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197 Stories

  • Gaster!Sans X Reader by ZeldaTheDragonborn
    ZeldaTheDragonborn
    • WpView
      Reads 1,458
    • WpPart
      Parts 8
    After Chara helped guide Frisk through the underground, she had freed everyone. But Chara wanted a genocide run. The underground was reset and Frisk kept fighting Chara, getting a neutral run. But this time, sans was different than his usual self. Sorry if its not too good, i dont write well. Im happy to take any story plot changes and will make some OC people if you guys want. Maybe a lemon will be in here, but we'll see....
  • You Captured These...? [Echofell G!sans x reader Fanfiction] by Noodles_core
    Noodles_core
    • WpView
      Reads 267
    • WpPart
      Parts 5
    (Y/N) is a school photographer at their school, she's a loner. she's always being bullied and insulted for something that they didn't know about her. but what will happen if someone understands her situations too? find out and seek (Y/N)'s adventure inside the book! only the strong ones pass, the chickens... are losers. see you soon (Y/N)~... story by: noodle's_core [p.s: noodle didn't made echofell, she's just a fan of it] credits to the owner of the AU and the owner of the cover ^^
  • Undertale One-Shots by FallingApartSkeleton
    FallingApartSkeleton
    • WpView
      Reads 68
    • WpPart
      Parts 2
    TEM HAZ ALL TEH HOOMAN SOULZ! So, will be taking requests for these, BUT! I will not be doing lemons, mainly because I find writing them to be 'hard'. Lol. Anyway, imagination has no limit to all the Sans..es? Sanses? Sans'? No idea. They're just little fluffy moments I imagine. Now, if you excuse me, I will be attending to the hospital. My appendix hurts. I'd say a skeleton joke, but I don't have the 'guts' to. Read this book for Temmie to get higher education.
  • A Love Song G!Sans x Reader by exellentlexilou1
    exellentlexilou1
    • WpView
      Reads 885
    • WpPart
      Parts 10
    Y/N She was loving Kind Caring Shes only 18 years old Her parents were killed when she was only 12 and after that she only had her little brother to love in the horrid world of war. (READ THE STORY TO SEE MORE)
  • Borderline  by sansruss
    sansruss
    • WpView
      Reads 264
    • WpPart
      Parts 9
    You lived with toriel ,sans ,papyrus,asgore,udyne, Alphs,mettaton,and frisk.all of you enjoyed living together until someone killed them .Before sans died he gave you and Fisk a note where gaster lives (whoever that is)
  • enemies to lovers??🔪🐼💗💗💗😻💎  by reapertalefrisk
    reapertalefrisk
    • WpView
      Reads 11
    • WpPart
      Parts 1
    enemies turn to lovers,WHY?? Find out when you read the book.mwahahahahahahahahahah 😮😮 ☺☺🐼🔪♥♥♥♥♥♥♥♥♥💎💎💎💎💎💎💎💎🔪🔪🔪😐😐🔪🔪🔪🔪🔪🔪🔪 ILOVEEMOJIS ...
  • Not too bonely anymore.... (Gaster! Sans X Reader) by saaaaaaaaaans
    saaaaaaaaaans
    • WpView
      Reads 1,392
    • WpPart
      Parts 3
    You run away from your abusive alcoholic mother to find a safer home. Taking a rest in an Alleyway, someone finds you, and tries a humongous amount of times to flirt successfully with you. You try running away, only to be thrown over their shoulder and taken somewhere new.
  • Love has no bounds GxEverthing by APHMULFAN2006
    APHMULFAN2006
    • WpView
      Reads 44
    • WpPart
      Parts 2
    IDK! :D
  • My Art Book.. Yeah. by HoodJester
    HoodJester
    • WpView
      Reads 414
    • WpPart
      Parts 9
    My art book containing RWBY, Undertale, OC, and many other random shennanigans.
  • Gaster!Sans X Neko!Reader by jasperthedestroyed
    jasperthedestroyed
    • WpView
      Reads 1,345
    • WpPart
      Parts 11
    Story info: It has been a few weeks since the monsters where freed. (Y/n) is a shy neko girl. Another war broke out and many nekos and humans where killed. You are the last Neko there is. Sorry if it sucks its my first book please, go easy on me school will make it harder for me to update a lot. Short chapters may be a possibility.
  • Hearts Core (Gaster!Sans x Frisk)  by Onemoonshade
    Onemoonshade
    • WpView
      Reads 86
    • WpPart
      Parts 2
    Frisk and G broke up a month ago, now she wants him back, who has a crush on her sister (Y/N) a anti-social lesbian, she doesn't really care but hate getting affection by him. (Y/N) does her part as the older sister and helped Frisk get G back.
  • Labyrinth by StarRoseColors
    StarRoseColors
    • WpView
      Reads 18,974
    • WpPart
      Parts 23
    It has been a year since demigod Frisk rescued her father from the Underworld. Now, a new quest has arisen, and this time with a question: What really happened on the day that G tried to steal her?
  • The Haunt (G.sans X Frisk) by Oumimi-Chan666
    Oumimi-Chan666
    • WpView
      Reads 6,157
    • WpPart
      Parts 18
    In this AU we have a playboy tsundere version of gaster sans and a naive version of frisk. lmao the perfect combination the story will go a little bit like this : While heading to her First Job Interview, Frisk dreemur met an anonymous skeleton that will change her life dramatically as he's showing his insane personality bit by bit. Till she discoveres that he's a total dominant sex player. The fucking end uwu ...I'm just kidding I'll add more xd I will mostly upload when I can I have free time atm so I'll launch the first 5 chapters this week.
  • Promise by bongobongos
    bongobongos
    • WpView
      Reads 27
    • WpPart
      Parts 1
    She was ready to give in to her thoughts, but Sans didn't want to let her go ever. Not like this. It's never easy to win a battle where you're struggling to keep your own very self alive. And so, he wanted to give his all to support her through it all. Even if it felt like things weren't getting better for a while. Basically, angst and comfort with reader + Sans. Written in 3rd person's point of view. *Sans in this fic is heavily implied to be Gaster!Sans/Echotale Sans, but you can switch out his nicknames for it to be any AU Sans. *Reader uses she/her pronouns but can be of any gender up to the reader's interpretation. *Sans/Gaster!Sans does not belong to me :) I just write. Cover art by elicitsins on tumblr.
  • A Forgotten Echo by MCstar13
    MCstar13
    • WpView
      Reads 100
    • WpPart
      Parts 4
    A girl with a very unique name enters a city of monsters. War between humans an monsters has started after the humans killed Frisk. This girl, her name is Fallen Demon, and she has a cold when she enters the city and begins living in a pharmacy. Monsters dont use it, and with no lower windows, it makes a great home. She takes madication to help her get better, and ventures out at night to get things to entertain herself, like books and food that isnt just snacks. She soon begins to be known amongst the monsters as the demon thief, which she finds funny due to her name. Gaster!Sans is sent after her, to find her and capture her alive, by Undyne. He goes to the abandoned pharmacy, and Fallen having heard him enter goes to hide. Sans stakes the place out, finding signs of someone living there. He checks everywhere, and is about to leave until he hears a cough. Of course he finds her. But things soon take a turn for the worst and it becomes uncertain as to whether the girl known as Fallen Demon will survive.
  • Wishing For Something Different by BloodLustStrider
    BloodLustStrider
    • WpView
      Reads 15
    • WpPart
      Parts 2
    A shy girl with family problems and no friends by a certain accident or fate has the chance to change her life. What will she do with it?
  • Sans AUs x Reader [ONESHOTS & LEMON] by CHEMICALHEAD36
    CHEMICALHEAD36
    • WpView
      Reads 9
    • WpPart
      Parts 1
    Well, I see a lot of these and I decided to make one. The cover may or may not show but who gives a 💩. Give me as many requests as you can (even if they are the same character but different scenarios plz). This is CHEMICALHEAD signing off :3
  • Your Majesty |G!Sans x Frisk|  by Deadly_Writers_clone
    Deadly_Writers_clone
    • WpView
      Reads 5,528
    • WpPart
      Parts 11
    WELLLLLLLLLP! I was listening to a song (I'll probably add it in the story) and I'm like "Oh hey what if this were Some Characters feelings?" And so I uh I'm gonna right a story bout it •_• -_- "Your Majesty" is all I can really give out I suck at these but yeah :p
  • [[DISCONTINUED]] There's Never Enough Of You 《Gaster!Sans X Reader X Grillby》 by BRAINLESSBEING
    BRAINLESSBEING
    • WpView
      Reads 46,171
    • WpPart
      Parts 13
    NOTE: THIS STORY IS DISCONTINUED [Drawing on Cover by: SmokyJack on Deviant Art.] You clumsily bumped into someone on your way home from work, apologising as their papers from their arms and scatter along the ground. Feeling horrible, you kneeled down to pick their belongings up for them. As you handed the pages back to them, you realised that they were a monster, which spooked you a little since they haven't been on the surface for that long, and they were extremely rare to see on a daily basis...