#especially the one where papyrus is dead bc as long as HE'S alive i can see him kinda. tethering him to his morals a bit
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Okay, so this AU. The short version is:
Gaster, back when he was still around, more or less accidentally created Sans and Papyrus as monster resurrections of fallen humans. Then, only shortly after Papyrus is “born”, Gaster falls into one of his creations/machines and is shattered. A long time later Frisk comes along with their ability to mess around with the flow of time and space and ends up leading Sans to the grey room in waterfall where what is left of Gaster’s physical form awaits them, which presents Sans with a problem: now knowing that Gaster is in fact not dead, he wants to try and help his old friend out of this pitiful existence he’s trapped in, but is that worth risking that Papyrus – who doesn’t know about any of this because after being resurrected he slept a good while – finds out?
The long version (since I got a little carried away with it) is under the cut:
I guess most of you have messed around with the ini-file at some point, altered the Fun value and found all sorts of things – like the mystery man who we all believe to be Gaster or the grey NPCs.
Basically, in this AU, post pacifist run Frisk can control the flow of time and space at will (as in, they can alter their own ini-file because they are that meta) and ends up talking to Sans about it. Because Sans is first and foremost a giant prankster, he asks Frisk to show him what kinds of things they can do, so Frisk is just like yeah, okay, and shows Sans the grey NPCs.
These NPCs have some very interesting lines if you talk to them, especially the grey donut guy and the big grey head – both talk about a Dr. Gaster who disappeared suddenly.
You can check Gaster’s wikia page, it goes into more detail about what the NPCs say and all sorts of theories about Gaster himself.
Frisk doesn’t think much of it – I mean, they’ve seen a lot of weird things and the River Person says cryptic stuff all the time. Plus, they can’t connect all they’ve heard because they don’t know who Gaster is.
But Sans does.
And that is the actual AU really: Back when Gaster was still around (and I mean physically), just like Alphys, he tried to find out what it was that, in contrast to the monsters, kept humans going and isolate it. Only he thought of the wrong thing because no one had ever done studies on this before and went for ambition instead of determination.
So, one day, Gaster is minding his own business in the Snowdin forest when he comes across a fallen human: badly injured, barely alive anymore. Maybe he fell down somewhere else rather than the ruins. Maybe his fall was unlucky and he missed the flowers, then dragged himself until he reached the forest and collapsed there.
Anyway, Gaster takes the human home with him because that is the perfect timing for his studies. The mentality concerning humans in the Underground isn’t the greatest and realistically, that human is kicking the bucket any minute anyway, so Gaster might aswell make his death worthwhile and get some scientific knowledge out of it.
So he hooks the human up to a machine he built (yes, the broken one in Sans’ and Papyrus’ house) with the plan to extract his ambition. Only the machine isn’t fully functional yet and just extracts everything it possibly could, so Gaster tries to stop it because that wasn’t really the plan.
In the end, the human’s body has rapidly decomposed so only the skeleton is left, but because Gaster stopped the machine mid-process, there was enough determination left to act as a sort of “life force”, thus this skeleton is still very much alive, albeit sleeping, or probably more comatose. He’s not dead either way.
When he eventually wakes up with help of a little monster magic injection or something along those lines (assuming Gaster did his research on that also and knows how to extract moderate amounts for practical use), he’s in a state of complete amnesia regarding his life as a human. So Gaster decides to tell him that he “created” him since it technically isn’t all that wrong and Sans just rolls with it. He doesn’t ever remember anything, so Gaster doesn’t explain what happened.
But Sans’ skeleton body keeps falling apart because now technically being a monster rather than a human, he lacks something all monsters usually possess, which is his own magic – he’s only gotten foreign magic like a kind of blood transfusion and it was only a small amount after all. Gaster then tries to find a substitute for that so Sans doesn’t have to keep losing limbs. He realizes that humans possess all the necessary “ingredients” for the presence of magic in their bodies, but something stops them from actually becoming magic, which is what he believes to be ambition.
So what he does is, he throws everything the machine extracted from Sans into a giant bowl, gives it a spark of his own magic as a catalyst and BOOM! Gaster just created a bowl of magic.
He injects Sans with ¾ of it, mainly because he wants to keep the rest for research and tadaa, Sans as we know him is alive and kicking.
Because he only knows Gaster and doesn’t bother going out all that much, Sans ends up helping Gaster with his work a lot and eventually discovers the Gasterblasters. Gaster explains that they’re powered by magic and basically unusable because they need a LOT of magic fuel to do what they’re supposed to. But Sans just lights them up with ease so Gaster then knows that artificially created, human-based magic is overpowered as hell (bc you know, he erroneously eliminated ambition from his magic mix but kept the determination which is characterized as a super strong driving force).
A while later another human falls down and Gaster finds him pretty much the same way he found Sans: on the edge of death. So he takes him home and Sans just goes HOLY SHIT because he doesn’t remember being human but he remembers humans in general and it’s the first time he’s seen one ever since he fell down.
Meanwhile Gaster is hooking the human up to their machine again because if he can do it once, he can do it twice, right?
So he flips the switch and the machine starts extracting all sorts of things again, but due to some changes Gaster made to it previously and since those are based on his assumption of ambition being The Thing, fails to extract any ambition this time (probably a mistake since that would be the one thing it SHOULD be extracting, but mainly because I thought man, Papyrus is so much more driven than Sans, there’s gotta be a reason). Gaster stops the process before it’s completed just like before and well look at that, it’s another sleeping skeleton.
Gaster gives him the rest of Sans’ magic because now with what he extracted from this new human he can easily make more of it while Sans is slowly piecing everything together.
Gaster then comes clean to Sans because there is no other option, really, and Sans just goes well, at least I’m alive. I can’t remember anything and otherwise I’d be dead so that’s cool.
Later Gaster tries to do the whole magic-making thing again (without Sans) but falls into the machine while trying to catalyse the process with his magic, thus he is ripped to pieces and thrown across time and space and the machine blows up and has been broken since.
Sans is then left with the still sleeping Papyrus and decides to just stay in Gaster’s house and look after Paps since he probably won’t remember anything either once he wakes up. (That goes with Papyrus’ canon knowledge that Sans manages the house payments, but he doesn’t know how – because Sans doesn’t actually do anything.)
So then, much later, Sans finds out Gaster is not actually dead apparently, he’s just everywhere in tiny pieces. So he wants to help him, of course, but is afraid to tell Papyrus about any of this, because he doesn’t know about Gaster or even that he and Sans aren’t actually brothers. And he’s kept it a secret all this time, so now he’s afraid if he comes clean, it will damage their relationship because he didn’t trust Papyrus enough to tell him. So really it’s just another backstory for Angst TM…
DEEP BREATH - yes. That’s it. It’s very long.
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@bonepranks sent - 18 and 20 for bo (im just thinkin about all these cursed au scenarios like the one where gaster and chara have frisk go the vertebral heights in genocide too
18. Things they’ll never admit
Bo has admitted in previous asks that I wont link b/c I’m very lazy- but she has trouble admitting the finality of her parents fate specifically. With her brother- his death was easy to accept, as it was something that happened right in front of her. But with her parents there is a lot of mystery there, so much of what happened is actually not known at all to Bo. They simply vanished. For a long time she quietly maintained that maybe they’d be back but she has long since concluded that her parents must be dead. But she can’t say it. Not out loud.
She’s also hesitant to admit just how desperately she needs the people in her life. If it weren’t for Lark, she’d probably be dead by now, and if it weren’t for Sans and Papyrus, she’d be holed up in a hole with a human child who probably would have become depressed with the situation eventually and left and she’d be back where she started. Bo likes to play off that she’s really strong and independent but she feels that she is actually VERY dependent on the people around her.
20. What-ifs/Alternate Timelines
I’ll build off of what you suggest: A Vertebral Heights Genocide. We can approach this from a few angles.
1. The Player, knowing that VH exists, goes down there at the logical point to go- before the Dummy Fight in the dump. The player descends upon the city and slaughters everyone. Most of them are pretty easy kills, a few people like Arms are a bit tougher, but in the end the player ends up getting to ‘top’ LV pretty quickly, especially after VH’s final boss. Bo poses a very tricky fight for the player, a battle of attrition that drags on b/c Bo’s HP is so high. Similarly to our thread where Bo and Lark are killed by Undyne, Bo commands Lark calls Sans, but it’s not so much for help, but more of a warning of what’s coming. Since the player killed everyone in Snowdin he’s probably already on alert. He gets a call, but the call is cut off almost immediately when Lark is slain, which triggers a much more difficult phase in Bo’s fight, which ultimately ends with her death as well.
2. The same scenario as above, except Bo manages to get Lark away before the player gets to them. Lark then makes his way through the rest of the underground ahead of the killer. Everyone assumes HE must be the killer so they all attack him but he escapes each time. He makes it to the castle and is stopped by hey you guessed it our good judge Sans who’s expecting the killer but oh woops it’s Lark. Lark explains what happened in the Heights, and how he’s going to Asgore to give up his SOUL so Asgore can stop the killer. Sans is? Probably not super down with this, but through the power of me wanting this horrible sad thing to happen, Lark gets away from him, probably b/c the killer shows up. Lark goes to Asgore, who initially refuses to hurt him b/c he’s clearly so small and good, so Lark grabs his trident and uh well I drew that thing that one time and uh yeah that’s what I’m getting at, Asgore ascends and demolishes the player until the player resets.
3. Perhaps, through random chance, or maybe it’s intervention of some kind, but Bo is up in Snowdin when the killer appears and slays everyone. She is there in the immediate aftermath of Papyrus being killed. She wants to go after the killer and take them out ASAP but Sans forbids it, telling her to go hide in VH. She really doesn’t want to but goes back, only to find that it’s already been gone through. She leaves Lark down there b/c she doubts the player will go back and she doesn’t want Lark where she’s going. She returns to the UG and finds her way to the Castle before the human does. There, she waits in the judgement hall that she’s heard about from Sans. When the player appears to fight, during one of the pauses in the fight, she jumps out and helps sans obliterate the player. Repeat until defeat or reset.
4. The player goes through the entire underground. At the end when the offer to erase the world comes up, an option for more power is presented. The player returns to the garbage dump (Kind of like how the True Lab is a sort of bonus area for a Pacifist run, VH serves that role in no mercy run) Bo has no idea what’s happened, or maybe only has a slight idea of what’s happened. The player appears, taunts her about everyone she’s killed. VH is decimated and Bo is slain, but Lark survives and is the only one and he has to fight for the first time in his life. It’s. It’s not much of a fight.
5. After a near complete route (perhaps one where Papyrus alone is spared) the bros go down to VH bc there’s no one left in the UG and it’s really depressing. Bo takes care of them, they sort of... Find roles for themselves. It’s not great but at least they’re alive. Alternatively, the player comes back and you’re treated to a TRIPLE battle against Sans, Papyrus, and Bo.
I could go on for literally years you know how my brain is.
Send me a character + a number and I’ll tell you my headcanons
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