Underfellsans Stories

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244 Stories

  • Reflections. Fell! Sans x Y/N by de4dd0ll
    de4dd0ll
    • WpView
      Reads 9
    • WpPart
      Parts 2
    "Even distance itself cannot end reflection." Y/N finds an antique mirror in the middle a junk pile at a local garage sale. Sans finds one in an old antique store. Neither expected to find someone staring back at them.
  • Marked in Red, Claimed in Gold (Mafiafell Sans x Reader) by clubofsnakes
    clubofsnakes
    • WpView
      Reads 1,679
    • WpPart
      Parts 23
    The skeleton shakes his head slightly, a boney hand sliding across his skull. "Ah- well- that wasn't free Doll, 'course you'll have to pay me for that..." He trails off, his cocky smirk ever present on his face as he looks you up and down for a mere second, "...little favor." He pinches his pointer finger and thumb together before rubbing them together. _____________________________________ (Y/N) is a bartender that was kept secret from the after hours patrons at the bar she worked at for two years. Her boss not wanting her to associate with the people that would further pull her into a world that she was scratching the surface of just by working there. But after staying just a few minutes later then she was supposed to she stands face to face with a gold toothed smartass with a devilish smirk- his red eyes trained on her every move. ______________________________________ There is cussing but let's be honest- there's cussing everywhere. Also posted on AO3 as clubofsnakes where additional chapters later on will appear there and not here. I was inspired by- @MissHoll-E-Socks with their story "Can I take you to dinner?" NONE of the art is mine.
  • Red Mask by SpiritWolfNura
    SpiritWolfNura
    • WpView
      Reads 274
    • WpPart
      Parts 9
    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
  • ACEPTACIÓN (FONCEST) by Blacknekomi
    Blacknekomi
    • WpView
      Reads 259
    • WpPart
      Parts 3
    Al final lo abandonaría, no?. Si su hermano encontraba a alguien con quien compartir sus estúpidas bromas, esa bebida amarga y su ilimitada disposición a no hacer nada...se iría de su lado. Pero el nunca llego a creer que su hermano encontraría una pareja con la cual duraría tanto...hasta ese día que los vio. Debería aceptar su relación? ***La portada no me pertenece Undertale pertenece a TobyFox
  • A Love Without the Violence (Fell!sans x reader) by BridgetMiles101
    BridgetMiles101
    • WpView
      Reads 175
    • WpPart
      Parts 7
    After a life without parents or friends. even people who CARED about you. You decide to see if the legends were true about Mt. Ebbot. It seems the legends were true. One of the monsters seems...different somehow though.. Aye! I have the biggest crush on Fell...and I had this idea for a while so...HERE WE GO
  • Honey mustard shenanigans by asterisksans
    asterisksans
    • WpView
      Reads 45
    • WpPart
      Parts 1
    because the two gay chaotic husbands get into all sorts of mischief. or angst. both? idk but it's probably going to be gay. absurdmageart on Tumblr
  • UnderFell!Sans X Reader The Dimension Swap by SpaceCrest
    SpaceCrest
    • WpView
      Reads 181,249
    • WpPart
      Parts 64
    The beginning parts are going to be like the game (Sorry if its to long!) . But then the real story begins! I hope you guys like it! You're path is NOT Genocide! ⚠️ WARNING: Swear words, Bad english, cringe(?) ⚠️ I'm rewriting it at the moment: https://www.wattpad.com/story/322973792?utm_source=ios&utm_medium=link&utm_content=share_writing&wp_page=create&wp_uname=SpaceCrest&wp_originator=16HJUmGWBAUfNXOg6h8xsF1lDIwDMrYM%2FIGoyFWuWiY0xDnTYAKkKmkVbprAKVdKal1b9U376xuZGi82MbElisZFmVd6nJU8qbVTtZwijXnkmeroGnEbxjRdRiQmp3Vh
  • Typical (An AU Sanses and Mini!Reader story) by Maroon-fiction
    Maroon-fiction
    • WpView
      Reads 176
    • WpPart
      Parts 3
    So! Basically, you are a person who came to the AU Sanses mansion (Which lived Ink, Undertale Sans (And i'll call him Classic in this story), Underfell Sans (I'll call him Fell), Underswap Sans (I'll call him Blue) and lastly, Dream Sans) and lived there for a while(?) So, You're from Undersize, and there has some races. Big, Medium, Mini, And monsters. there, Monsters was banished for the same reason as the Undertale ones, Except, the one who done it was only the medium one, the big is BIG-hearted, and, the Mini can't do anything Yes, this MAY contain an x reader. But please keep in mind that i'm not really comfortable to make that (But i'll not object to read it though) Cover by: SuperBecky On : Deviantart I found this picture at Google
  • Christmas Party Au Comics (traduccion) by AnonimaVienKhul
    AnonimaVienKhul
    • WpView
      Reads 580,098
    • WpPart
      Parts 96
    Haré la traducción de esta serie de cómics que me gustaron bastante de los mundos alternos de sans y papyrus(y Gaster) en una fiesta de navidad xD Disfruten! (?) Psst, no pidan que siga subiendo, cancelaron esta saga hace mucho xdd
  • AU Sanses x Reader Oneshots/short stories by Cherry-Poppins
    Cherry-Poppins
    • WpView
      Reads 4,062
    • WpPart
      Parts 9
    Just a bunch of oneshots and short stories that I've thought of that I never could make into full stories... Feel free to suggest ideas and stuff. STAY DETERMINED!!!
  • An Unexpected Date  by Ihaztoomanyfandoms
    Ihaztoomanyfandoms
    • WpView
      Reads 199
    • WpPart
      Parts 3
    Red needs to talk to classic,about something he has hidden for a long time.....ever since he met him.
  • Can I take you to Dinner? Mafi-fell!Sans x Reader.  [COMPLETED] by MissHoll-E-Socks
    MissHoll-E-Socks
    • WpView
      Reads 215,006
    • WpPart
      Parts 32
    "How rude, not even gonna ask for a name??" He teased. "Why are you here?" You glowered, raising the whisk. The skeleton scoffed: "Well, glad you asked sweetums! Name's Sans, Sans the skeleton." - Y/N, a ritzy waitress at Grillby's is plucked from her world of pancakes and Orange juice into the gun-slinging, smoke-breathing lap of one of the most fearsome dons in the city. Escape from him- let alone the King's Service that now hunts her down? I don't think so. **SMUT WARNING TO ALL THE UNDERAGE POTATO PATCH CHILDREN!!** - TRANSLATIONS WELCOME, JUST ASK MY PERMISSION FIRST - #1 in: sansxreader. 10th of May.
  • Russian Roulette~ {Underfell Sans M/BS} by TheBadSansesWP
    TheBadSansesWP
    • WpView
      Reads 136
    • WpPart
      Parts 2
    Admin: *Drags Fell* Come here we're doing an M/BS now! Fell: don't care about it *teleports away* Admin: *groans* I f***ing swear...I would give you a week's supply of mustard if you do it. Fell: *teleports back* really? Admin: *sighs* Yes, and I promise. Fell: *smirks* now i'm interested...
  • Away, then back again (Scifell fanfic) (((DISCONTINUED))) by VansenTheShipper
    VansenTheShipper
    • WpView
      Reads 8,275
    • WpPart
      Parts 9
    This takes place after everybody left from the Christmas party (CPAU). Sci is now sober but can't stop thinking about fell. He wanted to see him again. He wanted to go to Underfell. Fell... he was desperate to see him... even if for only one more time to see him. OK, so first things first! If you don't ship this, don't read this story! Second of all! The cover image was made by me on my phone at midnight XD Third of all! This story was purely made because I CANT FIND ANYMORE GOOD SCIFELL STORIES! D: I have literally searched every corner of the internet. (Okay, not every corner because some corners were too scary to go too) And finally! The age spans here are not normally in my personal head cannons, nor times of certain events, such as: Gaster falling into the core. Sci and pap (aka: Younger Classic Papyrus and Sans) are 8 years apart. Same with the other Sans' and Papyruses. But yeah! I hope you enjoy this story about to dorks falling in L.O.V.E. *cough* I mean love. ヘ( ̄ω ̄ヘ)
  • Underfell, A Sans x Reader Fanfiction (Discontinued) by Makayla2290
    Makayla2290
    • WpView
      Reads 1,217
    • WpPart
      Parts 11
    Hey guys! This story is currently being rewritten, so go check out "I Fell for You (An Underfell Sans x Reader Fanfiction)
  • THE GREAT UNDEAD (Underfell sans x Male reader)  by Nightmareteam_2
    Nightmareteam_2
    • WpView
      Reads 40
    • WpPart
      Parts 2
    this story was mainly made during insomnia hour for me it's about you and underfell sans and the reason of making is was Sher boredom and also I've only been able to find 1 underfell sans x male reader so I thought I'd go and make my own since maybe I'll like it though don't hate on what it is people cause remember I did make most of this being tired asf but not being able to fall asleep I hope you understand, and I don't usually post often since I get writers block way to easily also the art on the cover is mine so please don't steal it I really don't want to have to deal with art thieves today or any other day and honestly way to tired to deal with it and without further a do you can read the story and if you didn't read the description welp ok have fun with the story I made this a long time ago and never finished it or continued, I didn't even post it so I guess I will now lmao Btw I also made the cover art hope y'all enjoy it lol Btw I got the idea for the story from Your_local_trans I really liked their story so I have based some parts off of it but I put a twist to it cause I wanted to seem like it was a bit original even though I got the idea from him Published:12/21/2023 Started:3/24/2022 Finished:
  • Broken Promises by thatonefangirltho
    thatonefangirltho
    • WpView
      Reads 671
    • WpPart
      Parts 1
    Sans had never been to good at keeping promises, had he? (In the underfell universe) Sumarry: Papyrus is once again yelling at his brother, but what happens when he finally decides to fight back? (Or a one shot I wrote a long time ago lol) (Cover art not mine)
  • Undertale AU Requests by KingdomsHavenn
    KingdomsHavenn
    • WpView
      Reads 43
    • WpPart
      Parts 4
    I will write just about anything SFW, but I'll put some guidelines on the first chapter anyways :)
  • ~My Love For Sansy...~ Fanfiction  by sansy_motha_fuka
    sansy_motha_fuka
    • WpView
      Reads 275
    • WpPart
      Parts 10
    you fall in the undergorund and meet two skelebrothers. sans and papyrus. you and sans fall into a deep love very early... hehe