Undertale au stuff
181 stories
Fallen Angel (Gaster x reader) OLD by Feniksiara
Feniksiara
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OLD AND BADLY WRITTEN THE REWRITE IS POSTED ALREADY DISCLAIMER: The god figure created in this fanfic is purely fictional. He is purposefully made to be prideful and cruel and is not supposed to represent any god. I am religious myself and I did not intend to attack anyones believes with this book. An angel. Sign of hope for humans, yet a nightmare for monsters. Powerful, skilled and...beautiful. But what happens when one rebels against the cruelty towards monsters? What happens when she's banished to the underground, only with wings as a painful reminder of who she once was. What if she's found by the Royal Scientist? What if the nightmare every monster is scared about, is just as broken as they are? And what if she'd find something she would never imagine she'd find in the underground...love? *Cover edited by me. The pictures used in the story belong to their original creators. If any of them aren't okay with them being used, I'll take them down* Started: 21.12.2018 Ended: 22.08.2021 09.03.2019-Number 1 in gaster! 07.02.2020- Number 7 in undertale! 25.02.2020- Number 4 in undertale! 15.04.2020- Number 1 in undertale! 11.10.2020- Number 1 in papyrus! 03.06.2021- Number 80 in fanfiction!
Your Odd Neighbor (Horror Sans x Reader) by OreoDaSkeleton
OreoDaSkeleton
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Y/N's best friend Blueberry (also known as Underswap Sans) invited them to move into the shared/connected apartment next door. They could hang out all the time! It's an awesome opportunity and the chances of it happening again are slim. Being closer to friends means a lot, especially in this tough life on the surface. Blue has introduced Y/N to other Sanses before, and they've never had any issues with them. Even so, what happens when they find out that Blueberry now has a very creepy one as a roommate? His cracked-open skull and unclear motives for being here are a major concern. Still, it's not as freaky as the stranger's ghostly appearances and obnoxious actions. Blue says "he's just misunderstood." Should Y/N follow their conscience, warn Blue and run? Or listen to Blueberry's optimistic advice, and befriend their new neighbor? Hello! owo ... Undertale aus and art presented in this book are not mine. However, the story is 100% my work! I hope you enjoy it!
We Speak In Hands (Gaster x Female!Reader) by OreoDaSkeleton
OreoDaSkeleton
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Gaster is the current royal scientist, set with a mission to break the barrier and free monster-kind from their underground prison. His loyalty and persistence to the task is clear, since he'll make whatever sacrifice necessary to complete it. However, even a perfectionist can be blind to some of their own flaws. Gaster has a habit of pushing things or himself too far. An accident occurs in the lab. Whilst trying to save him; one of his lab assistants, Y/N, gets injured. Burdening himself with even more pressure and guilt to fix it, Gaster thinks that doing all of her work for her will cover up the incident. Still, the sad reality is that the damage can't be undone. Well, Gaster ends up spending more and more time with her. As a result, both of them gain an entirely new perspective of the other, they aren't just another monster in a lab coat anymore. Hey! It's Oreo aka Writer~San! Undertale, it's characters, and it's fanart do not belong to me. However, the story does!!! I hope you enjoy it! (^w^)~
The Ghost Above Me (Gaster x Reader) by xsfolia
xsfolia
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Even though the Underground is now empty, except for some people, you still stupidly managed to fall in the once prison for monsters. Who knew you would get away from the prison with someone following you behind your back? Who would have known an echo flower would have revealed too many things? Who would have known you'd fall in love again? Words count: 55.608
A Rip Between Universes || Every Sans AU x Reader by Kevins_Kry
Kevins_Kry
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"Don't you know greet a new pal?"~Sans "Your gonna have a bad time..."~Underfell Sans "...Hi there, kid..."~ Aftertale Sans "Hello there new buddy!"~ Underswap Sans "Hello human, are you real?" ~ Science Sans "Wow a kid in space." ~ Outertale Sans "What up dawg." ~ Underfresh Sans (i had to...) "You dont belong here..." ~ Reapertale Sans "I'll help you!" ~ Inktale Sans "You're annoying..." ~ Errortale Sans 'Why... What? I... B-but...' "SANS HELP ME PLEASE!" 8 voices say at the same time, can you handle warping in each alternate universe with different versions of the love of the love of your life?
Hidden for so Long (Sans AU x Reader) {Remake} by RandomWriter-Chan
RandomWriter-Chan
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Long ago, two races ruled the Earth: HUMANS and MONSTERS. One day, war broke out between the two races. After a long battle, the humans... wait no, the monsters were victorious. They sealed the humans underground with a magic spell. The humans were the ones stuck in the underground but there was a special human, (Y/N) (L/N). Like any other human there, she lived a normal life, making mistakes, having her good and bad moments, and all of that. Her universe was different from the other alternate universes, but it still had its similarities. The Guardian of the AUs, Ink, had never seen her universe until Dream caught noticed of the universe. And with that, Ink, Dream, and fellow other Sanses went to venture on into her universe.... (Remake; V.2)
I didn't sign up for that shit by puddle_of_creativity
puddle_of_creativity
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If someone had told the Bad Sanses a week ago that they would not only have an unwanted vacation but would also have turned into children, they would have dusted them off without hesitation. But now? They just wonder who they pissed off to endure this fate. Or: Nightmares gang gets the right body for their behavior and is delighted with a terrible babysitter. [Besides my Ocs, I don't own any of the characters. Cover Pic was made by ShironuSins on Twitter]
An Angel Sent From Above ( (Y/N) x Bad Sanses) (Discontinued) by Lilyflows4764
Lilyflows4764
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This is a story about (Y/N) that is a sweetheart angel that was sent from heaven to help those that are in need. She is quite caring, loving and gentle so it's no wonder why the angels loved her. Anyways, (Y/N) is sent from above to not only help the multiverse but also to help the Bad Sanses, interested?, read to find out. (FYI I don't own Undertale or the characters used in the story apart from Audrey, Adelina and Analia and the main character that I've haven't found the name for so I left the name choices for the viewers, you can change the characters look if you want but anyways. I will give credit to the characters I've used in the story to the actual creators, the only thing I own is the storyline and the characters I've mention, anyways hope you enjoy.) P.s I've changed (Y/N)s look and the cover page of the story, just saying for those that have seen the original page and unfortunately, I'm discontinuing this story, I'm sorry about it.
Au!Sans' X Resurrected!Skeleton!Monster!reader X Au Papyrus'(Platonic){On Hold} by FictionalShippinBean
FictionalShippinBean
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Book cover by @Sushidoggo What happens when an Undertale fan dies due to a truck crashing into her house and is Resurrected into the Undertale world as a skeleton monster with other au Sanses and Au Papyrus'? Read to find out uwu
|*|from my soul to the multiverse |*| by Ethana147
Ethana147
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(y/n) a tech-genious that loves puns and music and is athletic has not so recently started over fangirl on this fandom of the undertales Au's, and as the loving undertale loving tech-genious she is, she gets fucking sent to that world, or well multiverse so to say. ⚠ ✏ 💘 ⚠ ✏ 💘 I don't own anything but you and the story plot