1 - 20 of 169 Works in Alternate Universe - Something New by Rahafwabas (Undertale)
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This little skele, a Sans type, is used to taking on whatever title was expected of him. So when the entire multiverse tells him he is a 'Bad Sans' who can really blame him for joining others who fall under this title. That is as long as Nightmare finds him useful. His past titles have left him with a very limited set of skills, knowledge, and expectation. Yet he is willing to give up so much more just to stay.
First chapter is NSFW, and then there aren't going to be much until maybe in the future. Plenty of triggers so please tread carefully, I am not used to posting for others to read.
Series
- Part 1 of Imprint
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After the events of Multiverse Madness, with Shattered and Reality now back in their own multiverse, the fighting is quick to once again break out. Reality explores and learns about his multiverse and the damage Shattered has done to it and attempts to save it, while Shattered continues his efforts to stop Reality and get him encased in stone again. The two of them make allies and enemies, Reality making friends and becoming part of a found family while Shattered follows in Nightmare's footsteps and manipulates his allies into thinking he cares for them. Traumas are experienced, friendships are strained, loyalties are tested, and deaths are witnessed and grieved for. It's an emotional rollercoaster, so be prepared for what happens, as it's not for the faint of heart.
Discord server: https://discord.gg/wQfvxyEuvj
Tumblr in case you guys want to make fanart: https://www. /werecat1234
Shoutout to my beta readers Ali, Rain, Iluvdragons, Prophet, Poki, Clichély, and Nova! You guys are awesome! Thank you guys so much for beta reading this for me and giving me feedback on the story, you have no idea how much it truly does help!
Series
- Part 4 of Werecat's UTAU Megaverse
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One moment, you’re living a dull life, following the same routine day after day. The next, you wake up trapped in a cold, unfamiliar place, surrounded by bars and creatures that aren’t human. Your purpose here? Maid. At least, that’s what they say. But there’s more to this dark, twisted world than simple tasks. The figures watching you from the shadows have their own plans, and you're nothing more than a pawn in their game.
is this good enough or what? JUST READ IT ALREADY!
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The human was not gonna back down nor fight, and Sans, if possible, wanted to avoid a violent escalation of the situation as well. Because, despite the souls’ best efforts, his body had not yet recovered from his escape. Every single one of his bones ached, and he was almost certain that the cracks that already covered a majority of his skull had expanded.
However, the stalemate didn’t last long because, as it seemed, the human had an ace up their sleeve. The outline of a black soul manifested on their chest and, soon after, a bright red button with ‘RESET’ written on it appeared in front of them. Sans barely had the time to notice Killer’s eyes go wide and wonder why that was before the human pressed it.
Sans stumbled onto a snowy path with no grace, alone and lost in an unfamiliar frosted forest. Snowflakes slammed harshly against his bones. They looked so delicate and yet he could swear they left a thousand tiny cuts on him. It was torturous… and yet familiar.
That was the power of a human. No. That was the power of an anomaly.
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or, Fresh out of the Void Color stumbles upon Something New. And, in his attempt to help, he perhaps bites off a bit more than he can chew
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Cold gets the worst out of people; connecting the enemies and destroying the families, causing the suffering and death of so many innocent souls.
It seems the trouble with Killer, Horror and Dust was that they were without imagination. Or was it something else that made them visit such a deadly place?Or: Nightmare punishes the murder trio by sending them to the coldest Snowdin forest imaginable. It turns out they can sometimes get along.
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Cooking With A Killer Robot And Killer by YourAllMightyLord0Mixer
Fandoms: Undertale (Video Game)
14 Aug 2025
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Everyone remembers the RESETs and as they're trying to fix whatever they could now that the human is gone and Sans- or Killer as he goes by is responsive again, Mettaton has decided to get him on an episode of his show Cooking With A Killer Robot.
Surely everything will go well!
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Nightmare notices lately there's been high influxes of negativity within the multiverse. Even stranger so, was how heavily concentrated they were within one AU. When the demigod of negativity finds opportunity to investigate, he didn't quite know what he expected.
It certainly wasn't this.
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(A/N: An f!god fanfic. Error comes in later.) -
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Undertale is a game half the world has played, and its fandom has flourished. So it was quite the surprise when monsters began to emerge from a mountain.
Sure, everyone had knowledge of the True Pacifist Route, and those who've dabbled in the fandom have read stories of Post-True Pacifist, but the fact that a new race of monsters emerges out of nowhere was interesting. Monsters suddenly had to cope not with the humans forcing them back underground, but with their publicity and unexpected fame. There are other small inconsistencies that no one can figure out, like the name of the Eighth Fallen Human.
Meanwhile, across the Multiverse, Nightmare is amassing an army. He shatters the wall between fact and fable and prepares an attack. Some of his subordinates are more happy with this than others.
If it wasn't enough that monsterkind was famous, suddenly, the humans' own works appear to come to life to wreak havoc across the city. Hurting them is impossible. All that's left is to stall.
A tribute to and deconstruction of the Undertale Fandom.
Everything has been written beforehand. It will always update once a week.
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A collection of connected and unconnected one-shots (Even the unconnected ones will reference others), requested in the Discord Server and prompts that I wanted to explore further. One-shots will be of both Merging Timelines and Multiverse Madness, and each chapter title will show which story it's from! There may also be AUs of Merging Timelines and Multiverse Madness in here, and those will not be Canon to either story line. Also, not keeping the fonts for the MT boys, so them being missing isn't a mistake or anything in case you're wondering.
Note: The one-shots have random lengths. Some will be as long as a chapter, and some will be shorter. There will also be multiple parts to some one-shots too, depending on the plot.
Discord server: https://discord.gg/wQfvxyEuvj
Tumblr in case you guys want to make fanart:https://www. /werecat1234
Series
- Part 3 of Werecat's UTAU Megaverse
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I think we get the gist right ? Innocent girl,guy,them stuck with skeletons who hate them because of they're precious girlfriend,. Except there's a twist ! Your blind and your married to one of the most viscous sanses in the multiverse nightmare with his crew who care for you deeply as family and let's just when shit hits the fan it's going to be beautiful.
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Killer's struggling with eating, but luckily he has someone that does care.
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In one multiverse, there is chaos.
A Creator unknowingly tips the balance, and a Destroyer writhes in pure pain.
The multiverse is governed by Fate and observed by Destiny, Karma, Light, Dark, Death, and Life.
But what no one realizes is—they are not the first.
Fate once created another multiverse… then abandoned it. Destiny, however, did not. Destiny gave it freedom and continued to watch over it.
When the Destroyer is cast into the Void and crashes into that forgotten multiverse, they take him in as their own.
And there, two beings—a skeleton and a human sorcerer—fall in love with him.
Original FGOD!Error belongs to Harris6 (Wattpad)
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"Oops, careful there. You don't know what could happen if ya slip."
You’re an Au Traveller who ends up in an alternate timeline known as Something New,
or as most people call it,
KillerTale
You soon realize this and attempt to get out, but the Sans from that Timeline notices you and decides he wants to play a game of Hide 'N Seek.
But imagine that one day in the distant or not so distant future, the two of you could actually fall in love,
Will he kill or will he spare you?
How will his Boss react to his choice?
All will be uncovered soon... -
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He wanted desperately to go home and hug Papi. He wanted to make his world-renowned tacos and enjoy a real meal that didn’t just taste of greasy sauces or Styrofoam. He wanted to see Alphys again and show her how much he had improved and beg to finally be accepted into the royal guard.
But he knew he couldn’t.
If he went back there as he was now, Dream would immediately pick up on his distinctive brand of positivity. He always did when Blue tried to sneak away for a couple of days after a fight with Ink. And then he would be dragged back and the cycle would continue.
But maybe…
Well, maybe, if the King of Negativity was just as cruel to his henchmen as Ink and Dream always said, there was a way for Blue to ruin himself enough that there would be no positivity left in him for Dream to track. And then, finally, he could go back to his AU.
Mind set on that half-arsed plan, he met Error’s eyes once more, this time with true determination shining through his faint eye lights, and said: “I want to go to Nightmare”.
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Left stranded in a dying AU by his teammates Blue is left with an important decision to make about his future. Who knows if he made the right one...
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Somewhere, somehow, they knew everything would be okay. No matter what, they would live. No matter what, there was a chance at happiness.
AKA
Random lab experiment with a box of crayons and little to no knowledge of the outside world manages to stumble upon the skeleton crew.
Series
- Part 1 of The same, despite everything
- Part 1 of Monotony
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Ebott was a city that promised a fresh start after breaking all ties with your family. It still is, almost a decade later, as you find yourself having to land on your feet again after a particularly heart wrenching breakup. But you’ll pull yourself up, always have, unexpectedly helped along the way by a gang of skeleton Monsters who are no strangers to the pitfalls of negativity.
A non-linear short story collection about our reader-insert Addison and the bad guy bone-heads that have taken up residence in her life.
Now with a table of contents!
Series
- Part 1 of Those Lost & Thrown Away
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You’re not sure how you fell into the anti-void but all you want to do is go home. Can you find it in a multiverse of infinite realities? Do you still belong there?
Maybe accepting help from this group of weird skeletons was a bad idea.
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What if the Underground started glitching? What if whenever two parallel Timelines, one Undertale, another an Alternate Timeline, Reset at the same time, a bit of the Alternate Timeline leaked into Undertale? What if there were side effects of this happening, like nightmares each time a synchronized Reset occurred? And what if Sans was effected worse than the others with the effects much more severe and some other effects others don't have? What if there were three Alternate Timelines parallel to Undertale, and what if those Alternate Timelines just so happened to be Dusttale, Horrortale, and Something New (AKA Killertale)?
Discord server: https://discord.gg/wQfvxyEuvj
Tumblr in case you guys want to make fanart: https://www. /werecat1234
Series
- Part 1 of Werecat's UTAU Megaverse
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Scythe’s Guide To Surviving In The Multiverse by MeralAce
Fandoms: Undertale (Video Game)
22 Jan 2025
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A Sans loses his AU after some traumatic experiences caused by a murderous child.
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Mirror of My SOUL by mellybabbles, Mystic_Silverlace
Fandoms: Undertale (Video Game), How to Train Your Dragon (Movies)
24 Dec 2024
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It’s easy to slip into the mindset that the Protecter of AU’s would know all AU’s.
Until he doesn’t.
This is a tale of the unknown, even to the most powerful beings.