theory given in books like the Enchiridion, and question it no further than that. Thanks to this blind belief, they are generally far more proficient at performing magic. Neither view is incorrect. [Wizards Only Fools]

c. 13.8 billion BMB/BCE

The Infinite Enchiridion

The Enchiridion, which has already been mentioned a few times, is an ancient tome and one of the most powerful magical artifacts in the Multiverse. Its exact origin is unknown. Due to its contradictory nature, it may not even have a true origin. Over the course of all of history, it is written and enchanted by thousands of wizards. These spells cause it to gain sentience, change with every reading, automatically translate into the reader's native language, and contain prophetic knowledge from the future. The original tome is over eight million pages long. Various abridged copies are eventually produced, all of which retain its magical properties. The tome is split into two books: one for heroes and one for wizards. It teaches heroes how to conduct themselves and best serve their wizard masters, and it teaches wizards how to perform many ancient and secret forms of magic. [The Enchiridion & Marcy's Super Secret Scrapbook]

According to one iteration of one copy of the Enchiridion, every ten thousand years it transports its original author to the Time Room, where they must make a choice. They can either force the Multiverse to reset to how it was ten thousand years ago, or they can allow it to continue into the unknown. The author almost always chooses to have it reset. [The Enchiridion & Marcy's Super Secret Scrapbook]

quote "Since we've done this thousands of times, you may feel this Universe has been played out, so to speak. Every other time, you've decided to go back in time and start over, to that moment in the quarry when you were carving your name and your true love's name into the side of the boulder, when you first conceived of writing The Enchiridion. You were the young Wizard who wrote it, but you've forgotten. When I become sentient enough to tell you, after ten thousand years, I remind you and ask you if you'd like to end it all and let the Unknown occur, or if you'd like to go back again and experience another variation of the last ten thousand years. The Multiverse is unstoppable. Even if it ends, it will sprout back into existence again, but this time in some new, unknown way. Just as it did when all of This began. I'm just asking. It's your decision." Wizards' Enchiridion, ch. 7 [The Enchiridion & Marcy's Super Secret Scrapbook]

It is somewhat unclear how this cycle fits into the rest of the history of the Multiverse.

Placing "Gems of Power" into various slots in the Enchiridion can produce powerful magic spells. Most notably, filling the gem slots in the front cover enables the user to open a portal to any dimension in the Multiverse, and might even allow for time travel. [The Lich, Skyhooks II]

c. 4.5 to 3.5 billion BMB/BCE

Earth, the Nightosphere, and the Elementals

The planets Earth and Mars form in the Earth Dimension around a sentient star called the Sun. Around a billion years later, life begins to emerge on Earth. [Something Big]

A demon named Hunson Abadeer comes into being around this time, and becomes ruler of the Nightosphere, a fiery and hellish dimension. He constructs or obtains the Abadeer Axe. [It Came from the Nightosphere, Return to the Nightosphere]

non-canon information quote "My single earliest memory occurred eons before the Mushroom War. This memory consists of one image: me eating a ham sandwich, perched atop Rock Candy Mountain, overlooking the Sea of Something, long before Plants, Animals, and Actual Things came into existence in the Land of Ooo, surrounded by an all-encompassing Night of Nothingness. Full disclosure: I believe I was a ghost at the time, although it isn't clear how a ghost can sit on a mountain peak or eat a ham sandwich." Hunson Abadeer [The Adventure Time Encyclopaedia] It is not known if Hunson Abadeer was once a living being, or if his soul simply came into existence out of nothing. Even he admits to not knowing his own origin. Once he manifests a physical demon body, he and most other demons end up living in the Nightosphere. He describes the ancient demons as "trepanning fetishists" who attach engraved iron plates to their skulls containing secret knowledge. He claims that he was a carny boss in his youth, going by the name Johnny Corndog. [The Adventure Time Encyclopaedia] His ambitions later grow beyond these humble beginnings. He constructs the Abadeer Axe and successfully uses it to defeat the previous rulers of the Nightosphere, becoming the new Lord of Evil. [Seeing Red] quote "A very, very long time ago, the Nightosphere was a very different place. It was chaotic. Lawless. A real nasty place. That's about when my dad showed up. He got sick of nothing getting done, everybody eating everybody else. These two old, evil globs, they liked things just how they were. My dad had different ideas. He worked old magics for a hundred days and nights - taking snack breaks, obviously - until he made a weapon that could win the Nightosphere." Marceline Abadeer [Seeing Red] Hunson's rule is cruel and tyrannical, but apparently still better than that of his predecessors. [Seeing Red] Later on, Hunson Abadeer and Death begin to compete for the souls of the recently deceased. Hunson tries to encourage them to become demons and join his subjects in the Nightosphere, while Death tries to encourage them to come with him to the Dead Worlds. [Adventure Time #53] At one point the two rivals are both members of the same cover band. Hunson kicks Death out for being a better drummer than him. [The Adventure Time Encyclopaedia]

On Planet Earth exists the concept of five fundamental elements: fire, ice, candy, slime, and lumps (parodying the real-life classical elements of fire, water, earth, air, and aether). Despite the existence of five elements, lumps is less well known and as a result many accounts describe only the first four. [Elemental, Skyhooks II]

quote "Ever since life began on this planet, there have always been embodiments of the four elements: fire, ice, candy, and slime. Across eons and millennia the four Elementals lived, and died, and lived again." Patience St Pim [Elemental]

The Elementals are powerful wizards who live on Earth and each represent one of the aforementioned elements. They possess the power to generate and shape their own element in a variety of ways. Whenever an Elemental dies, their soul is reincarnated into a new body, meaning that there is almost always a living representative for each element at any one time. Like other beings who reincarnate, the Elementals can occasionally make contact with their past lives. [Evergreen, Jelly Beans Have Power]

The fifth element, lumps, behaves as an "anti-element", and also has an associated Elemental to go with it. The Lumps Elemental is capable of undoing the magic of the other four, and can also undo some other types of transfiguration magic. The element is associated with a dimension called Lumpy Space. People from Lumpy Space have been seen far from Planet Earth, suggesting that Lumpy Space is accessible from anywhere in the universe, and perhaps from anywhere in the Multiverse. Furthermore, lumps apparently permeates through the universe, similar to aether, its classical counterpart. [On The Lam, Skyhooks II]

quote "Lumps are the subspace molecular lattice that binds together the scientific and magical forces of Ooo. More powerful than any one element, it's the force that orders reality into its true shape." Lumpy Space Queen [Skyhooks II]

Like all magic users, the power of the Elementals is entirely dependent on the elasticity of the Earth Dimension. For example, Evergreen, who lived millions of years in the past, is capable of constructing an entire castle from ice, whereas the Fire Elemental of the pre-war era struggles to heat a single cup of coffee. [Evergreen, Elemental]

The symbol used to represent the main four elements is a circle divided into quarters. [Jelly Beans Have Power]

non-canon information

According to one account, four cosmic entities each rule over one of the four elements. Zon inhabits the Sun and rules the element of fire, Lun inhabits the Moon and rules the element of ice, Arklothac rules the element of candy, and Ng'zot Aa rules the element of slime. [Adventure Time #59] Zon, Arklothac, and Ng'zot Aa reap the Earth for many years, terrorising the fledgling life that has begun to appear. Lun takes pity on the inhabitants of Earth and decides to take action against the other Elementals. She betrays them and has them locked outside the Earth Dimension so that they can do no further harm. To prevent the evil Elementals from ever returning, Lun sacrifices herself to create the Sword of Lun, a weapon capable of destroying them. Before being used, the sword must await its true bearer, "a warrior who can withstand great bodily loss without injury". [Adventure Time #59 and #61] As a result of this event, the Ice Elemental's betrayal will go on to echo and repeat itself several times through history. [Evergreen, Elemental]

c. 65 million BMB/BCE

Evergreen's Crown and the Green Catalyst Comet

During the time of the dinosaurs, the four Elementals are Urgence Evergreen (ice), Balthus (fire), Chatsberry (candy) and Slimy D (slime). They each rule their respective elemental realm. The Lumps Elemental of this time is never mentioned. Urgence Evergreen the Ice Elemental has a mutated dinosaur servant named Gunther, who vainly hopes to eventually become his master's magical apprentice. [Evergreen]

non-canon information

Gunther briefly meets Finn the Human and Jake the Dog while they are travelling through time after escaping the Vanishing Point. This is chronologically the first of several cameos that Finn and Jake make throughout history during this journey. [Beginning of the End bonus chapter] According to another account, it is around this time that two sentient meteors crash to Earth; a red one named Carl and a blue one named Gemma. They each become compressed into gemstones within two separate volcanoes. The two gemstones are in love, but are trapped under the ground and forced to remain separated for millions of years to come. [Adventure Time #25]

Evergreen spots the impending Green Catalyst Comet and notices that it is far more powerful than those that have come before it. It carries so much power that it would wipe out most of the life on the planet, so Evergreen seeks a way to stop it. He uses his knowledge of technology and magic to construct a golden crown capable of granting its wearer their greatest wish, but it needs a power source: the ruby eyes of the lava dog Magwood. To help battle Magwood and retrieve the eyes, Evergreen summons the other three Elementals to his castle from their realms. They reject his plan, stating that wish magic is too dangerous and reminding him that even if they die, they will be reincarnated. [Evergreen]

quote "Hath not a Comet impacted our world every thousand years with no lasting grievousness? If this Comet hits, we four indeed may perish, but the elements we embody - fire, ice, candy, and slime - will live on. But a misplaced wish could cause irreversible damage to the very structure of existence." Balthus [Evergreen]

Ignoring their advice, Evergreen has them frozen and sets off to take on Magwood alone. His mission is successful and he retrieves the eyes before rushing them back to his castle and completing the crown. However, he is tracked by the blind and enraged Magwood, and just as Evergreen is about to use the completed crown to vanquish the Comet, the lava dog attacks his castle. Evergreen becomes trapped under debris during the following battle and is unable to put on the crown and wish for the Comet's destruction, so instead he orders his dinosaur servant Gunther to do it. But Gunther's greatest desire is not to destroy the Comet. [Evergreen]

quote "Instead of stopping the Comet, Gunther's truest, deepest wish came true. His nose lengthened, white hair grew from his head, and a beard descended from his face as the crown changed Gunther into Evergreen. Snow began swirling within the room. Evergreen was horrified. The Comet had arrived. It was all too late." Wizards' Enchiridion, ch. 5 [The Enchiridion & Marcy's Super Secret Scrapbook]

Gunther's wish becomes permanently associated with the crown, and its wish-granting abilities are disabled. In the future, any individual who wears the crown will become its "host" and turn into Gunther's image of Evergreen: a cruel, mad, and powerful ice elemental. [Holly Jolly Secrets Part II]

The Green Catalyst Comet kills the four Elementals, and is likely to be the event which causes the extinction of the dinosaurs. Gunther is "saved" by the crown; a copy of his original consciousness is held within its complex circuitry. Any future hosts of the crown will be similarly "saved". [Evergreen, Broke His Crown]

It is likely that the Green Comet's Agent of Change is the Lich, an embodiment of evil whose only desire is to extinguish all life. He claims to be "the last scholar of GOLB", although the exact meaning of this is unknown. Since the Multiverse is maintained by the conscious beings within it, the end of life would mean the end of the Multiverse, and reality would return to its initial state of chaos and monsters. This is probably the Lich's ultimate goal. The Lich lies dormant for millennia, awaiting the right opportunity to rise to power. [Finn the Human, Whispers]

c. 200,000 BMB/BCE

Humans and Vampires

The extinction of the dinosaurs allows mammals to dominate the planet, and eventually this leads to the evolution of vampires and humans. According to Hunson Abadeer, vampires exist before the emergence of humans but go into hiding during the Ice Age. [The Enchiridion & Marcy's Super Secret Scrapbook]

quote "When my dad was trying to wise me up to the ways of the world, he told me that the race of vampires were ancient. He said they'd been on Earth before humans, and that when the Ice Age began, they hibernated underground until it was over." Marceline Abadeer [The Enchiridion & Marcy's Super Secret Scrapbook]

Vampires are terrifying humanoid creatures who suck the blood from the necks of other creatures for nourishment, and reproduce by turning their victims into more vampires. However, vampires do not actually feed on blood itself, instead taking their sustenance from the colour red. Most vampires feed on blood anyway, preferring the taste. They remain hidden from the human population for most of human history, only appearing in folklore and fictional stories like Dracula. [Evicted!, Vamps About, Fionna and Cake and Fionna]

Werewolves also seem to be native to Earth, so probably evolved at around this time. Like vampires, they remain hidden from the humans. [The Enchiridion & Marcy's Super Secret Scrapbook]

XXXX BMB/BCE

The First Coming of GOLB and the Yellow Catalyst Comet

Earth is not the only place in the Solar System harbouring life. Long ago, a self-proclaimed utopian society emerges on Mars, consisting of the green-skinned Martian race. It is not clear where they came from, although they have several strong connections with the human race. Their king is Abraham Lincoln, a human from the future, who was presumably somehow transported back in time to become the ruler of Mars. Lincoln's champion is the four-faced Grob Gob Glob Grod, who later becomes entwined in the religious beliefs of the inhabitants of Earth. Grob Gob Glob Grod has a brother named Magic Man, and Magic Man has a wife named Margles. [Sons of Mars]

note

Grob Gob Glob Grod's name is often shortened to "Glob". For simplicity, this website will refer to him as Glob most of the time. Additionally, it is worth clarifying that Glob and GOLB are two completely separate entities and should not be confused.

A human roboticist from the future named Moseph Mastrogiovanni is involved in the design of the Martian colony, as seen in blueprints on his desk, and the human magician Betty Grof claims that Glob's helmet will react to her "ancient human DNA code", further suggesting at an anachronistic connection between humans and Martians. [You Forgot Your Floaties, The More You Moe The Moe You Know Part 2]

non-canon information

According to one account, there was a period of conflict on Mars known as the Martian Independence Era, suggesting that the Martian society emerged following some kind of war of succession. [Marcy & Simon #5]

Mars is attacked by GOLB, the ancient Cosmic Entity embodying chaos, during an event known as the First Coming of GOLB. The entity consumes Margles, the wife of Glob's brother Magic Man, and completely removes her from existence. To prevent GOLB's second coming, Magic Man builds a defence system called the Magical Automated Resistance Generating Laser Energy Supplier (M.A.R.G.L.E.S.) in the image of his late wife, and plans to install it on the peak of the tallest mountain on Mars, Olympus Mons. [You Forgot Your Floaties]

quote "I looked everywhere, you know. Every dimension, every Dead World. I even wished you back in Prismo's Time Room, but you were gone - erased. For hundreds of years I held that sadness until my magic and science were strong enough to create you from my nightmares." Magic Man talking to M.A.R.G.L.E.S. [You Forgot Your Floaties]

Glob worries that Magic Man's grief over the loss of his wife has corrupted his spell programming. Unfortunately, this turns out to be correct, and the new defence system goes insane and has to be deactivated. Magic Man begins to spiral into madness after symbolically losing his wife for a second time. His madness turns to unrelenting cruelty. He uses his magic to become an evil trickster and torments the people of Mars for centuries to come, for nothing more than his own entertainment. [Sons of Mars, You Forgot Your Floaties]

At least a thousand years before 0 AMB, the Yellow Catalyst Comet begins to approach Earth. Orgalorg, one of the monsters from before time, plans to intercept it and absorb its power. Abraham Lincoln sends Glob to vanquish Orgalorg and end his reign of terror. [Orgalorg]

quote "Orgalorg is an ancient Cosmic Entity who ruled the Solar System with his cruel and deadly whims: The Breaker of Worlds. He was seeking ever more power. He desired to intercept a Catalyst Comet and absorb its essence. Thereby did he offend the King of Mars, who decreed that Orgalorg should be cast down. And yes, he was cast down, by the flaming sword of Grob Gob Glob Grod. Orgalorg was banished to an inhospitable planet where he would forget everything. Yea, even forget his identity and from whence he came. And the prophets say that the gravity of the planet did crush and compress Orgalorg into a more powerless and cuddlesome form." Alien Elders [Orgalorg]

The "inhospitable planet" spoken of by the alien elders is actually Earth. Orgalorg is compressed into the form of an immortal penguin, his memories and identity suppressed into the deepest depths of his mind. He becomes a hunter-gatherer alongside early humans. [Orgalorg]

Meanwhile, the Yellow Catalyst Comet strikes the Earth and leaves behind its Agent of Change. Given the colour scheme, it's possible that this Agent of Change will eventually be reincarnated as Jake the Dog, although this has not been confirmed.

non-canon information

Finn and Jake witness both the installation of M.A.R.G.L.E.S. and the battle between Orgalorg and Glob while they are travelling through time after escaping the Vanishing Point. [Beginning of the End bonus chapter]

note

Glob still had his hair during the First Coming of GOLB, but during his battle against Orgalorg he is wearing his headgear. Since Glob wears his headgear to hide his baldness, this suggests that the arrival of the Yellow Catalyst Comet came after the First Coming of GOLB. However, this is not confirmed; the arrival of the Yellow Comet could have come first.

At some point, Abraham Lincoln meets Hunson Abadeer. [Return to the Nightosphere]

XXXX BMB/BCE

Other Worlds

Aside from Earth and Mars, a multitude of other planets in and around the Solar System become inhabited during the universe's long history. Eventually, interstellar travel becomes widespread enough that many of the galaxy's species are able to visit one another, forming the backbone of an interstellar community. As far as we know, the humans on Earth never achieve contact with their alien neighbours. [On The Lam]

The structure of the Solar System in Adventure Time's reality has a few differences compared to its structure in real life. Mars has a large purple moon, there is an unnamed red planet with a ring system, and there is an object resembling a black hole. No other real life planets have ever been seen or mentioned. Models and drawings of a planetary system have been seen, but they are completely unrecognisable. [Distant Lands: BMO, The New Frontier]

The home planet of the siblings Cuber and Tuber appears to be a fairly Earth-like world. Their people invent the "graybles"; short thematically-linked stories depicting historical scenes, used to teach morals and practical skills or simply for entertainment. [Graybles 1000+]

Many of the planets once terrorised by Orgalorg before his defeat at the hands of Glob are home to a range of unique lifeforms. [Orgalorg]

The planet of the koala people appears to be a desert world where food and water is scarce but gold is plentiful. The planet falls under the oppressive regime of a group of greedy humanoid lizards, leading to the emergence of a group of koala rebels who have been fighting for their freedom ever since. Many other alien species are also present on this planet. [On The Lam]

The home planet of the greys is abandoned by its native inhabitants at some point. Some of the greys will eventually settle on Earth. A round trip from Earth to this planet and then back takes at least forty years. [High Strangeness, Come Along With Me Part 1]

The Drift is an ancient space station inhabited by many different species, including shell people, bunny people, and members of Cuber's species. The station is comprised of various pods, which each contain a certain biome suited to a specific set of species. [Distant Lands: BMO]

Nerraw is a small world orbited by an even smaller black hole. It is inhabited by a powerful shape-shifter named Warren Ampersand, who wishes to be immortal. He creates a plan to drain the youth from his own children so that he can live forever. Every generation, he impregnates a chosen host so that their offspring inherit his powers. Later in his children's lives, he lures them to Nerraw where he tricks them into shape-shifting while wearing a special belt which drains their power and gives it to him. Warren uses his shape-shifting powers to fabricate an entire society and culture for Nerraw, as part of the deception. [Jake the Starchild]

quote "I was dying. I needed to siphon your precious stretchy essence to keep me young and virile. I use these belts as a conduit. The more you stretch the stronger I grow. I've done it hundreds of times, to hundreds of sons." Warren Ampersand [Jake the Starchild]

He continues this sick trickery for many generations, exploiting and then outliving each child in succession. One of his future sons will be Jake the Dog. [Jake the Starchild]

non-canon information

A collection of asteroids are inhabited by two species named the leaflan and the tuffbones. The asteroids appear to be part of Earth's solar system because Princess Bubblegum can see them through a telescope and reach them using a conventional rocket from Earth. [Marceline Gone Adrift #2]

XXXX BMB/BCE

The Rainicorn-Dog Wars

A dimension called the Crystal Dimension is mainly inhabited by two species: the Korean-speaking magical rainbow-unicorn creatures known as "rainicorns", and a race of intelligent talking dogs. For unknown reasons, the two species become each other's enemies, eventually leading to the outbreak of the millennia-long Rainicorn-Dog Wars. Not much is known about how the wars play out, nor who wins, although it seems to involve one or both sides engaging in aerial flying saucer combat. [Her Parents]

quote "For thousands of years rainicorns battled dogs for territory in the Crystal Dimension." Jake [Her Parents]

This extremely long time scale could be an exaggeration on Jake's part. The wars might only have gone on for a few years or even less.

non-canon information

Finn and Jake briefly witness a battle from the Rainicorn-Dog Wars while travelling through time after escaping the Vanishing Point. The dogs are seen to battle using ray guns, while the rainicorns attack using energy blasts from their horns. [Beginning of the End bonus chapter]

All of rainicorn history is documented in a huge book called the Rainicornicopia. [Paper Pete]

c. 4500 to 400 BMB (2500 BCE to 1600 CE)

Orgalorg Through Ancient History

The penguin form of Orgalorg appears in some hieroglyphic artwork from the time of the Ancient Egyptians, implying that he joined their society. The Egyptians construct the pyramids. As humans continue to develop and thrive, the elasticity of the Earth Dimension settles into a more rigid pattern, bringing about the end of magic. For now. [Orgalorg, Daddy-Daughter Card Wars, The Enchiridion & Marcy's Super Secret Scrapbook]

non-canon information

A race of magical rock people live on Earth. After magic fades from the world, they are banished by early humans, and live in subterranean lairs for the next few thousand years, eventually coming to call themselves "The Underground". [Adventure Time Comics #20: "Cavities"]

During the height of the Roman Empire, the penguin form of Orgalorg is a gladiator and a chariot racer in Ancient Rome, and is depicted in some pottery from the time. [Orgalorg]

The legend of the Dual Swords takes place during the time of the Ancient Romans:

quote "Legend tells of two mighty gladiators, as bonded to each other in friendship as two sides of a coin, who were made to fight a death match by their wicked emperor. When one of the Heroes' swords was unexpectedly stolen by a flying serpent who liked shiny things, the other Hero split his own sword in half, and the two gladiators each fell on one half in defiance of the cruel emperor's order. Throughout the centuries, the Dual Swords have been separated many times by merchants, curio collectors, and thieves, but they always seem to find their way back together." Heroes' Enchiridion, ch. 3 [The Enchiridion & Marcy's Super Secret Scrapbook]

Thousands of years later, the Dual Swords will end up back together in the arena of the Fight King, who is likely an immortalised version of the evil emperor. [Morituri Te Salutamus]

During the middle ages, Orgalorg joins some kind of hooded organisation: possibly a monastery or a secret society. During the renaissance, he lives in Britain and appears alongside nobility. [Orgalorg]

c. 1670 to 20 BMB (340 to 1990 CE)

The Journey of Evergreen's Crown

In Ancient Greece, Saint Nicholas comes into possession of Evergreen's crown and wears it. Like the dinosaur Gunther, the original Santa's consciousness becomes stored in the circuitry of the crown. He briefly gains the powers of the Ice Elemental, which could be the cause of Santa Claus' later association with snow and ice. It is unknown whether he is able to overcome the crown or if he succumbs to it until it finds its next host. [Broke His Crown]

quote "Says he's the first 'Santa'. Like, what's even a 'Santa'?" Gunther's consciousness [Broke His Crown]

Likewise, the consciousness of an Icelandic boy named Sveinn becomes stored in the crown's circuitry after wearing it just once. The fact that he wore it so briefly suggests either that he is able to overcome its influence or that he dies not long after wearing it. [Broke His Crown]

quote "That's Sveinn. He only wore the crown once." Gunther's consciousness [Broke His Crown]

The crown remains in Northern Europe, and by around 20 BMB it has come into the possession of an unidentified Scandinavian dockworker. [Holly Jolly Secrets Part II]

145 BMB (1865 CE)

The Assassination of Abraham Lincoln

Despite taking a fatal gunshot to the head, Abraham Lincoln manages to make some kind of deal with Death, bribing him with a penny. Instead of being killed, he becomes immortal and travels back to ancient times, where he becomes the deific King of Mars and rules the Martian colony. On Mars, Abraham Lincoln is prophesied to someday meet Jake the Dog. [Sons of Mars]

quote "Look! It's the dog. The one you were prophesied to meet!" Grob Gob Glob Grod [Sons of Mars]

c. 100 BMB to 0 AMB (1910 to 2010 CE)

The Further Adventures of Orgalorg

Sometime around the dawn of the twentieth century, the penguin form of Orgalorg opens a drinks manufacturing company called "Gunto's" and becomes fairly wealthy thanks to its success. He owns a car (closely resembling a Ford Model T) and probably still lives in Britain. It seems unlikely that an immortal penguin god would be able to adapt and blend in so well with modern society, but somehow Orgalorg manages to do so without raising too many eyebrows. [Orgalorg]

During the First World War, he becomes a fighter pilot for the British Royal Air Force and flies a biplane resembling a Sopwith Camel, which entered service in 1917 CE (93 BMB). It is unknown whether or not Orgalorg has any involvement in the Second World War, but at some point he becomes a movie director. By the seventies, he has moved to the United States where he joins the counter-cultural movement. [Orgalorg]

non-canon information

According to one account, human space travel develops significantly faster than it does in real life history, to the point where humanity constructs a large functional base on the Moon prior to 0 AMB. [Adventure Time #60] Despite his comfortable integration into human society, Orgalorg somehow realises that he is something more than just an immortal penguin. Since it was the gravity of the planet Earth which compressed him into his current weak form, he recognises that he must attempt to escape into space so that he can take his true form. Meanwhile, a man named Davey Johnson works a desk job at a space agency. He is apparently a reincarnation of the Blue Catalyst Comet's Agent of Change, but the Blue Catalyst Comet probably hasn't struck by this point, so this might be false. He is offered the chance to go to space but declines, and thanks to this decision he spots Orgalorg trying to steal the rocket and has him apprehended. [Adventure Time #50]

Shortly before 0 AMB, a Mars rover (resembling the real life Mars rovers Opportunity and Spirit) discovers evidence of the Martian civilisation. It's possible that humanity was on the brink of making contact with Mars at this time. [Sons of Mars title card]

45 BMB to 0 AMB (1965 to 2010 CE)

Simon and Betty

In the Earth Dimension, magic has mostly died out by modern times, with the great heroes and wizards of old becoming nothing but myths and legends. However, there still seems to be a vague awareness of the existence of magic and it is suggested that a significant number of humans still believe it is real. [Holly Jolly Secrets Part II]

quote "Now, I never believed in the supernatural stuff myself - just had a fascination with superstitions." Simon Petrikov [Holly Jolly Secrets Part II]

A human named Simon Petrikov is born in 45 BMB (1965 CE) to unknown parents. Another human named Betty Grof is born around the same time. [Simon & Marcy]

non-canon information

According to one account, Simon is raised by his unnamed mother. [Adventure Time Comics #16: "Broken"]

Simon and Betty both become post-graduate antiquarians studying ancient artifacts and their relation to magic at the University of Petrograd in Russia. They meet each other just before Betty was due to leave on a six month trip to study petroglyphs in the Australian outback. She cancels the trip and becomes infatuated with Simon and his work. [The Enchiridion & Marcy's Super Secret Scrapbook, Temple of Mars]

quote "I never took that trip. I met Simon the next day and he was just so... amazing. I put everything on hold to help him search for the Enchiridion." Betty Grof [Temple of Mars]

quote "Remember how we first met, when we both reached for the same book in the library, and I said you should check it out first, and when you returned it you left a note inside because you knew I'd borrow it next? It was the funniest, smartest note I've ever read." Simon Petrikov's consciousness [Broke His Crown]

non-canon information

According to one account, Simon and Betty met in June when Betty was twenty-five years old. Assuming Betty was born around the same time as Simon, this would mean they met in about 20 BMB (1990 CE). [Adventure Time/Regular Show #4] According to another account, Simon and Betty's first date was a trip to a skating rink. [Adventure Time #19]

Betty eventually becomes Simon's fiancée and they co-author a book called Mystic Rituals and their Space Time Applications. This book contains numerous rituals taken from ancient records, from before the disappearance of magic. These rituals include instructions for entering the Nightosphere and instructions for opening a portal through time, although they cannot be performed in the present day and Simon remains sceptical that they were ever real. [Betty, The Enchiridion & Marcy's Super Secret Scrapbook]

Simon's research into the arcane also leads him to discover the existence of GOLB, but he is hospitalised after Betty tries to throw him a jar of cherries and he doesn't get any further research done on the subject. [Come Along With Me Part 3]

quote "Look Betty, I keep seeing reference to this mysterious entity that embodies chaos. His presence is felt in every crevice where chaos lurks. Imagine if we could somehow harness all that dank energy." Simon Petrikov [Come Along With Me Part 3]

Following that, Simon discovers two major artifacts on his expeditions which challenge his previously sceptical outlook on magic. The first is Evergreen's crown, which he purchases from the old dockworker in Northern Scandinavia. [Holly Jolly Secrets Part II]

The second artifact is a copy of the Enchiridion, which he discovers with help from Betty. [Temple of Mars]

quote "On my recent expedition to Islamabad, in a secret vault in the Hindu Kush Mountains, I discovered an incredible artifact - an ancient book known as "The Enchiridion". Laboratory analysis of the paper and ink indicates some of the pages in the second half of the book pre-date recorded history and are composed of plant DNA unknown on Earth." Simon Petrikov [The Enchiridion & Marcy's Super Secret Scrapbook]

After returning home from these expeditions, he presents his findings at the Museum of History, but the discoveries receive little recognition. A journalist named Bruce Guese writes a demeaning newspaper article about Simon. [I Remember You]

Simon returns to Betty and shows her the crown. Not knowing its true power, he places it on his head as a joke. Suddenly, his head is filled with "secrets of the ice and snow" as the crown continues to fulfil Gunther's wish from all those millions of years ago, to be like his cruel master Evergreen. Simon becomes a host of the crown, and his transformation into a mad ice wizard begins. [Holly Jolly Secrets Part II]

He chases the terrified Betty through the streets, shouting for his "princess" and firing icy blasts from his hands. While Betty is hiding around a corner, a portal suddenly appears beside her and a version of Simon from a thousand years in the future speaks to her through it. Simon tells her that she disappeared after he wore the crown, and, realising why, she jumps through the portal and joins him in the future. [Betty]

Following Betty's mysterious disappearance, the present day Simon begins to lose his sanity as he slowly succumbs to the crown. He records tapes documenting his physical and mental transformation. [Holly Jolly Secrets Part II]

quote "The visions. I fought with them. Shouted at them until I realised it wasn't real, it was the crown... Since then, I see the visions always, whether or not I wear the crown. They tell me the secrets - the secrets of the ice and snow - that the power of the crown will save me with its frost. I don't yet know what this means. As you can see, my skin is beginning to turn blue. My body temperature has been lowering at a supernatural rate, to what is now about 30°C. I don't know when it will end. I'm really scared." Simon Petrikov [Holly Jolly Secrets Part II]

note

In Holly Jolly Secrets Part II, Simon states that when he took off the crown he saw Betty "staring at him with such contempt". However, in the episode Betty it is shown that Betty escaped to the future while Simon was still wearing the crown. It's possible he wore the crown once and then for some reason put it on a second time before Betty left.

Like with its other hosts, the crown stores a copy of Simon's consciousness in its circuitry. [Broke His Crown]

5 BMB to 0 AMB (2005 to 2010 CE)

The Early Life of Marceline Abadeer

Marceline Abadeer is a half-demon half-human hybrid, born in 5 BMB (2005 CE). Her father is none other than Hunson Abadeer, the demonic ruler of the Nightosphere, and her mother is an unnamed human from Earth. It is not known how this unlikely relationship arose. [Everything Stays]

quote "Then he said 'fine'. And that's the story of how I met your dad." Marceline's mother [Everything Stays]

Marceline is raised by her mother on Earth. For some reason, Marceline retains almost no memory of the first five years of her life. She and her mother live in a mobile home, and at some point they go on a trip to the beach. Marceline keeps photographs from this trip on a USB drive, but the drive gets corrupted and over time she forgets what was on it. [Everything Stays, Ketchup]

It is not clear exactly how involved Hunson is in his daughter's childhood. In her scrapbook, Marceline says that she didn't know anything about him until they met later in her life, but pictures of her as a child can be seen in his castle in the Nightosphere, suggesting her parents maintain some form of contact. But for the most part, it seems like Hunson was an absent parent. [Return to the Nightosphere, The Enchiridion & Marcy's Super Secret Scrapbook]

quote "Look kid, I want you to know I didn't abandon you. You have no idea how hard it was to let you go. Times were tough - even you know that. Your world was ending, and my world devolves into lawlessness when I'm not there." Hunson Abadeer [The Enchiridion & Marcy's Super Secret Scrapbook]

non-canon information

Some accounts suggest that Marceline grew up with her father and was a vampire from birth. This is false. [The Adventure Time Encyclopaedia, Seeing Red]

One of the few things that Marceline does remember from her early childhood is the theme song for a soda company called "Super Porp", who produce a fizzy grape drink. [Dark Purple]

28 BMB to 0 AMB (1982 to 2010 CE)

Prelude to the War

At some point before 2 BMB (2008 CE), a roboticist named Moseph Mastrogiovanni, or just "Moe" for short, establishes a company called MO Co. They produce a wide range of robots for various purposes. As Moe ages, he begins to replace parts of himself with cybernetics to extend his life, becoming a cyborg. Another roboticist named Hugo is a contemporary of Moe. His robots have been described as "janky off-brand cousins" of MO Co models. [Be More, Distant Lands: BMO]

After the death of an unknown previous Elemental, the Ice Elemental is reborn as an individual named Patience St Pim in 28 BMB (1982 CE). She and the other Elementals of the modern generation discover their powers and eventually find one another, although their powers are very weak due to the rigidity of the Earth Dimension at this time. [Elemental]

non-canon information

By this time, Patience is already making plans for an "elemental purification spell" which she plans to use to re-establish the four Elemental Realms of ancient times. She briefly meets Finn and Jake on the streets of a city while they are travelling through time after escaping the Vanishing Point, and rants to them about her plan. [Beginning of the End bonus chapter] quote "Purity, that's the key! The purity of the elements! I can smell the magic humming off you two, but in this era there's hardly a whisper of the stuff! I need to get myself to some other time, where the magic has more juice! More grit!" Patience St Pim [Beginning of the End bonus chapter]

The Elementals meet up every once in a while for coffee. Despite the weakness of their magic, they begin to see visions of an impending cataclysm. Like Evergreen millions of years before her, Patience St Pim seeks a way to survive it, but the other Elementals disagree. Ignoring their objections, she freezes herself underwater and waits out the approaching disaster. [Elemental]

quote "So I went out alone and froze myself. And all of you bit it." Patience St Pim [Elemental]

Shortly after this, the rest of the world begins to realise that war is on its way. At some point, Simon moves to the United States. He mentions that an "international crisis" is developing in some of his notes in the Enchiridion. The next day, he sends the Enchiridion to the Scandinavian Institute of Technology Museum. [The Enchiridion & Marcy's Super Secret Scrapbook]

quote "I won't give up the crown but I should send the book to the museum tomorrow. If this international crisis gets any worse, they might cancel shipping flights to Scandinavia." Simon Petrikov [The Enchiridion & Marcy's Super Secret Scrapbook]

0 AMB (2010 CE)

The Great Mushroom War and the Blue Catalyst Comet

After a quick escalation, the world erupts into global war. The US Air Force insignia is seen on a crashed bomber, suggesting that the United States is involved. A red star insignia is also seen on an abandoned troop transport. Both sides make full use of nuclear weaponry. [Betty, Simon & Marcy]

The Great Mushroom War earns its name from the mushroom clouds produced by the nuclear bombs, which reduce most of human civilisation to ashes. One of the biggest is the "Mushroom Bomb", which is powered by something else besides its nuclear payload. It tears at the fabric of reality and massively increases the Earth Dimension's elasticity, delivering magic back into the world. It's possible that the whole thing is orchestrated by the Lich, since the bomb releases his spirit and allows him to rise from his dormancy. During the war, some kind of energy weapon rips a huge chunk from the face of the Eartha huge chunk is ripped from the face of the Earth, leaving a crater about the size of the Moon. [Finn the Human, Crossover, Distant Lands: BMO]

Despite the near extinction of the human race, there are several survivors.

The antiquarian Simon Petrikov is protected by Evergreen's Crown. [The Enchiridion & Marcy's Super Secret Scrapbook]

Marceline Abadeer survives thanks to her half-demon physiology, but her mother presumably doesn't make it. Marceline is seen watching a city burn to the ground. [The Enchiridion & Marcy's Super Secret Scrapbook, Come Along With Me Part 1]

Moseph "Moe" Mastrogiovanni, the owner of the robotics company MO Co, survives thanks to his mostly cybernetic body. [Be More]

The Ice Elemental Patience St Pim survives because she is frozen deep underwater, although the other Elementals perish. [Elemental]

The antiquarian Betty Grof has escaped through a portal to 999 AMB, skipping the war. [Betty]

Many native werewolves and vampires survive. [The Enchiridion & Marcy's Super Secret Scrapbook]

The penguin form of Orgalorg survives thanks to his true nature as a cosmic entity. [Orgalorg]

A group of humans led by Hugo, along with his robotic companion CGO, escape into space on a rocket ship. [Distant Lands: BMO]

Several tribes of humans survive on Earth. These are presumably those who were far enough away from the blasts and somehow managed to avoid the radiation. [Islands graphic novel, Everything Stays, 2015 Spoooktacular]

non-canon information

According to one account, Marceline stays safe by hiding in a cave while the bombs are going off outside. [Adventure Time #4] According to another account, a programmer named Randall N. Byron, AKA "Kewlboy", survives the war by uploading his consciousness into a video game mod. His mod merges with a virus called the Omega Algorithm, which was developed by the military, and he proliferates through many of Earth's decaying computer systems following the war. He ends up infecting a copy of the video game Super Guts Punch 3. [Adventure Time #13] note

In Adventure Time #13, it is stated that the war took place 1002 years before season 5. However, doing the relevant maths with this date would put the episode Simon & Marcy six years after the war, which doesn't make sense. It would also cause the comet to hit four years after the war, which messes up a lot of dates. Therefore, this date has been disregarded.

quote "Hugo had a big brain and a rocket, and led an exodus to the stars, on the cheap." CGO [Distant Lands: BMO] Something goes wrong with Hugo's rocket ship, but they are rescued by a passing group of greys. To survive in space, Hugo uses "bio-hacking" to merge the DNA of the greys with that of the human escapees, creating a new race of ageless human hybrids: the grey elves. The process proves fatal to the greys who participate. With the greys' spacecraft failing, the grey elves are rescued for the second time by a service droid from the Drift, the mysterious ancient space station which is home to many different species. Hugo establishes himself as a chief scientist and corporate leader on board the Drift. [Distant Lands: BMO]

Due to the increased elasticity of the Earth Dimension and the reintroduction of magic following the detonation of the Mushroom Bomb, the world begins to change very rapidly. Hybrid creatures are able to be born, and a variety of extra-dimensional creatures begin to flood in through portals. Rainicorns enter the world and begin a tradition of hunting and eating the surviving humans, who become their main source of food. Rainicorns are able to live off the sparse population thanks to the fact that they are capable of absorbing massive amounts of sustenance from a small amount of meat. [Her Parents, Lady Rainicorn of the Crystal Dimension]

quote "There's enough nutrition in that macramé owl on the wall there to feed this entire city for a year!" Lee [Lady Rainicorn of the Crystal Dimension]

A group of vampires known as the Vampire Court comes out of hiding and also begins hunting humans. The court consists of five powerful vampires: the Fool, the Empress, the Moon, the Hierophant, and the King. Many survivors are turned into mindless vampire minions who serve the higher members of the court. [Everything Stays, Vamps About]

On top of all this, many humans become mutated by a mixture of radiation and magic, creating a race of mindless zombies which will later become known as oozers. Some zombified businessmen become preserved in an iceberg. [Business Time, Simon & Marcy]

Remarkably, some companies continue to operate following the end of the world. The Super Porp soda company has fully automated staff recruitment and customer delivery systems, so production and commerce continues as before, with various non-humans taking the place of the dead human employees. MO Co also persists into the post-apocalyptic world thanks to automation and the survival of its owner, although the factory floor is eventually shut down. A company that produces a weekly magazine named "Ble" may have originated from before the war. Production mysteriously ceases some time before 500 AMB, leaving the employees' skeletons to gather dust at their desks. A Pudding Troll is hired in about 500 AMB to guard the offices, even though there is nothing left to protect. [Dark Purple, Be More, Blenanas]

Some of the movies, books, television shows, and music from before the Great Mushroom War will manage to survive into the post-apocalyptic world. [The Eyes, Go With Me, Video Makers, Heat Signature, BMO Noire, Simon & Marcy, Another Five More Short Graybles, Bad Timing, Mama Said, Everything Stays, The Music Hole, Hero Heart, Distant Lands: BMO]

During or shortly after the end of the Great Mushroom War, the Blue Catalyst Comet strikes the Earth and leaves behind its Agent of Change, which initially takes the form of a butterfly. The butterfly will eventually be reincarnated as Finn the Human. [The Comet]

quote "A long time ago, I was you sorta. And I crashed on Earth and became a butterfly or some biz. And I guess it was just some random absurd thing. Just a joke I've been playing out for centuries." Finn talking to the Catalyst Comet [The Comet]

note

The Blue Comet is probably the one that hits following the war because an object closely resembling it is seen missing the alternate version of Earth in Finn the Human. Also, Finn says "centuries" in the above quote, perhaps implying that it has been less than a millennium since his Comet's arrival.

note

Estimates for the real-life date of the war have varied anywhere from the 1970s to the 2040s, based on different sets of evidence. Personally, I believe the war took place sometime between 2007 and 2010 due to the lunar eclipse seen in the episode Ketchup and Marceline's age at that time. See this Tumblr post on the topic for a more detailed explanation. Adventure Time also began airing in early 2010, which is a neat detail. There is further evidence to support this time frame. A chart from High Strangeness appears to show world population over time. A massive dip is seen shortly after the year 2000, and the peak is just over six billion people, which was the approximate world population in that decade. The penny that Abraham Lincoln holds up when trying to bribe Death in Sons of Mars was minted in the year 20XX. The last two digits are obscured by dirt. Many characters use text speak like "BRB" and "OMG", which didn't become prevalent until the mid-2000s. The businessmen and Patience St Pim both have keypad mobile phones when they are thawed in Business Time and Elemental. Background artist Ghostshrimp stated in his podcast (Ghostshrimp & Friends 049) that he believes the Mushroom War is set in the crew's collective pasts, because that's what most of the creative input for the war is based on, without any set date in mind; hence the VHS tapes in his backgrounds, and the theme song from Cheers which was one of Kent Osborne's favourite shows. He accuses fans of being over-analytical. Personally, I have no idea what he's talking about. As previously discussed in the introduction, this timeline sets the Mushroom War to take place in 2010 CE for the purposes of assigning real life dates.

0 AMB (2010 CE)

In the Aftermath

quote "Today I was starting my scientific journal on the aftermath of the massive worldwide destruction. The mutagenic horrors. The glowing rainstorms. The waves of toxicity in the atmosphere. Those glowing particles that ride the air currents and blow through the ruined cities at night like fireflies. I was going to start writing about it - but, instead, I found a child." Simon Petrikov [The Enchiridion & Marcy's Super Secret Scrapbook]

While exploring the ruins of a city on the West Coast of what used to be the United States, Simon Petrikov comes across the five year old Marceline Abadeer. Simon is quite far into his transformation into an Ice Elemental by this point, with blue skin and lengthening white hair. Marceline appears to have been left alone by her mother, who left a note for anyone who might find her. [I Remember You, The Enchiridion & Marcy's Super Secret Scrapbook]

quote "Whoever finds Marceline please care for her. Her father is Hunson Abadeer. When she is old enough she will find her way back. Please keep my baby safe. I can't care for her. Please help." Marceline's mother [The Enchiridion & Marcy's Super Secret Scrapbook]

Simon takes Marceline into his care and keeps the note, hoping he can use it to find Marceline's mysterious father. He gives Marceline a teddy bear from the smashed display of a nearby toy store, which she names Hambo. It becomes one of her most treasured possessions. [Memory of a Memory, I Remember You, Sky Witch]

In his diary, Simon describes a sentient mist that corrupts and mutates any survivors who are exposed to it and "hangs low like a London fog"; possibly an early formation of the Lich. He says that the dying survivors do not trust him due to his immunity, which is probably thanks to the crown. He also mentions that the sky lit up again, which could be a reference to the arrival of the Blue Catalyst Comet. [Friends Forever]

Some survivors set up a refugee camp in an underground mall. [The Enchiridion & Marcy's Super Secret Scrapbook]

quote "When this whole worldwide war started, I guess some of the survivors set up the mall as a makeshift refugee camp, a sort of biosphere. Simon took me there a few times when he first found me." Marceline [The Enchiridion & Marcy's Super Secret Scrapbook]

note

Simon implies that Marceline is the first person he found, but his diary from Friends Forever and the fact that he knew about the refugee camp in the mall suggest that he met other survivors.

At some point, some wizards steal the Enchiridion from the Scandinavian Institute of Technology and bring it back to America. [The Enchiridion & Marcy's Super Secret Scrapbook]

2 AMB (2012 CE)

Weekly Records in the Wreckage of the World

Two years after they first met, Simon and Marceline have begun to settle into their post-apocalyptic lifestyle. Simon becomes a father figure to Marceline in a way that her real father had never been. He gives Marceline a rudimentary education despite the fact that his mental state continues to deteriorate. They both practice kung fu using books they find, as a way to combat anything that might try to harm them. Simon begins writing a journal called Weekly Records in the Wreckage of the World. [The Enchiridion & Marcy's Super Secret Scrapbook]

One day, the two venture into an abandoned city to try to find "chicken soup" to cure Marceline's fever. They have their first encounter with undead creatures while looting an abandoned store, and Marceline names them "oozers" because of the thick green liquid that oozes from their orifices. They get pursued and cornered by oozers and Simon is forced to use the crown for self-defence, using his powerful ice magic to defeat them. However, it further transforms him and his descent into madness accelerates. Marceline is seven years old at this point and Simon is forty-seven. [Simon & Marcy, The Enchiridion & Marcy's Super Secret Scrapbook]

note

"Chicken soup" might be Simon's word for medicine which he uses to make Marceline feel less worried, which would explain why the "food truck" they find resembles an ambulance. Because of this, Marceline might have false memories making her believe that the medicine was actually chicken soup.

At around the same time, a strange pink substance begins materialising across the ruins. This substance is a collective consciousness called the Mother Gum. It is not known whether the Mother Gum formed on Earth or came from a different dimension, but it begins assisting Simon and Marceline. [Simon & Marcy, Bonnie and Neddy]

quote "There's a lot more of that pink substance growing and expanding in blobs and chunks all over the cityscape. A part of it seemed alive, seemed to look at me. How could a pink blob help us? How could this lifeless material know I needed help?" Simon Petrikov [The Enchiridion & Marcy's Super Secret Scrapbook]

Shortly after this, Marceline and Simon move into an abandoned penthouse apartment and see ghosts for the first time. It is possible that a low level Dead World briefly intersected with the material plane, and these ghosts were victims of the Great Mushroom War. It is also possible that this is when Simon begins to develop his "wizard eyes" which enable him to see into a dimension called the Spirit World. [The Enchiridion & Marcy's Super Secret Scrapbook, Beyond this Earthly Realm]

quote "Centuries from now, after the Great Mushroom War, many resources will be gone forever, and the world will regenerate anew with a wholly novel configuration of life-forms. And while wars create a dearth of resources, they also create an excess supply of ghosts. Thus, ghosts, a rarity in the ancient annals of Third Orb, shall become plentiful." Heroes' Enchiridion, ch. 8 [The Enchiridion & Marcy's Super Secret Scrapbook]

non-canon information

Finn and Jake come across Simon and Marceline while they are travelling through time after escaping the Vanishing Point. They tell Marceline to look after an object called the Time Amulet for them so she can give it to them in the future and complete the resulting causal loop. [Beginning of the End bonus chapter]

5 AMB (2015 CE)

The Demon and the Tidal Wave

quote "We ended up in a bunch of tight jams, Marcy and me. I had to protect us from all kinds of marauding creatures and I had to put on the crown a couple dozen times over the past three years and it has taken its toll." Simon Petrikov [The Enchiridion & Marcy's Super Secret Scrapbook]

After realising that he is not going to be able to look after Marceline for much longer due to his rapidly declining mental health, Simon seeks a way to contact her father, Hunson Abadeer. He happens to come across a demon from the Nightosphere, who tells him that he was one of the creatures pulled through a portal to Earth following the war, and that his home dimension is the Nightosphere. Simon realises that this is where Marceline's demon half must originate from. He pledges to find her father before he completely loses his mind. [The Enchiridion & Marcy's Super Secret Scrapbook]

quote "I know I can control myself for a while longer but soon, weeks or months or years from now, when I finally lose it, I'll need someone to take care of her when I'm gone. For now I can still be responsible and protect her but when it happens, I'll be ready to do what I have to do. God help me." Simon Petrikov [The Enchiridion & Marcy's Super Secret Scrapbook]

Simon's condition becomes so bad that he is hardly able to remember and write about the day's events, so Marceline takes over writing Weekly Records in the Wreckage of the World, and renames it to Marcy's Super Secret Scrapbook. She is ten years old at this point, and Simon is fifty. [The Enchiridion & Marcy's Super Secret Scrapbook]

Even though he stops writing the journal, Simon scribbles many of his thoughts onto any bits of paper he can find. Some of them are notes to Marceline which she won't get to read for a millennium to come. [I Remember You]

quote "Marceline. Is it just you and me in the wreckage of the world? That must be so confusing for a little girl." Simon Petrikov, in his notes to Marceline [I Remember You]

Shortly after this, an enormous tidal wave hits the city. The detonation of the Mushroom Bomb, the impact of the Catalyst Comet, or the general elasticity of the world could all be responsible. Simon and Marceline slowly and purposefully make their way to higher and higher ground, and for a while Marceline seems to enjoy the relative simplicity of her life. The need to keep moving and stay with Marceline seems to help Simon remain sane for a little while longer. [The Enchiridion & Marcy's Super Secret Scrapbook]

quote "If we had stayed in the city we'd be dead. Simon was acting so crazy, I thought he was making it all up. But he made us climb higher and higher into the mountains." Marceline [The Enchiridion & Marcy's Super Secret Scrapbook]

c. 8 AMB (2018 CE)

Simon's Departure

Eventually the water stops rising, and Simon and Marceline arrive in another ruined city. [Everything Stays]

Ever since he first put it on, the crown has been urging Simon to re-establish Evergreen's realm of ice. This urge has begun to endanger Marceline, so he finally decides he must leave her. But before he does, he finds a copy of Mystic Rituals and their Space Time Applications, the book he co-authored with Betty Grof. The rituals it documents, which were useless before the war, are now working magical spells. One of the rituals can be used to open a portal to the Nightosphere. And so at last, Simon is able to contact Marceline's father: Hunson Abadeer. [The Enchiridion & Marcy's Super Secret Scrapbook]

quote "It was all there in the book, and even though I was losing my mind, I did it, Marceline! I completed the ritual! The portal actually opened! A rip between dimensions appeared. I saw Hunson and he saw me, each of us watching the other through a weird rip in the barrier that separates our two worlds. After I completed the binding spell on your dad the portal closed and everything went dark. God knows what I did. All I know is that I left you on my sled, headed north, where I will establish my kingdom, as in ancient times Gunther!" Simon Petrikov, in his note to Marceline [The Enchiridion & Marcy's Super Secret Scrapbook]

The "binding spell" cast by Simon presumably ensures that Hunson and Marceline will someday meet each other. [The Enchiridion & Marcy's Super Secret Scrapbook]

non-canon information

Hunson and Simon briefly talk during their encounter, and Simon tells Hunson that the note left by Marceline's mother said he would know how to keep her safe. But Hunson says he is busy "quelling an uprising" in the Nightosphere and that he should tell Marceline to summon him herself later. [Marcy & Simon #3]

Simon records the last of his tapes as a message for the missing Betty, calling her his "princess". He also leaves Marceline with photos of her mother that he somehow procured, and instructions on how to open a portal to the Nightosphere so that she can someday summon her father. Then finally, after nearly a decade together, Simon leaves Marceline on her own. [Everything Stays, The Enchiridion & Marcy's Super Secret Scrapbook]

c. 8 AMB (2018 CE)

Marceline, Hunson, and the Fries Incident

After travelling on her own for a while, Marceline stalks two survivors who turn out to be thylacine werewolves named Remi and Rosella, who are proficient in the arcane arts. She befriends them and they agree to help her summon her father, since they believe he can help them vanquish the tribe of vampires that threatens their pack. Using the instructions left by Simon, the two werewolves successfully open a portal to the Nightosphere. Hunson arrives on Earth and bursts uninvited into Marceline's makeshift fort. [The Enchiridion & Marcy's Super Secret Scrapbook, Marcy & Hunson]

quote "Marceline! Long time no see. Some goober with glasses summoned me. Let's go suck some souls!" Hunson Abadeer [Marcy & Hunson]

To Marceline's horror, Hunson immediately demonstrates one of his demonic abilities: the power to steal souls. He takes the souls of Remi and Rosella, reducing Marceline's new friends to lifeless husks. Marceline is mortified. But despite this, she knows that this is probably her only opportunity to get to know her father, so she tries her best to put the ordeal behind her and get along with him. [The Enchiridion & Marcy's Super Secret Scrapbook]

quote "Even though I hate him for sucking the life from my friends, I need to humour him because, let's face it, who knows what he could do? I can't let him know I don't like him. I can't write him off too quickly. Besides, he's the only one with the answers. There is still so much I don't know about myself and where I come from." Marceline [The Enchiridion & Marcy's Super Secret Scrapbook]

Their relationship becomes more positive after a day at an abandoned carnival, and Marceline believes she is beginning to understand her father's motives. Hunson decides to give his daughter the Abadeer Axe, calling it a family heirloom. [The Enchiridion & Marcy's Super Secret Scrapbook]

quote "When I touched it, a strange feeling coursed through my veins, like a jolt of energy. This axe has some serious juju about it. Good or bad, I didn't really care. It's a gift from my dad, and I will cherish it forever. Funny how your feelings can change so completely." Marceline [The Enchiridion & Marcy's Super Secret Scrapbook]

Unfortunately, this friendship between father and daughter doesn't last long. Hunson says he wants to help the remaining werewolves with their vampire problem, so they track down the rest of the pack to a truck stop on Route 90. But instead of assisting the pack, Hunson does something far worse. In a repeat of his previous actions, he steals the souls of the entire werewolf pack, claiming that he "helped" them since the vampires would have killed them instead. Upset with him, Marceline goes into the truck stop and makes herself some comfort food: a delicious box of fries. But while she has her back turned, Hunson commits one last terrible crime. He eats the fries. This is the last straw. In a rage, Marceline banishes him back to the Nightosphere, abruptly ending his nine day visit. [The Enchiridion & Marcy's Super Secret Scrapbook]

Marceline, alone once again, sets out to continue searching the wreckage of the world for survivors. Shortly after the fries incident, she writes the Fry Song, a ballad about her father. This is one of the first of many songs she will write over the course of her life. [The Enchiridion & Marcy's Super Secret Scrapbook, It Came from the Nightosphere]

non-canon information

In an interview with Teen Zine, Marceline tells a completely different story regarding the fries incident. It's possible that she made this story up to avoid telling the truth. [The Adventure Time Encyclopaedia]

c. 10 AMB (2020 CE)

Schwabl and Daniel

Marceline returns to the abandoned mall where she spent some time with Simon before he left her. All of the survivors who used to inhabit it have either perished or moved away by this time, with the exception of just one creature: a dog, that somehow managed to survive all this time on the food in the mall's pet shop. Marceline adopts the dog and names it Schwabl. Having spent so much of her life dealing with complicated people like Simon and Hunson, Schwabl is a nice change of pace. [The Enchiridion & Marcy's Super Secret Scrapbook]

quote "You know what? It's kinda nice having someone to talk to. I mean... someone who's not just gonna abandon me and leave me with my ding-dong dad." Marceline talking to Schwabl [2015 Spoooktacular]

At some point, Marceline converts the Abadeer Axe into an electric bass guitar and learns to play it. She is still able to proficiently wield it as a weapon as well. [It Came from the Nightosphere]

non-canon information

According to one account, Hunson decides to turn the Abadeer Axe into a bass guitar when he gives it to Marceline. However, this is false. It is actually Marceline herself who turns it into a bass guitar later on. [Seeing Red, It Came from the Nightosphere] According to another account, Marceline becomes familiar with human technology during this time and learns how to hack. [Adventure Time #13]

One day, Marceline meets a talking unicorn called Daniel while sleepwalking. She befriends Daniel and is thrilled to have a new companion. But almost immediately, the unicorn is killed by vampires. Even though the entire encounter could have just been a dream, Marceline pledges to avenge her friend, and decides that she will slay every vampire she can find. She learns to fight from books in the abandoned mall's library. [The Enchiridion & Marcy's Super Secret Scrapbook]

Meanwhile, the world is beginning to lapse into a new ice age. This is probably caused by a combination of Simon establishing his realm of ice and some kind of magically augmented nuclear winter. [The Enchiridion & Marcy's Super Secret Scrapbook]

quote "Simon had once told me that after the war, we might be in for a magical cataclysm. He said it might take the form of a very long global winter that could last for several hundred years." Marceline [The Enchiridion & Marcy's Super Secret Scrapbook]

c. 10 to 13 AMB (2020 to 2023 CE)

Marceline the Vampire Hunter

Marceline stakes her first vampire, a simple minion who was trying to murder a sheep. She also stakes a vampire who was threatening a family of human survivors, but the survivors run away before she can talk to them. The discovery that the vampires are hunting human survivors further encourages Marceline to seek them out and slay them. [The Enchiridion & Marcy's Super Secret Scrapbook, The Empress Eyes]

Before long, Marceline is a proficient vampire hunter and tracks down the Fool: a member of the formidable Vampire Court. She manages to force a wooden stake through his heart, destroying him in a puff of glittery smoke. She realises that this smoke is actually the Fool's soul, and discovers that she has inherited her father's ability to absorb souls. Taking the Fool's soul grants Marceline access to his power of flight; the first of many supernatural abilities that Marceline will inherit from hunting the Court. [Everything Stays]

One day, while trying to catch food, Marceline accidentally lassos a young human girl wearing a bunny hat, who runs away from her. She stalks her and discovers an entire tribe of survivors, who wear animal hats to protect their necks from vampire bites. They are led by a man named Two Bread Tom. The bunny girl is named Jo. To begin with, the tribe runs away from Marceline because of her sharp demon teeth and her ability to fly, but eventually come to trust her. Marceline has finally found a place where she belongs. Despite how terrified Jo was during their first encounter, she and Marceline become good friends. [Everything Stays, Islands graphic novel]

The second member of the Vampire Court encountered by Marceline is the Empress. The Empress meets Simon and tricks him into doing her bidding. Marceline stakes the Empress, steals her soul, and gains from her the power of invisibility. She may also have inherited the Empress' power of hypnosis, but she chooses not to use it. It's possible that Marceline sees Simon again during this ordeal, for the first time since he abandoned her. If that is the case, then they do not stay together for long. [The Empress Eyes]

quote "If you really cared about him, why'd you let him degenerate into this pathetic clown character? He used to have more of a silver fox thing going on with his hair and those cute glasses. He was happier then, you know. When he was serving me." The Empress talking to Marceline [The Empress Eyes]

Marceline decides to take a personal journey away from the tribe to visit the city where Simon abandoned her, for nostalgic reasons. To her surprise, she meets a second tribe of humans there, including two children named Rock and Twiggy who are almost certainly young enough to have been born after the war. The tribe spends its time hiding from the third member of the Vampire Court: the Moon. Marceline stakes the Moon and takes her soul, inheriting her self-healing powers. Marceline becomes impervious to almost all physical harm, able to heal from wounds instantaneously. The second tribe of humans runs away before the fight, and Marceline never sees them again. [2015 Spoooktacular]

A month later, back with the first tribe, Two Bread Tom tells Marceline that they will not be able to stay on the mainland even if she succeeds in killing all the vampires, because the atmosphere is changing and the nuclear winter is approaching. Their plan is to refurbish a large pre-war cargo ship and sail it out to sea to seek a new home. [Everything Stays]

quote "It's not just the vampires, or the oozers, or them hungry-looking rainbows. The latest atmospheric readings are going bananas. Something big is coming, and it's gonna change all this. No, we'd do best to clear out of this continent altogether." Two Bread Tom [Everything Stays]

The tribe is suddenly attacked by the last of the vampires and is forced to set sail as soon as possible. Marceline stakes and sucks the soul of the Hierophant, the fourth member of the Vampire Court. She absorbs his shape-shifting powers, which allow her to take the shape of many different creatures. [Everything Stays]

The fifth and final member of the Court is the Vampire King. With all his minions destroyed and the rest of the Court slain, he is the very last of his kind. Marceline and the Vampire King battle on the deck of the human ship, and eventually Marceline manages to force her stake into his chest. Recognising that he is defeated, the King sees only one way to save his race. As Marceline pushes her stake through his chest towards his heart, the King pushes his fangs into her neck. Finally, the King dies, but not before Marceline has been successfully turned into a vampire. [Everything Stays, Vamps About]

Marceline takes on the title "Marceline the Vampire Queen", and for unknown reasons she decides to remain on the mainland while the humans set sail without her. [Evicted!, Islands graphic novel]

non-canon information

Some accounts suggest that Marceline is an actual queen who rules over a race of vampires, but this is false. Marceline is the last vampire, and a queen in name only, although she is presumably capable of creating more vampires by turning mortals. [Adventure Time #32: "Mystery Plop Part 1"]

Soon after her transformation, Marceline realises that she is allergic to sunlight and craves the colour red. Since she is technically now undead, she becomes immortal and stops ageing in her late teens. After accidentally killing her dog Schwabl by drinking his blood, she tracks down the group of wizards who obtained the Enchiridion following the war and steals it from them. She uses a resurrection spell on Schwabl, turning him into an immortal undead creature just like her. Necromancy is added to her growing repertoire of supernatural abilities. [The Enchiridion & Marcy's Super Secret Scrapbook]

note

Marcy's Super Secret Scrapbook shows that Schwabl was red before Marceline resurrected him, but the Stakes miniseries and the 2015 Spoooktacular show that he has always been white. This is a minor continuity error.

Due to the advancing winter, Marceline decides to use her undead powers to hibernate until it is over. She falls asleep in a cave with Schwabl, using the Enchiridion as a pillow. She remains in this state until the winter is over, for what may be hundreds of years to come. [The Enchiridion & Marcy's Super Secret Scrapbook]

c. 13 AMB (2023 CE)

The Foundation of the Human Islands

The human tribe sets sail without Marceline and heads south-west. On the thirty-third day of their voyage the ship is attacked by sea monsters. Marceline's friend Jo is almost killed, but the humans are able to fend off the creatures. The next day, they make landfall at a large island where they are surprised to find even more humans. Two Bread Tom and the leaders of the other tribes begin fabricating a new society and name their new home "Founders' Island". [Islands graphic novel, Min and Marty]

Before long the humans have established a large and successful colony. Free from the threat posed by the vampires and the other hostile creatures on the mainland, most islanders no longer wear their protective animal hats. One day, Two Bread Tom decides that he wants to explore more of Founders' Island. He takes Jo and another islander named Michiko with him, thinking it will be nothing more than a safe hike through the woods. However, Jo gets abducted by a giant bird and carried to the other side of the island, and spends weeks making her way back again. In the meantime, Tom believes she has been killed and blames his own carelessness for her death. Tom decides that, to avoid losing anyone else, the islanders should construct a "Guardian" to kill anything that tries to enter or leave the Islands. The islanders are thrilled when Jo returns safely, but she actually disagrees with Tom's plans to seal them off from the rest of the world. In the end, she and a group of the other islanders rebel and run away from the colony before the Guardian can be completed. [Islands graphic novel]

quote "You aren't going anywhere. None of us are. We're staying right here. We're not going to lose anyone else!" Two Bread Tom [Islands graphic novel]

The humans on Founders' Island are able to survive the magical nuclear winter. Over the course of the next millennium, they rebuild their society to a level beyond pre-war technology. They reinvent cars, robotics, computers, flying machines, advanced medical technology, geoengineering and much more. At some point, a MO Co airship arrives at the Islands, so it's likely that MO Co helps design the final version of the Guardian. The animal hats originally worn by the tribe members to protect against vampire bites remain an important part of their culture and a symbol of their isolationist ideology. The tribe leaders, including Two Bread Tom, become deified in the islanders' mythology as the legendary "Founders". The fate of Jo and the rebels is unknown. They become known as "hiders"; a derogatory term used for anyone who tries to escape the safety of the Islands. [Hide and Seek, Min and Marty]

quote We had to leave our place because

The world was dying

And everyone that wasn't 