sad undertale/AU's
122 stories
A Totally Fantastic Guide To Vigilantism {Sanscest Story} by Apathetic_Blossom
Apathetic_Blossom
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The world has always dealt in absolutes. It was absolute when it took Error's parents away from him, leaving behind three siblings with nothing but each other to rely on. It was absolute when it coaxed him to become something greater than himself, fueled by the pain and desire to right society's wrongs. It was absolute, when it decided that Error was the king in life's extravagant game of chess. Or, Error is a friendly neighborhood vigilante until he's not. ⚠️Disclaimers⚠️ -Depictions of blood/violence -Torture -Death (no mc deaths though) -Kidnapping (Main things to look out for, warnings will be included on chapters they pertain to.)
Sans AU Oneshots (+18) by LuCkYcAt8D
LuCkYcAt8D
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Smut shots, only for +18, of our favorite skeletons.
The King's Queen (Nightmare Sans x Reader) by ReapingZen
ReapingZen
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PLEASE READ BEFORE GETTING INTO THE STORY Description: Your name is (Y/n) and you are originally from an au called Dreamtale! Your life hadn't been the easiest however, but you were quick to always move forward despite this... Before Nightmare had become corrupted, you were his best friend and lover. You kept him from his breaking point, you maintained his sanity and most importantly... returned his love. One thing that is definitely important about yourself is that you are a selective mute... And your only desired partner for conversation is the King of Negativity himself... But what will happen once the true evil lurking within your lover drowns out whatever light he had left? What will happen when you discover that the Nightmare you knew was replaced by a monster that still somehow holds love for you? "And even with the evil finally in control of Nightmare, if both his sinister side and his old self agreed on something- then it would always be his priority... They both love her." This is practically my first story that I have ever decided to share online. It is quite a terrifying experience for me, so I hope that anyone who decides to read this will enjoy it. Anyway, I should probably inform my readers about a few things. First off, my primary language is not English, however, I will still be making an effort with my grammar! Second off, I will try and update this as frequently as possible... Even though I can get somewhat shy or concerned about how my work goes. Otherwise, all you will need to know is this: (Y/n): Your name (F/n): Friend name (E/c): Eye color (H/l): Hair Length (H/c): Hair color (S/c): Skin color (F/c): Favorite color Some things I will likely determine for the reader, but what is posted above will be the basics. Please also note that this story may contain some content that would be best for more mature audiences. Also, the cover image belongs to me, please do not use it without permission or steal it.
Goop and String by MotherVoid315
MotherVoid315
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This is a story about how Nightmare and Error became a thing! Ink drags Error to a party, but leaves him to go off with Dream. Error is left alone in a loud and crowded party with no comfort. After running outside because of a panic attack, a familiar skeleton steps in to comfort him. Sorry! no more spoilers!!!
Being a Diamond by Nanachi8
Nanachi8
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Error was just enjoying a day out with himself. Nobody bugging him or fighting for the rights of the universe. And he did not even need to do anything as he was content with his destruction left in his wake from trying to save the multiverse. But, sadly, our glitchy skeleton was about to experience an adventure as he got to experience another universe. But he really does not know what to do with the attention. (I got this idea from somewhere but I could not remember where! It might be from someone I'm following though.)
I'm Not Normal! (Undertale) by looloo900
looloo900
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The year is 201X, monsters who once roamed the surface have been banished again after 1 year, no more magic remains from the monsters, except for one child. Georgia Corona. WD Gaster's daughter is the only human with both a human and monster soul, as well as being the only human to teleport, summon bones, blasters and heal monster souls. Georgia is not an ordinary teenager, she doesn't spend time revising, but visiting the underground to see her father, helping him with scientific projects. As other teens would be partying, Georgia would be teaching herself how to control her powers when she's in danger to prevent anyone accidently getting hit by a bone or a Blaster. Georgia has normal, human flesh hands, apart from one minor detail... They have holes in them. One gift from her father is convincing full human hand looking gloves. She doesn't take them off. As the shy teen moves further into High School, people questioning her 'hands'. Would she crumble under pressure and reveal? Or turn dark to keep her secret hidden? (I do not own Undertale - Toby Fox does).
Evolution of a Reincarnation  by Lunazul3000
Lunazul3000
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I survived, then lost.* I lived and loved.* I lost, but won.* I survived and loved.* I lost, but survived.* I lived, but was lost.* Can I find myself again? I was reborn as Prime Undertale Sans, but this universe's version is a bit different. I had finally managed to get my happy ending. But, with the introduction of a PLAYER, things start to fall apart. Can I make it through the hurtles my new path will bring? Why did I have to become a Geno? Is that Fate? Ugh, guess I'm Error now. Where's Reaper when I need a cuddle? Hit 3 in #forcedgod 3 in #genosans 9/16/22 6 in #reapertale 10/29/22 5 in #geno 9/15/22 1 in #crosssans 9/11/22 2 in #errorsans 9/20/22 2 in #sans 9/20/22 2 in #inksans 9/20/22 1 in # nightmaresans 9/22/22 1 in #dreamsans 10/2/22 1 in #undertale 9/28/22 !!!!!!!! 5 in #blueberrysans 7 in #reapersans 12/2/22 3 in #fgod 12/2/22 1 in #DestructiveDeath 12/2/22 Check out my other books! May contain mature language, violence, torture, sexual, self-harm, and suicidal content. May not be suitable for all viewers. Inspired by harrish6, pastagod_italy, nellie sheerin, and Firehedgehog. I do not own Undertale, Reapertale, or Dreamtale. All non-oc characters belong to their respective creators.
I'm a Sans ( au sans x reader x au papyrus ) by KittycatTDH
KittycatTDH
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This isn't a typical sans x reader(now papyrus x reader too). It's got more than that, well at least a different plot device first chapters will be about, just you(but it'll be good, I think so)and it's about you dear reader, you are now reborn as a Sans of a different au, but you don't have time to marvel how you're been reborn as your favorite character, because if you want to live you better focus because unlike frisk you're not coming back a second time when you die. (Short, and I mean short chapter, but this will ensure I can post more -w-) (Edit: this is context of your previous life is that you are originally female, aged 15, you had died during a car accident, you were sleeping in the back of the car, while you had a road trip to visit your family in Canada. The car had driven off the road because of black ice your father did not see in the dark of night. You heard the sound of your fathers scream then lead by your mothers then little brother's scream. You banged your head in the chair in front of you making you pass out, and when you open your eyes you had found yourself be popped out, but you didn't know that at the time. Art always be done by me. Edit: discontinued
Friends with Boner-fits [A Kustard Fanfiction] by TheCrunchyCrew
TheCrunchyCrew
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Sans and Red are roommates- that is, until Red wants to move due to Sans' shenanigans and mischievous pullings. Sans is struck with the realization that he doesn't want to see him go. A story about friends, pining, playful nicknames and a big fat crush that seems to get in the way.
~ The Glitch by My Side ~ [COMPLETE ✔] by tRaSh_4U
tRaSh_4U
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When Fresh goes AU to AU and finds this one AU that is empty, with only one person living in it all, they become familiar with each other, as a bond grows Hahaha =w= *Has Touched #1 in Fresh* *Has Touched #1 in ErrorFresh* *Has Touched #1 in Freshsans*