Underfellsans Stories

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243 Stories

  • Red Mask by SpiritWolfNura
    SpiritWolfNura
    • WpView
      Reads 324
    • WpPart
      Parts 10
    Underfell is a dark and dangerous place filled with murder in violence, and Sans and Papyrus are the pinochle of it all. So nobody would ever suspect Sans to come back after a lost bet. Maybe you haven't seen all of what's under Red's mask, huh? Request for Icecream_Shipper
  • Little soul, big bite by Radskull86
    Radskull86
    • WpView
      Reads 56
    • WpPart
      Parts 6
    FIRST FIC, plz leave help in comments! You take in a bitty, user is female First story, not turning on mature since it's just cussing and maybe some violence but probably not This is a you pov btw!
  • Home Is Where The Heart Is by lunarmochiii
    lunarmochiii
    • WpView
      Reads 4,953
    • WpPart
      Parts 7
    "Can I really just stay here?" Underfell Sans, "Red," just wanted to get home. Using a shortcut, he expected to step through and be at the door to his house. Instead, he finds himself in the forests of Snowdin. He makes his way home but it's not his 'home' that he ends up in.
  • Amigos con Boner-Fits by TheCrunchyCrew
    TheCrunchyCrew
    • WpView
      Reads 59
    • WpPart
      Parts 2
    Sans y Red son compañeros de cuarto, es decir, hasta que Red quiera mudarse debido a las travesuras de Sans y sus travesuras traviesas. Sans se sorprende al darse cuenta de que no quiere verlo irse.Una historia sobre amigos, ganas, apodos juguetones y un gran enamoramiento que parece interponerse en el camino.
  • I love you a skeleTON ( sans x chubby reader) (discontinued! Sorry!) by SierraColor
    SierraColor
    • WpView
      Reads 184,208
    • WpPart
      Parts 31
    Mainly what the title says. Lots of Sans, ton of SANS, Undertale sans, undefell sans, ALL THE SANS. BUT WITH A CHUBBY READER. WHHHAAAAT I KNOOOOW. READ FOR THE FLUFF THE CUTE FLUFF. (BUT IF YOU WANT SOME LEMONS HONEY, YOU GONNA HAVE TO WAIT TILL I GET THOSE IN ANOTHER BOOK. ;) ) Also, there will be a request chapter, I won't take all requests, but I will take some. ALSO CAN I JUST THANK YOU GUYS FOR 23k?!! LIKE WHAT?!! (Tbh if we get to 25k I might just continue that little one shot y'all keep requesting for me to continue to there's that.)
  • The 7 Stages of Bitty Adoption: A Bitty Bones Fan Fiction  by HxnnybeeX3
    HxnnybeeX3
    • WpView
      Reads 54
    • WpPart
      Parts 2
    Y/n has been having a hard time with their mental health. After having many attempts to take their life, they are suggested an emotional support pet. Except this isn't any old pet. (This story is literally just for me but if other people read it, I hope you likey) Cover is drawn by me.
  • Honey To Your Mustard by Pundertale-Sans
    Pundertale-Sans
    • WpView
      Reads 824
    • WpPart
      Parts 2
    A little fluff based drabble series I will make about HoneyMustard (Underswap Papyrus x Underfell Sans). I may occasionally take in requests and headcanons for it. Hope you enjoy!
  • ●~My Prisoner~● [UF!Papyrus x Fem!Reader] by xxAstrixZxx
    xxAstrixZxx
    • WpView
      Reads 537,636
    • WpPart
      Parts 47
    [Completed] [[Lemon and Swear Warning]] [2019 Jan Note: This book dates back to 2017, where my grammar and spelling checks weren't efficient due to me being lazy. So I apologize for typos if any.] ---------------------------------------------------------------------------- How much more could a young girl possibly take? In a world where humans are brutal, one girl couldn't stand through the odds. She was at her tipping point, an all time low. Her family was horrible, mistreating and abusive, where she just couldn't take it anymore, she had to jump. Unfortunately, Death gave her a chance to live on, and with that brought new enemies and new friends. How will the tables turn as she meets un-forseen creatures in this new place: The Underground? And who would be her guardian angel in such hellish conditions? ---------------------------------------------------------------------------- Highest Rankings: - 1st in Underfell - 1st in UnderfellPapyrus - 1st in UndertaleAU [Undertale belongs to toby fox. The AU belongs to it's creator. The images belong to their original artists. I only own the plot of my story] Story by me Papyrus from Undertale AU, Images and Music in the story belongs to their rightful owners. [ 3/1/2017 - 20/2/2017 ]
  • The BONE ZONE - sanscest/fontcest story book by UndertailFanfics
    UndertailFanfics
    • WpView
      Reads 24,734
    • WpPart
      Parts 7
    The bone zone.
  • Dark Heart sweetheart by wolfgirl2020
    wolfgirl2020
    • WpView
      Reads 252
    • WpPart
      Parts 10
    a under fell x reader love story!!! I own no art or characters. credits to all artists and authors of underfell undertake owned by Toby fox PG 13 "Why do you act like this to me? Hate me one minute then want to be my friend." "Because Y/n I .... I like you. "
  • UnderLife by InkSans1InkTale
    InkSans1InkTale
    • WpView
      Reads 9
    • WpPart
      Parts 1
    Hola! Soy Ink, siempre me han gustado todos los AUs, pero como seria si unimos todos?
  • Family Secrets {a MobFell/MafiaFell Fic} by mewmewbomb
    mewmewbomb
    • WpView
      Reads 636
    • WpPart
      Parts 4
    Adrienne had been staying with the Gaster brothers long enough to learn about the business they were in, and she'd grown used to it. Just when she thought she knew everything there was to know about them, fate proved her wrong ***STORY COVER ART IS BY CYBERKITTY117 ON DEVIANTART*** ((Let me know what you think and if I should add more to the story! I love writing, but sometimes I need a second opinion or a gentle push to do it))
  • Fell Sans X Reader {lemon} by Und3r_F3ll
    Und3r_F3ll
    • WpView
      Reads 331
    • WpPart
      Parts 1
    A bright light? Was I dead? So it finally happened....this is what death feels like.... Why is it so cold? Trees.....Trees.........
  • Can You Show Me Love ( Underfell Sans X Fawn ) by FanficGeek42
    FanficGeek42
    • WpView
      Reads 0
    • WpPart
      Parts 1
    A love story between Underfell Sans and my OC Fawn
  • ... by Infernapefan2020
    15
    ...
    Infernapefan2020
    • WpView
      Reads 130,355
    • WpPart
      Parts 13
  • a golden cage is still a cage... (FINISHED)  by apparentlyiwr1te
    apparentlyiwr1te
    • WpView
      Reads 24,819
    • WpPart
      Parts 21
    Trapped. That was the best way to describe how Fell felt. Trapped. A brother who abused him. And friends who didn't care. Even people he thought he could trust turned out to be using him. If there was a way to escape, he would. And when the opportunity arises... Well, let's just say things get better for him. But for how long?
  • Blooming By || AU Sans x Reader by thatonesharkplushie
    thatonesharkplushie
    • WpView
      Reads 171
    • WpPart
      Parts 5
    ⚠️ Warning! ⚠️ In this story, the Y/N experiences depression. If you are not in the right headspace, please don't read this. I will also add warnings for if a chapter goes deep into her mind. *Reader goes by she/her* Your life, for the past few years, has been bland. You work from home, so you rarely meet people. Except when you shop. Even then, you barely have contact. Probably because your house is well known for it's 'history', so to speak. Your only company in this lonely life of yours is your dog and a few plants. But, one morning, universes shall meet and surprises will show themselves on both sides. *Undertale belongs to Toby Fox *Each AU belongs to their respective owners
  • Six Skeletons One Teen by Fidelibus
    Fidelibus
    • WpView
      Reads 4,778
    • WpPart
      Parts 4
    After you ran away from home, you sneak into a manor which unbeknownst to you, was home to six skeletons. They agree to take you in for free, one one condition: You stay with them until your 18th birthday. Now you're working for six skeletons as a maid, all while going through puberty. This is gonna be one heck of a ride. (This is a parody to RaccoonSinQueen's Six Skeletons One Maid story, found on AO3. If you haven't read it yet, go check it out!)