Suzy masterpost, because people need to pay more attention to Suzy. This is not a theory post, but more of a collection of information on what we currently know about the Undertale character Suzy. Of course, due to the nature of Suzy as a very mysterious character, there will be slight speculation, but hopefully it’s clear what is canon and what isn’t.

Section One: The Beginning

When Undertale first released, there was very little that we knew of the character “Suzy”. Even less than what we know now, which is impressive. The only connection we had to her was word of mouth from an NPC with no name, but known in the files simply as “clamgirl”, found in Waterfall if your “Fun” value is between 80 and 89.



When you first talk to her, she says the following:

* I’m visiting Waterfall from the city.

* Synchronicity…?

* My neighbor’s daughter looks about your age.

* Her name is “Suzy.”

* I feel like you two should be friends.

* You have…

* A neighbor’s blessing!!!

(”Suzy” here is written in yellow text.)

Talking to her a second time:

* Not knowing where I live is no issue.

* Fate finds a way.

And, finally, talking to her post-pacifist:

* So you never became friends with my neighbor’s daughter.

* Don’t despair.

* This world has infinite opportunities.

* But there’s a limit to the things you can do.

* Accepting this is healthy.

* Take my neighbor’s blessing!

* And consider this blessing for anything you like!

(She has more dialogue, but this is all that you really need to know.)

Section Two: The Patch

In January of 2016, a couple weeks after Toby made (and subsequently deleted) a tweet about he wanted to “start something else” in 2016, a something which we now know to be Deltarune, Undertale received its first major update - version 1.01.

Here’s the relevant information.

Toby made two very, very minor changes to Clamgirl’s post-pacifist dialogue. Here is the new dialogue, with changes bolded:

* So you never met my neighbor’s daughter.

* Don’t despair.

* This world has infinite opportunities.

* But there’s a limit to the things you can do today.

* Accepting this is healthy.

* Take my neighbor’s blessing!

* And consider this blessing for anything you like!

He changed “became friends with” to “met” - emphasizing the fact that Suzy is not a character you can meet in Undertale.

He also added the word “today”, to emphasize the fact that this does not mean Frisk will never be able to meet Suzy.

This wasn’t the only Suzy-related thing in the version 1.01 patch, however. The patch added a well-known line of dialogue to the lab behind Sans and Papyrus’ house. Normally, when you examine a certain drawer in the lab, you get this dialogue:

* (There’s a photo album inside the drawer.)

* (There are photos of Sans with a lot of people you don’t recognize.)

* (He looks happy.)

However, from version 1.01 onward, if you examine this drawer after having spoken to Clamgirl, you will get this dialogue instead:

* (There’s a photo album inside the drawer.)

* (There are photos of… Huh?)

* (A card is sticking out from the back flap of the binder.)

* (It’s a poorly drawn picture of three smiling people.)

* (Written on it…)

* “don’t forget.”

Again, I’d like to emphasize that this dialogue only appears if you’ve spoken to Clamgirl, if you know who Suzy is. In this way, the phrase “Don’t forget” is intrinsically linked to Suzy.

So, from all of this, we can gather a few things about this mysterious “Suzy” character.

She is a girl around Frisk’s age. She lives in the capital. She has at least one parent (who happens to be Clamgirl’s neighbor.) Frisk is, apparently, fated to meet her. Despite this, it is impossible to meet Suzy in Undertale. Sans’ photo album will have a card reading “don’t forget” only if you know who Suzy is.

Section Three: Fast Approaching

Did you think that was the only Undertale update that added cryptic Suzy-related dialogue?? Guess again!

Fast-forward to September 2018. Undertale has just been released on Nintendo Switch! Almost immediately, it is discovered that the Switch version added this:

(excuse me posting my own video, but it’s really the best one on youtube…(side note; i’m not sure if she’s actually supposed to reappear when you exit and re-enter the room, that might be a side effect of me poorly emulating the game))

Anyway, this is what happens post-pacifist in the Switch version if your fun value is exactly 81. If it’s 82-89, Clamgirl has her regular dialogue from v1.01.

The Switch version of Undertale came out September (15 in Japan, 18 everywhere else) 2018 - A month and a half before the release of Chapter 1 of Deltarune. In hindsight, it’s obviously foreshadowing - but when you think about it, foreshadowing what?

A month later, we play Deltarune, and meet a brand new character named Susie. Not Suzy. (More on that distinction in a bit.) If that’s the case, why did Clamgirl claim that we were going to meet Suzy very soon?

Well, the answer is that we don’t know.

It’s important to consider what Clamgirl says from an in-universe standpoint. It’s easy to take this line as Clamgirl talking directly to us, the player, since she’s clearly hinting towards Deltarune - but in actuality, in the game, in-universe, she’s talking to Frisk. She’s telling Frisk that they’re going to meet Suzy very soon. It’s possible that, when it comes down to it, what Clamgirl said might not apply to us at all.

Section Four: Deltarune

In October 2018, Toby Fox not only released an entire demo for an entire new video game, but a video game with a major character named Susie. Not Suzy, but Susie???? What’s going on?

Since Deltarune seems to have an alternate universe thing going on, some people believe that Susie is simply the Deltarune universe’s version of Suzy. This is definitely a possibility, but there is also reason to believe that this may not be the case.

Deltarune also introduces a new character named Catti, who is Catty’s little sister. Like Suzy and Susie, their names are pronounced the same, but spelled slightly differently. This could be hinting at the difference between the two.

As it stands, however, we currently do not know the relation between Suzy and Susie, or if any even exists.

In any case, it is likely that Suzy will be a major part of the story of Deltarune, as the main theme of the game is called “Don’t Forget”.

Bonus: A Comment From Toby

To my knowledge, the only time that Toby has ever publicly spoken about Suzy is in this tweet, since deleted (not specifically, but because Toby wiped all his tweets before a certain date), from nine days after Undertale’s release:

Unfortunately, since we’ve lost the context, it’s difficult to know who exactly “yellow kid” refers to here. The tweet was most likely in response to speculation regarding Suzy’s identity. Since Suzy’s name is written in yellow when Clamgirl speaks about her, some people assumed that Suzy may be associated with the color yellow. “Yellow kid” could be referring to Monster Kid, Frisk, or the yellow human soul. (I’ve heard people say before that this tweet is specifically in response to people speculating about Monster Kid being Suzy, but I don’t know how true that is. If anyone has any proof of this claim, let me know!)

Conclusion

Generally, when you’re writing an analysis of a character, you’re able to say more than three facts about them. There is very little we can say about Suzy, however, without delving into pure baseless speculation. Hell, we know more about Gaster, who is generally regarded as the mysterious Undertale character.

It’s very likely that we will learn more about Suzy in the future, but right now, we don’t have much to go on. However, that also means we’re free to speculate pretty much anything we want. Essentially, until proven otherwise, Suzy is whoever you want her to be..!