Undertalefanfic Stories

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358 Stories

  • 2 Multiverses Connected( Steven Universe Classic Sans Au) by Itz_DakatoYT
    Itz_DakatoYT
    • WpView
      Reads 337
    • WpPart
      Parts 4
    This story is a Au of Steven Universe being Classic Sans, Ink teleports to Steven/Classic and explains what happened to Error. Steven goes on a adventure but the Crystal Gems catch him and Steven has to explain, they join Ink and Steven. They try to find Error but he's in another Multiverse, will the others find a way to save Error?
  • OUR Second Hope [Toriel X Reader] by Aquilla_AC3
    Aquilla_AC3
    • WpView
      Reads 3,276
    • WpPart
      Parts 6
    One more, only one more soul and the monsters would finally get out of their prison and get their revenge on humanity along with their mighty king, Asgore Dreemur. Toriel was devastated, she felt how all her hope in saving humanity from Asgore's grasps was slowly drifting away from her soul until you came. This is her chance, to save you from the filthy paws of such monsters and maybe, perhaps maybe, you could be her Second Hope. . . Art and cover done by me Warning: I'm not really good at writing but talent is bullshit and I'm starving for some Toriel x reader content (AN: The human in the cover is NOT Frisk, its a self insert of myself being shipped with Toriel)
  • Undertale Oneshots | REPOSTING  by crushingvanity-
    crushingvanity-
    • WpView
      Reads 40
    • WpPart
      Parts 2
    please read the author's note at the beginning of the story. it's very important. this book was originally published on @katbukis, but i have decided to bring it back on this account, due to reasons that will be stated in the only author's note.
  • 𝚊 𝚗𝚎𝚠 𝚒𝚗𝚟𝚒𝚝𝚊𝚝𝚒𝚘𝚗 𝚝𝚘 𝚊 𝚗𝚎𝚠 𝚎𝚡𝚙𝚎𝚛𝚒𝚎𝚗𝚌𝚎 by KrishPugong
    KrishPugong
    • WpView
      Reads 57
    • WpPart
      Parts 3
    hi! this is a sans au x reader (including some oc's that won't be shipped with the sanses, take note that this won't make you the sanses gf, or anything, just a close friend!) the oc's included are -verse sans (by thistle sans from tiktok) -irean (dream x ink ship child that i made) -sulfur (by random-peoplz) -TC (by dee_hartfel on tiktok)! make sure to check out random-peoplz's wattpad stories she made!, and thistle sans from tiktok! their content isn't much but i do recommend following them!, and dee_hartfel from tiktok again! they have good content too! and they have creative designs too! (the oc's made by different people are not mine!!) (prologue) -y/n went home after hanging out with their friends, aka the oc's, as they got in bed and slept, someone knocked at the door, they Weren't sure what to do so they decided to check who it was, upon opening the door, they saw no one, they looked down and surprise a letter appears, they were curious and concerned, they picked up the letter and started reading the letter, it was an invitation to a sleep over, it was weird as the writer had mentioned a portal appearing at the specific time and day of the sleepover, they were too curious so they shrugged and decided they'd definitely join the sleepover, as the writer mentioned about her friends (the oc's) being there too. the next day was normal, until it was around 8 pm, the portal appeared. y/n went in making sure to have packed up a few things they needed before going in (the plot is seemingly unfinished and yet to be completed, but i am trying to try and find some inspirational ideas through my old plots btw very slow updates-) -made in April 8th 2023 at 9:31 AM
  • Inkswap Skelebros Meet Reader ~ A Story by Jupiter505
    Jupiter505
    • WpView
      Reads 8
    • WpPart
      Parts 1
    (Y\n) is you, or you will be called 'Human' sometimes Inkswap Sans will be called 'Inky' In the story a couple of times. This is not a sin story , its family friendly!
  • All My Favorite Undertale Songs by Frisk_And_Friends
    Frisk_And_Friends
    • WpView
      Reads 40
    • WpPart
      Parts 5
    This Story Is Just Going To Be My Favorite Undertale Songs Lol. Hope You Enjoy Anyways! <3
  • The Fallen (Undertale Fanfiction) by lonelyskiies
    lonelyskiies
    • WpView
      Reads 167
    • WpPart
      Parts 4
    Seven fallen children. Determination. Bravery. Justice. Kindness. Integrity. Patience. Perserverance. But what happens when they fall down a mountain, into a world of monsters and magic? After all, They're only seven fallen children.
  • TAINTED || Halftale - UT AU by -queeni
    -queeni
    • WpView
      Reads 20
    • WpPart
      Parts 1
    Chara believes that after everything, she can get her determination back. Chara believes that she can restore her soul- that everything will be okay. Chara believes that she can live happily again- with a better family, with an easygoing life on the surface, with Frisk. Chara is wrong. Chara is tainted.
    +10 more
  • Pain Killers  by NekoCrossInk
    NekoCrossInk
    • WpView
      Reads 93
    • WpPart
      Parts 2
    Geno is stuck in a pitch black void, forced to watch his friends die all over again on a screen. He soon begs for death but something surprising happens.. someone comes but it isn't Frisk... but who is it? Neko here, fourth book. All art belongs to me. Warnings// Angst | suicidal thoughts | smut/lemon | profanity (swearing) | ((possibly more))
  • A Cat's Tale by Luna-Moon-201
    Luna-Moon-201
    • WpView
      Reads 123
    • WpPart
      Parts 8
    A mysterious cat comes into Sans and Papyrus' life. That soon Sans and Papyrus made this cat be part of the family. Sans enjoy having this cat around that soon he became close with this cat. After a while, the cat got too curious and went into the Ruins. Afterwards the cat made friends with Frisk and stay with Frisk. Frisk felt safe with this cat and both journey through the Underground. Enjoy this cute and fun loving story with my O.C. character. It's kinda an AU version of Undertale. So hope you like it. Note: Frisk is an unknown gender. So I'll be using 'them' and or 'they' when talking about Frisk.
  • Overstory Chapter 2 (an Undertale x OC Fanfic) by ReaperPH
    ReaperPH
    • WpView
      Reads 51
    • WpPart
      Parts 8
    One year has passed after Hugo Cross was defeated by his brother, Carter. He(Carter) and Frisk just turned 18 this year and the descendant of a Hate Demon known as Kurayami named Shoma has started a genocide run in New Home II. The Royal Guard are currently searching around for the murderer but their not alone, Carter and his friends are with them in the hunt Note: This is a sequel to my Undertale x OC fanfic called Overstory Chapter 1, please read it first if you do not want any spoilers. Sorry if there are grammar and spelling corrections btw WARNING: This fanfic contains strong language.
  • Ship Children of my version part 2 by Gomarnic
    Gomarnic
    • WpView
      Reads 1,130
    • WpPart
      Parts 6
    So this is part two of where my ideas of ship children are from. The rules are still the same- Only name the ship and I'll draw. If you want to see my story part 1, then by all means you can go ahead.
  • Undertale- Chara & Asriel Story by meowmira
    meowmira
    • WpView
      Reads 7,824
    • WpPart
      Parts 10
    **This is my first time in making story. So I didn't know what to put in the description.** This story is all about Asriel and Chara's backstory. I just love this game so much, so I decided to make a fanfiction. P/s: sorry if there's grammar errors in this story. My English isn't 100% accurate as it isn't my first language. I don't own any character in this story. Characters are belongs to perspective owner. #UndertaleByTobyFox I don't own any of this fanart in this story too. Every fanart are belongs to perspective owner. I'm just making a fanfiction. That's all. I hope you like my story! Sorry if the story is boring. I will do my best to make it interesting. :) <3
  • Oneshots!! (Sans x frisk) by Tob_Rog
    Tob_Rog
    • WpView
      Reads 24
    • WpPart
      Parts 1
    Frisk has a crush on sans, sans is basically frisk's security so he goes everywhere with her.
  • Ebott High (Sans x Frisk) by armygirl123lol
    armygirl123lol
    • WpView
      Reads 107
    • WpPart
      Parts 2
    Frisk is a 17 year old girl who goes to Ebott High. Sans is a 18 year old skeleton who has feelings for Frisk. Frisk freed the monsters from the Underworld and they go to the New Highschool. Frisk has had mixed feelings for her skeley friend, Sans. Read to find out more. Chapters will be uploaded weekly If I'm not busy. Character credits go to the awesome Toby Fox.
  • Why? (An Undertale Fanfic) by _UndertaleWolf_
    _UndertaleWolf_
    • WpView
      Reads 10
    • WpPart
      Parts 1
    Ziara, Zia for short, is the unknown sister of Chara, like Chara she has red eyes, she is bullied as school and abused at home because of it. After a while, she has had enough and while sitting by the hole in her favorite place in Mt.Ebott, she jumps. When in the underground her first instinct is to spare the monsters but then she changes her mind. She does genocide after genocide and at the end of each one Chara reveals more and more to to her, until eventually Chara has the strength to return. **I own nothing apart from the storyline and Ziara** **Frisk has already left the underground**
  • Sans Echo by OtchiKawa
    OtchiKawa
    • WpView
      Reads 30
    • WpPart
      Parts 1
    an undertale story about sans, not a real one. Just writing this for fun, I'll see how it turns up Sans finally not getting sad, gets sad without anyone knowing. He hides it from everyone but the echo flowers. Sans says the time and date, everything! But his name and his brother, to keep secrets. He tells the echo flowers everything and when frisk finally confronts Sans, things end up more worse then normal.
  • GlitchTale : Battle Of Gods by supersusguy88
    supersusguy88
    • WpView
      Reads 137
    • WpPart
      Parts 16
    ATTENTION : In this AU Gaster is dead because he wasted too much magic , but then they used his leftovers to bring Sans back. Also Frisk never disappeared because instead of replacing herself with Chara she gave Chara half her soul . But this means if one of them die the other one will as well. But if it's a pain that doesn't make them faint/die then they won't feel it or get the pain. During the fight against HATE itself. They realize that HATE has now evolved to a godly level DEATH TRAIT But some other strange events start to happen as well.
  • Undertale FanFics by BeachyChanYouTube
    BeachyChanYouTube
    • WpView
      Reads 23
    • WpPart
      Parts 1
    Welp here's some (UnderTale Characters x reader) fanfics for ya. THESE ARE NOT DIRTY DAT WRONG. I take suggestions, bai guys!
  • Sacred Stitches by WandaNichols
    WandaNichols
    • WpView
      Reads 4
    • WpPart
      Parts 2
    Olivia has always wanted to run away from her abusive brothers,she escapes the household and climbs to the top of a mountain,and trips. When something goes wrong,Olivia turns into something unbelievable. Two friendly monsters decide to adopt her. All is fine until some unexpected and uninvited guests fall into the underground,and harm Olivia's 'parents'.