Gaster!Sans was originally made for an AU called Underpatch, made by (now deleted) Tumblr user Borurou.
Yoralim (creator of echotale) did NOT create Gaster!Sans, and frans is NOT canon to anything related to Gaster!Sans other than echotale.
Because of Borurou’s blogs being deleted, this side blog (run by @hollow-indigo hiii) is dedicated to archiving as much as possible of the original AU, UnderPatch.
If you find anything I have missed, screenshots, old reblogs of their art, context behind certain images, I will gladly take it. My askbox is open, and my messages should be as well if you wish to remain anonymous.
Borurou’s FAQs/Boundaries:
💬 0 🔁 4 ❤️ 24 · Boundaries from FAQs
Obtained via: Wayback machine + old reblog
note: Generative AI related accounts will be blocked. Bigots will be blocked. Darkshippers will be blocked.
Hello! Sorry for my English, I'm writing through a translator because I don't know English. >< I'm a big UnderPatch fan, but unfortunately, a lot of information from the time UnderPatch was developing was lost (the tablet with the screenshots broke). However! I was able to dig up something on Pinterest and I want to share it with you... I think I didn't see this on your blog... Sorry if I've bothered you, and this is very little! If I find anything else, I'll be happy to send it to you. And thank you SO MUCH for deciding to create this project. You helped me refresh my memory and rediscover how much I love this AU! <3 P's (If I fix my tablet and can get the information from it, I'll definitely share it with you)
I think i remember seeing this at some point during one of my wayback machine searches, but didn’t post it for some reason, thanks for finding it!
Copy Pasted version of the post’s text for better readability under the cut
ok so i was thinking writing about gaster!sans wall of text down below
I will try not to make typos lo!
Well, we all know he's a fusion. Since he is one, his personality might flip a little sometimes, not too often, this could be because he's two at the same time, but NOT too. Because of this, he can have some confusing times, and that's why of this characteristic, somewhat like a conversation inside of him, not that Sans or Gaster ARE there or "alive", but a sensation of discomfort and hassle. He's then, a complete new person. (I'm laughing, gaster!sans confirmed for GARNET LOL) Sans and Gaster doesn't exist anymore, and they re one "forever", resulting in Gaster!Sans.
About his personality, it's all based on my own headcanons of Gaster and Sans, so, some people could not like them but I try to make them as light and canon as possible (Except Gaster, we don't have shit about him haha). He could have his personality changed sometimes, like I said before, making an attribute more obvious. Like I said multiple times, he's really calm, he looks almost all the time in control of himself, sometimes could flip and be more of a jerk (Gaster side, I like to think Gaster is more... sassy lol) or more likeable (Sans side). Like Sans, he can be VERY lazy, but because of Gaster's hard-working scientific nerd side, he's exactly in the middle, but heh he still really like sleeping, oh boy. He's dedicated, sometimes hardheaded, actually a big nerd, somewhat a jerk, calculating, tired bag of bones, and, has esteem that he tries to mantain (I guess it's Gaster's side) but he has some self-hate, and problems that he preffer keep to himself. (going side to side, because sometimes feel better, sometimes not) If he's angry, sad, etc, he often doesn't show it, and keeps it with himself, or just doesn't appear and has a moment alone, trying to recover. Basically, it's hard to know what he's exactly thinking about.
Here's the part I guess a lot of you people are interesed in: romantic attitude/life lol. I said before in my tumblr that he's actually not flirty, he could be, but not too often, if he does, he's just having fun doing it, but eh, not actually FEELING it. About his relationships, he preffers not having dates, because he has the fear of open up, maybe hurting the partner, or getting hurt himself, he's actually a pretty insecure bean haha. He also too, doesn't feel the need to search for a love interest, since he's more busy with other stuff, and also, himself.
I think I can write even more but, I'm too lazy and I will do it another day hehe
I will make a list of suff he does/ or shitty curiosity things:
I said in another post that he plays the piano, this is why of my headcanon of Gaster, the old dude know some refined stuff, still, not an expert (mixed with Sans, since he doesn't know how to play it)
He can speak in sign language like Gaster (another hc) and be sassy with it.
He still likes puns, of course.
He's good with kids (Gaster and Sans parts mixed) so I| draw him with little Frisk sometimes, being a uncle haha
He stays woke up at late hours at night because of his Gaster side, doing what? scientific stuff because he's still a nerd.
Still likes ketchup.
He could smoke to try to cope with some feelings, alcohol too but, not often.
He likes to tease people (Sans's jokey side + Gaster's sassy side).
He's somewhat insecure about his scars, so he preffer if people doesn't touch them.
When he's bored, he likes to play shitty games (Sans's side even if he sometimes doesn't understand shit (Gaster side).
The patch on his normal, most used, jacket, was sewed by Frisk, and made with Gaster!Papyrus's help.
He mantains a good relationship with G!Papyrus (will not say that much, but, they don't live together anymore, sometimes yes, sometimes not)
He really likes rain, for some reason, guess is because he feels at peace when it's raining.
Hes neither a cat person, or a dog person, he likes them both. (maybe someone wanted to know this..?)
He could be good nerd friends with Alphys.
He likes going at bars, when he's not busy being a big nerd.
He once smoked 10 cigarettes at the same time (sorry i had to shitpost LMAO)
He, of course, likes coffee (Gaster/Sans mixed)
If he’s doing something that Sans and Gaster has completely different situations in the matter, he can have a really little crisis (example, playing the piano) but not thaaat often, and it has to be on something he's not used to do.
Well It hink that's... a lot? I will maybe write more later. Sorry for the typos and misspellings, remember english it's not my first lenguage, so I tried really hard at making this hehe hope you people are happy with this info I give ya <3 ok i will write normally now in the shitposting MANNER LAO i skipped some little stuff but yee... this is... a lot of text lol sorry if some points are messy, i'm terrible at explaining things sniff
