#anyways we stan fleshy gaster

[hyliantimelordin221b]

do you have any favorite theories about gaster, his role in undertale/deltarune, his personality, etc?

MY FRIEND, I AM SO GLAD THAT YOU ASKED

(jk i won’t make this too long i promise)

((edit: warning: this did get long and i am so sorry))

but honestly, i don’t get into detailed theories too much!! i’m open to a lot of different interpretations of him.  i know i have ones that i like a lot, but i don’t necessarily think they are definitely true or anything.  theyre just all fun to consider!!

i’m not sure what i think gaster’s role in undertale and deltarune are right now, since deltarune isn’t even a complete game yet. I prefer to embrace a lot of different theories rather than sticking to any specific one so that I don’t find myself disappointed in what ends up being revealed in canon.

honestly one theory i have is that gaster is just a normal guy in deltarune, since it’s an alternate timeline there’s nothing special about him since he never fell into the CORE (which doesn’t even exist in deltarune as far as we know), but i’m not super attached to it.  i would love to see this be a reality though, considering all the hype around the mystery surrounding gaster just because i think it would be sorta funny (but then of course that could be rly anti-climatic so who knows)

but the main theory/headcanon that i often go back to is that he was once relatively normal before he falls into the CORE.  i like to think he was actually a good person overall, and was caring to his co-workers/assistants etc. (especially to sans because i’m always gonna throw some sanster in here) !!

sometimes i also like to think that he, alphys, and sans were a good group of friends that hung out and made dumb science jokes and probably watched anime together a lot (where the poorly-drawn picture of three smiling people from the skelebros’ house comes into play) though i don’t have too many specific headcanons about that.  i do have a h/c fic about alphys and sans recovering after gaster falls into the core but who knows if it will ever see the light of day considering my penchant for leaving things unfinished and unpublished for indefinite periods of time lkasdflsdl 

anyways i think he always had good intentions, but i think his intelligence and thirst for knowledge sometimes got away from him which would lead to him putting himself in sorta dangerous situations.  this would probably worry sans/alphys/his other assistants/co-workers, but no one really knew how to handle it.  he’d be very adamant about never endangering others with his shenanigans, though, or at least he’d try to be.

it’s a slow decline, but i think events reach a sort of peak when he’s driven (by what exactly, i’m not sure) to decide to use himself as a test subject for an experiment with determination/something involving the void or the anomaly. 

from there, the people he works with notice him beginning to act a lot differently; he’s quicker to insult and ridicule those he works with, and he’s more driven than ever to find whatever answers he’s looking for, and stops at nothing to get what he wants.  he’s also more willing to use others for “help” with his experiments as well, which was a big thing he avoided before (sans has probably been manipulated into being used for an experiment at least once since gaster knows how much sans Cares abt him even if he no longer returns the feeling hhhhh).  eventually he’s completely changed; where an accepting, well-meaning person once was, an emotionless, cruel person now stands.  i think it takes a while for those who are close to him (sans especially) to accept that he’s Not Really Himself anymore, too.

obviously eventually this somehow leads to him falling into the CORE.  there are a few ways i figure this could happen:

sans/alphys/gaster’s other “followers” knew how dangerous he was becoming and one of them pushed him

some part of his old self was still conscious within him and he knew how dangerous he had become to the people he cared about and chose to jump in a moment of clear-mindedness (or maybe he’s completely insane and jumped because he thought it would make him all-powerful or somethin idk)

actual freak accident, maybe because of the increasing insanity of his experiments the CORE destabilizes or something and in that whole mess he ends up falling in (would explain why his “followers” are forgotten as well, i.e. multiple people wiped out in an accident)

but yeah!! while he’s technically erased from existence, i hc that sans and maybe also alphys remember him at least a little bit, and the “don’t forget” picture was drawn by one of them (probably sans) soon after the accident in a desperate attempt not to forget him completely.

anyways, those are my thoughts on gaster!  i lied i made this kinda very long cause i got carried away (sry aaaa), but thnx for the ask!!! i’ve been wanting to talk about my gaster theories/headcanons for a while now, haha ^^