Finn's swords refer to the bladed weaponry that Finn uses throughout the series.

These are the swords that Finn has used most often.

Name Basic Description Image

Grass sword The grass sword first appears in the episode "Blade of Grass," where it comes to replace the broken demon sword. Finn buys the grass sword for three dollars from the Grassy Wizard. Finn discovers that the sword is cursed when it begins following him around and tries to bind to his body. When he accepts the sword's curse, he gains greater control over its abilities. Finn wore it around his arm and could extend it into a sword at his will. It ultimately ripped off Finn's right arm when it tried to save him from the Citadel in pursuit of his father Martin and some of the multiverse's worst criminals. When Finn's arm grew back in "Breezy," his new arm was actually one made of grass hidden under his skin. His grass arm has the ability to burst through his skin and control itself like the grass sword. The Grass Sword can no longer be used as it took control over and manipulated the Finn Sword to make the character Fern. A reaction to when Finn tried to regain control over it so it would not kill a beloved character.

Finn Sword The Finn Sword is a sword that Finn obtains in "Is That You?" It replaces the grass sword. The sword is created when Finn prevents himself from waking up Jake to save Prismo. However, it is first seen in "Breezy" when Finn imagines Princess Bubblegum holding it. This sword appears to have the spirit of the version of himself that he stopped in "Is That You?" inside, and while Finn uses this sword, his physical attributes (strength, agility, etc.) are doubled. In "Dentist," it is seen cutting through giant worms with ease, suggesting it is quite sharp and durable. The Finn Sword can no longer be used as it combined with the Grass Sword to make Fern. After Fern's destruction in Come Along With Me, his remains take the form of a seed shaped like the Finn Sword. That night, Finn and Jake plant the seedling together, which causes a massive new tree to sprout with a remade Finn Sword lodged in the top. Many years later into the distant future, Shermy and Beth find the sword on the top of the tree.

Small sword The Small sword is a rapier-like blade that Finn is first seen using in "Do No Harm", when, using it, he tried to wake Susan up from her coma. The small sword Finn uses looks very similar to Rattleballs's sword. The blade is very thin and is meant to be a weapon used to stab, although it is capable of slashing if needed. After the formation of Fern, Finn can no longer use his Grass Sword or Finn Sword, however why Finn chose to discontinue his usage of the Root Sword is unknown. This sword makes further appearances in Elements suggesting that the Small sword may be Finn's preferred weapon, currently. The sword is then used by Sweet P to destroy the Farmworld Lich's hand. Shortly after, the sword was irreparably damaged during Finn's fight with the Grumbo.