Beast's Within Us- an Undrtale AU
- Reads 5
- Votes 1
- Parts 1
(AU MADE BY ME!!!!) (( I don't think there is an AU like this anyways))
Monsters have been living on the surface for over 12 years now. Everything has been fine until now. Monsters and Humans are disappearing left and right. Human bodies are being found everywhere, torn apart like something had eaten them. Strange creatures are being seen running around like wild animals, attacking Humans and Monsters for no reason. Now Sans has gone missing as well and his family and friends are all in for a surprise on what happened to him.
All Rights Reserved
Join the largest storytelling communityGet personalized story recommendations, save your favourites to your library, and comment and vote to grow your community.
You may also like
Sans x Reader | Empire
(Adult Lazarus here - I wrote this when I was like 14 years old. Forgive me.) Sometimes life gets to the point where you feel like you're a paper airplane. One minute you're soaring, feeling as if nothing could ever get you down. But then the next thing you know, you're falling slowly and nothing that you can do can possibly help you. You end up falling and crashing into whatever's below you and the heights that you had once reached. Then it starts all over again - becoming a vicious cycle. Someone picks you back up and throws you, making you soar yet again. But then they watch as you fall, not stopping you or saving you from the hard impact you meet with the ground. The process repeats itself over and over and there's no way you can stop it. After all, you're made of paper - you're delicate, fragile. You're thrown, you soar, you fall, you're picked back up, then it happens all over again until you break - becoming bent and broken from your head to your toes. Until you crash so much that you're ruined - then you're thrown away. At those times, you know that you at least have one person who will fix you. He calls you his queen, as any king would whilst in power of the empire you both strive to build together. This person is your home - your empire. - #6 in Quotes [03.12.21] - #2 in Sans [10.21.21] - Undertale does not belong to me. - Artwork/Music does not belong to me. - Also, I apologize for any of the spelling errors. I type quickly and so I do not really realize if I misspell a word or two. Sometimes I do go back and edit out the mistakes with spelling and such.Complete
This life as Error Sans.
⪼A life where our beloved [Reader/REDACTED] died a very.. 'Fun' death. ⪼upon realizing their death, they'd realize that they reincarnated into error sans, a character they used to know as a kid. ⪼[REDACTED] Gained some friends that were on his side along the way, siding with the bad side of the AU's proudly. ⪼would [REDACTED] find out new things, new people, and keep up with their act? ⪼("SkReW yOu gOd!!1!".... huh?) ____________________________ ⚠︎{This story was made as a joke at first, the writing improves as time goes on. This story also contains swear words, No ships, And some grammar mistakes}⚠︎ ⪼(Cover made by me.) ____________________________ ⪼23/1/24 - #1 in Ink ⪼23/1/24 - #1 in Balance ⪼23/1/24 - #1 in Noships ⪼25/2/24 - #1 in Dreamsans ≫08/3/24 - #1 in Multiverse ⪼18/3/24 - #1 in Ausanses ≫29/3/24 - #1 in Inksans ≫30/3/24 - #1 in Undertale ≫03/4/24 - #1 in Reader ≫17/5/24 - #1 in Underverse ⪼24/6/24 - #1 in ErrorSans
You're PURRfect For Me{Sans X Neko! Reader Book One in the Save File series}
Its been a year since Frisk and their gang freed the underground. Humans got used to it but youve never met one. You've actually never gone outside your house. Your..your not exactaly a human nor a monster. With cat ears and cat tail people call you a monster, others call you a 'it'. Your friend mainly takes you stuff you need because you don't want to go out. Well you two get into a heated argument and she doesn't bring you your supplies. Your forced to go out and you meet an...interesting skeleton and you two become friends. What now?Complete
Reconciliatale Story
An Undertale AU where Monsters won the war instead of Humans. Both continue to live in peace. Atleast, that is to be believed. In current time, a Human enrolls into a college where she makes frineds of Monsters. They are friendly and strong. But they hold a sad and traumatic past. How will she experience her college life? Credits to the person named Parley for the title design
Not like them ~ A Sans x Reader ~
Disclaimer: this story was written when I was very young and didn't know how to write, apologies for poor writing My name is Y/n L/n. About two years ago monsters had returned to the surface. Many people don't like them back, but I'm not like that. I secretly support them, I secretly do because my family doesn't approve of monsters. But what happens when I meet a monster that changes everything?Complete
Undertale:extended genocide (discontinued)
Undertale AU about sans escaping to the surface on the 100th genocide run.Complete
Home (bad sanses x child reader)
You were an average kid, somewhat having a older mind than most of your classmates. you had always been into the undertale fandom, and even knew almost everything about the aus and soul colors. while what seemed like a normal day at school quickly turned around after a huge bang struck the class room next door. in this story y/n is nonbinary and 12-16 years old. But more interpreted as 14 I post a new chapter every 3 day and 5 days at the maximum. WARNING: this story will mention some forms of slight emotional harm. And Sexual abuse. Readers be safe. Please if you are in any danger, contact someone. You are not alone. With that aside enjoy the story . This story is finished as of September 1 2022, I encourage you to read my other story "Our Disturbing Love" And in the next month or couple weeks I plan on creating another bad sanses x reader.Complete
Bloodfall (An Undertale AU)
Ever since the death of his younger brother. Things have gone downhill in the surface world for Sans. Alphys died a few months after Papyrus to a disease, Mettaton and Undyne, especially Undyne, had fallen into a depression. Flowey dissapeared into mt. Ebott, not to be found and Sans is fighting depression and insanity. One day, Sans discovers a suspect to his brother's death. A being that is trapping anyone who had either fallen into Mt. Ebott or stayed behind in snowdin for a while. Sans, along with Frisk and Undyne, go into the underground themselves to confront this being. They must encounter the Bloodfall that traps and kills anyone who dares pass by waterfall. (This takes place after a true pacifist run if one killed Sans in a Genocide run, but reset their game before getting to Asgore(I did this in a way to quit the Genocide route). This is if Frisk choses to do this the Pacifist way. I might make a Genocide one in Story Shorts. Also, My Sans is a human, but feel free to interprate him as a Skeleton if you ever choose to use this AU. Just credit me!)Complete
Adopted by Monsters
Hello, this is an au where the bad sanses adopt a kid which would be you ^^ only brotherly and fatherly love ^^ please enjoy this! This book was inspired by a book I read a few days ago. you were adopted by skeleton monsters let's hope you get along with them all! I hope this is rather interesting because I have never seen this concept before enjoy once again!!! all genders are welcome!!! This is a Child Reader x Bad Sanses thingy. Cover art will be uploaded soon!Complete
Undertale meets Shield
After the barrier on the Underground, the monsters come out but to only be feared by humans. They decide that they will live on MT EBOT, away from the humans so that they do not disturb them. Sans volunteered to go get everything the monsters needed when they needed it. So when a certain skeleton with pink slippers and a blue jacket makes it to the internet and catches the eye of Nick Fury as a potential threat, things get weird. (PS) I do not own Avengers, Undertale, or any of the pictures that might be posted. This is also just a continued version of the original. The link for the original is down below https://www.wattpad.com/story/194991958-avengers-undertale-crossover-skeleton-of-problems The writer for the first two chapters is @HoboBoss8111, I also got sorta lazy with the cover I also got permisson from the writerComplete
(Adult Lazarus here - I wrote this when I was like 14 years old. Forgive me.) Sometimes life gets to the point where you feel like you're a paper airplane. One minute you're soaring, feeling as if nothing could ever get you down. But then the next thing you know, you're falling slowly and nothing that you can do can possibly help you. You end up falling and crashing into whatever's below you and the heights that you had once reached. Then it starts all over again - becoming a vicious cycle. Someone picks you back up and throws you, making you soar yet again. But then they watch as you fall, not stopping you or saving you from the hard impact you meet with the ground. The process repeats itself over and over and there's no way you can stop it. After all, you're made of paper - you're delicate, fragile. You're thrown, you soar, you fall, you're picked back up, then it happens all over again until you break - becoming bent and broken from your head to your toes. Until you crash so much that you're ruined - then you're thrown away. At those times, you know that you at least have one person who will fix you. He calls you his queen, as any king would whilst in power of the empire you both strive to build together. This person is your home - your empire. - #6 in Quotes [03.12.21] - #2 in Sans [10.21.21] - Undertale does not belong to me. - Artwork/Music does not belong to me. - Also, I apologize for any of the spelling errors. I type quickly and so I do not really realize if I misspell a word or two. Sometimes I do go back and edit out the mistakes with spelling and such.
More detailsContent Guidelines