Underfellsans Stories

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243 Stories

  • A Family? by PrinceRinMorningstar
    PrinceRinMorningstar
    • WpView
      Reads 994
    • WpPart
      Parts 17
    I DO not own Westy, credit goes to his creator's: http://livingsnapplecap.tumblr.com Please check them out. When Westy finds a human girl in need of help, he calls his parents over and thus their story starts: Westy officially has a little sister that is willing to risk his life for.
  • A Comedian's Love by Celestial_Keeper
    Celestial_Keeper
    • WpView
      Reads 1,922
    • WpPart
      Parts 3
    Classic never felt much of anything. His humor was faked. His smile was faked. Even his relationships were simply fake. Everything about him was fake. He was merely plastic. Yet one person refused to see the negatives. His best friend Epic was always beside him. So many years of bonding left Classic with feelings, but he feared ruining the friendship. Is love worth the risk of losing one's only true friend in the worse case scenario? When a heartbroken Classic seeks out Epic, will truths come into the light? Will a romance blossom, or will it wither away for good? Book was requested by @Krookl <3 (My gift to you!)
  • Twenty Questions Till Home by CurrentlyGay
    CurrentlyGay
    • WpView
      Reads 102
    • WpPart
      Parts 3
    After the leaving of your long term housemate, living on the outskirts of town alone has left you feeling ever lonely. Especially more so as your rent raises. You put out an advertisement. Various emails have resulted in no turn up, as each person is either too eager, or unwilling to go by your pace. You were an anxious person by nature, kind hearted, but never quick to trust easy. You just woke, when the ding of your email caught your attention. A new listing. You had never known that this could lead your life in a whole new direction, full of new adventures, people, opportunities. A future toward someone you never could have imagined. "Edge, I was wondering, have you ever played 20 questions?" NOTICE: This is a slow burn fanfiction. I don't enjoy rushing relations, they should start as friendships, then become romantic in interest. Especially as I am a Demiromantic/sexual. Things will be slow in that section. I only have a few plots layered out and will be continuing on them. Chapters will most likely be slow to come out, and mainly not edited. The reader has they/them pronouns.
  • I Fell for you (An Underfell Sans x Reader Fanfiction) by Makayla2290
    Makayla2290
    • WpView
      Reads 86
    • WpPart
      Parts 1
    Once, there was a battle between two races. Humans and Monsters. The Humans thought Monsters were Vicious, Threatening and Merciless. Though the Monsters thought the same way. The Humans always treated the Monsters as if they were beneath them. So the monsters stood up to them. Eventually, The humans became tired of the monsters fighting back. That was when the war started. Both sides fought Viciously. In the end... The Humans won. Casting a Magic Barrier, they sealed them Underground, In the mountian of Mount. Ebbot... never to be seen again. Though, that was a very long time ago. Now to be considered a myth. A fairytale to frighten kids into not wandering into the forest or near the mountian... Correct? A young woman, about the age of 17, has been orphaned since she was young. Now abused by her Caretakers in her Foster home. With no will to live... She grows curious about the legends and rumors. About the Children "Dissapearing" and going "Missing", near the mountian. She sneeks from her "home", finding a large, Never ending Abyss. Falling down, hoping to end her life... Only to be given another chance at it. So here goes the start of Y/N's new life, free of the abuse and depression of her past home. ... ... ... Or so she thought...
  • Husker x Fell Sans by wufpup_x3
    wufpup_x3
    • WpView
      Reads 27
    • WpPart
      Parts 1
    Please kill me I did this for my pal I hate everything S A V E M E - If this gets enough views I will make a second chapter
  • You are my fanta-sea by Ilweb_
    Ilweb_
    • WpView
      Reads 93
    • WpPart
      Parts 1
    Sans told not too long ago about fairies to Papyrus. Since then both have been looking for one, but neither of them would have thought of one so rude!
  • Misadventures in the Ruins by thatonefangirltho
    thatonefangirltho
    • WpView
      Reads 597
    • WpPart
      Parts 3
    (Note: installment in the A Knocking at the Door series, if you are unfamiliar with this then I would suggest you read it first!) This is the one shot collection of random events that happen between A Knocking at the Door and it's (soon to be) sequel, A Step Outside the Door. Requests are taken, and this updates literally whenever I have something to write and time to write it. I never said they would be all fun and games though! So please join me as we see the events that transpire between Sans, Papyrus, and Toriel on these completely random one shots. (If something isn't cannon to the story, I'll say so at the top.) (*sigh* Cover art is mine, regretfully... I am not a digital artist at all other than this, so I'm not really proud of it XD but still, my design and such.)
  • Desire // Yandere!Reader x Underfell!Sans by lovesnapped
    lovesnapped
    • WpView
      Reads 320
    • WpPart
      Parts 3
    It won't be implied if the reader is a monster or a human or whatever in between, so you can imagine whatever he/she/it/they look like. This is pretty much gory stuff and all that, so...uh, yeah. If you're not into that. Remember, a yandere character does not feel emotions for other people, and normally fakes emotions (take fresh sans for example--he is not yandere (or at least, many versions of him are not) but he needs to fake emotions to blend in with his prey (I also feel like his species--specifically a parasite could communicate with other means), with other people he might eventually need to host). This means that if the reader ends up befriending anyone other than the one that they want for themselves--then many, if not all of the emotions they display are fake towards that friend. Yandere characters disregard the safety of other people and themselves, so they don't care if other people get hurt or murdered in the process, hell, they do not care if they themselves get injured. They only care about their lover. Yandere characters lie, steal and fight often, so if this story ever continues, there will be conflict. Yandere characters do not show guilt or remorse for their actions, only if their actions have consequences such as their lover hating them or their lover being killed. Yandere characters are more than not angry or arrogant, so this may proceed with the reader seeming more hotheaded than you might actually be. This story might be continued or it may not, I don't know yet. Further chapters may be longer or shorter, though my plans are for chapters to be longer. Comment recommendations, advice, tips, anything you think would help. It'd be nice for people to make assumptions on what may happen next. Who knows, I might use that as inspiration! ¯\_(ツ)_/¯
  • SANSCEST ROLEPLAY ZONE by LionFeeder
    LionFeeder
    • WpView
      Reads 156
    • WpPart
      Parts 2
    *Hey, I'm new to making books on Wattpad and haven't roleplayed in ages. I will roleplay with anyone with any ship, but be aware that I may add some head canons to the character you want me to roleplay as. *Since I'm just getting back into Undertale RP, my style may come off as amateur or...not that good. Bare with me, people. THIS IS FOR THE UNDERTALE AU FANDOM NO CROSSOVERS, PLEASE
  • Undertale Sans Oneshots by Gloomy-Ghostie
    Gloomy-Ghostie
    • WpView
      Reads 14,251
    • WpPart
      Parts 5
    Sans X Reader fanfics
  • The 7 Stages of Bitty Adoption: A Bitty Bones Fan Fiction  by HxnnybeeX3
    HxnnybeeX3
    • WpView
      Reads 59
    • 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.
  • Fell!Sans X Reader/OC Roleplay!  by HaileyBailey666
    HaileyBailey666
    • WpView
      Reads 23
    • WpPart
      Parts 3
    -Fill in the oc form in the form book and come back to this book-
  • I Fell Down A Hole, Now I'm Here. [DISCONTINUED] by you_but_worse
    you_but_worse
    • WpView
      Reads 335
    • WpPart
      Parts 12
    After falling down a hole, and escaping the Ruins, Y/N is captured by an unknown person. Or monster? After meeting the skele brothers, one has offered shelter, but with a catch. The other? Emotional support and protection. Sure she might like one of the skele bros, but is it worth it?
  • Christmas One Shots (Sans X Reader) by mswordyq
    mswordyq
    • WpView
      Reads 7,987
    • WpPart
      Parts 5
    Hey, you! This is a small book of Christmas Edition one-shots and a short story that I plan on posting at the end. If you came from my main book, At the Surface, I'm glad you came! If you somehow came onto this book by chance, then I hope you read this as I post throughout the month of December and maybe while you're waiting for updates, check out my other book, At the Surface! Anywho, thank you and I hope you all enjoy!
  • Melodic Romances: Broadway and New Lives by smallmaniac1407
    smallmaniac1407
    • WpView
      Reads 78
    • WpPart
      Parts 10
    the sequel to Melodic Romances
  • You were my light (the world is so dark) by A_Bored_Reader
    A_Bored_Reader
    • WpView
      Reads 252
    • WpPart
      Parts 2
    Red had always been by Sans' side. Classic's side. It didn't matter when the story changed or stayed the same, Red would always be there for him. He stayed when Undertale got to the surface, watching as Sans drifted away from him. He stayed when Classic was left bitter by neutral runs, lashing out. But then came the endless genocides. He tried to be there, to try and ease Classic's pain as much as he could. But then, the original AU was locked. When it opened up again, Classic wasn't there.
  • UF sans x abused!reader by shyatheotaku-w-
    shyatheotaku-w-
    • WpView
      Reads 13
    • WpPart
      Parts 1
    you are an abused eighteen year old girl that has depression and an abnormality disorder that basically makes you hot asf(help meh) and you think your life is over until you meet a very bonely buddy ;)
  • -•Sans AU's x Reader One shots-• by TheStarryNightSky69
    TheStarryNightSky69
    • WpView
      Reads 465
    • WpPart
      Parts 11
    ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• Just some random maybe a bit cringey reader x sans (au's) May Contain: 🎀 Fluff (for the most part) 🎀 🏵 (Maybe Lemons) + Limes (MAYBE) 🏵 🧬 Horror / Gore 🧬 🍡 Angst 🍡 🍦Scenarios🍦 I am doing requests so don't be shy and request me for the low price of zero dollars and zero cents 😇 (Money back guaranteed if you aren't satisfied) 💞🎀‼️Still in progress‼️🎀💞 *_Doing my best to write these stories quickly + get them out quickly!!_* No sans x sans / sans x papyrus stuff in this story! ❤️‼️None of the art in this story is made by me unless told so‼️❤️ this story is kinda dead ngl 🧍‍♀️ •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
  • Don't Cry. (Fell!Sans x FlowerFell!Frisk) Flowerfell by WattaTopWriter
    WattaTopWriter
    • WpView
      Reads 32,190
    • WpPart
      Parts 23
    (Maybe he loved me when he took me by the hand, and tried to understand. ) "Don't leave me! Don't be the seventh maid in the row!" He tried to understand me. My answer was laughter soft; as I lowerd my head "Your too late...I'm afriad this flower's already dead. " The flower replied. -------------------- Scattering petals down without end.. I said; "Stay with me.. I cant see any-where else we can go.." I held her "I'm sorry, this flowers already dead. " ---------------------------------------------------------- WARNING: swearing, Brutal stuff.. (NO GORE) maybe some lemon... *Flowerfell was a challenge! BBUT I DID IT! ✨✨✨✨✨✨
  • Love and War by Bu7ItRefused
    Bu7ItRefused
    • WpView
      Reads 32
    • WpPart
      Parts 2
    Eve Rieu struggles to comprehend the idea of marrying a man she had never met, let alone marrying some strange monster just to consolidate a stronger alliance between human and monster allies during a time of war. Her fears about what will happen to her are put to rest when she finally meets him.