Undertale Headcanons

Common Characters' Headcanons

I'm gonna hop right into business, chief. (Praying that I don't miss anyone-)

Daily dose of warnings:
Kinks are mentioned.
At the bottom, (I give another warning), I hop into the sexual category.

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Underswap "Blueberry"

- Friendly and cuddly
- I don't think it's remotely possible for him to be a yandere for anyone (but that doesn't stop me from reading the fanfictions, haha)
- Actually decent at magic, tough when he wants to be
- Very likeable in general, you can pretty much get away with shipping him with anyone in my book (just as long as it isn't a toxic/abusive relationship-)
- Idk what his sexuality is, but could definitely be homo
- Lawful Good
- Swears very rarely, and when he does he doesn't lose his marbles and start cursing like a sailor (contrary to popular belief?)

Underfell "Red" ("Edgy")

- Cannot be a yandere at all, he's just not like that
- Shippable
- Ngl, he's pretty kinky and/or sexy. Personally I don't think so, but he is
- He can actually be really sweet and caring when he wants to be, you just gotta break his shell
- He can make plot interesting
- Guessing he's homosexual but uh, I can see him liking girls too-
- DEFINITELY Lawful Evil
- swears consistently

Cross X-Tale

- K he's mildly hot
- Not well-suited in the kink/sin department
- His character is good, he actually feels really developed!
- It is extremely difficult to ship him with anyone
- Not very likeable
- STUBBORN AF
- Does NOT call Nightmare "senpai"
- Doesn't care about Corrupted Nightmare at all, he just wants his freaking world back
- I'm guessing bisexual?? Maybe Demisexual biromantic?
- Chaotic Neutral probably
- swears occasionally

Fresh

- DOES NOT have an AU (this is canon anyway!)
- His parasite is actually toxic, and therefore he is dying at a slow pace
- He shouldn't be shipped with anyone, although possible-- yet there are exceptions to this rule
- His glasses should only have four-letter words on them, (no one acknowledges what it says,) and occasionally there can be more letters/words on his glasses
- He can curse, but he would censor his own swearing and be moderately ashamed of himself afterward
- True Neutral
- He's canonically acearo (asexual, aromantic) and I support that completely

Ink

- He comes from the AU "Inktale," but after his soul incident, he not only lost his soul but no longer exists in the universe (making him an Outcode)
- Shouldn't TRULY be shipped with anyone
- Likeable
- He's caring
- Very forgetful and often loses his train of thought
- He rants and blabs on for hours if you let him
- Likes milk(?) Maybe, maybe not
- Finds it enjoyable teasing and being an asshole
- Definitely 100% asshole
- Should not be trusted with kids
- Likes puns
- Makes puns just to piss ppl off, especially Error
- His paintbrush can work anywhere, even in magic-restricted areas
- He's canonically acearo (asexual, aromantic) and I support that completely
- Canonically Chaotic Neutral and I think so too
- Doesn't swear, only on the rare occasion, but he doesn't mind it

Error

- Doesn't crash too often, but occasionally yes
- He is very much a tsundere
- He doesn't hesitate to kill anyone, even ppl of use to him
- He loves cats
- Dolphin
- He is very bad at keeping up with the current memes
- Extremely dangerous, but ONLY because he has his strings. Take them away and he's majorly screwed
- His strings can work anywhere, even in magic-restricted areas
- Low-key falling in love with Ink (whether I ship it or not, ppl can love who they love and not be shipped)
- Absolutely hates puns but secretly reads them
- Every now and then he makes a really good pun that sends Ink toppling over laughing his a$$ off forever
- Probably gay
- Chaotic Evil
- Swears whenever he feels like it; especially prone to it when he's mad