One (Undertale Fanfic)

Reads 469
Votes 25
Parts 4
Time 13m

Reads 469
Votes 25
Parts 4
Time 13m

buttercups chara death determination dust flowey frisk gaster overgrowth sans timemachine timeshenanigans toriel undertale

I was inspired by Overgrowth and well....this happened.
  What would of happened if Toriel killed Flowey in the very beginning? Can this soulless husks absence really change everyone's life?All Rights Reserved

buttercups chara death determination dust flowey frisk gaster overgrowth sans timemachine timeshenanigans toriel undertale

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Chainsmoker [ Gaster!Sans x Reader ] by morrow-

Routine. The entirety of every living thing is dominated by it, human or monster. Everything HAS to be the same. It was in this that you were the exception. For you everything was new, every time line a detailed altered in order to satisfy your sadistic desire for a new ending, whether it be only a few details of dialogue altered or something else entirely. Monsters you once considered family you now butcher and slaughter without a second thought, after all, that's what the Reset is there for, right? And all at once it stops. Your small hold over the Underground is ripped away from you and you are thrown into a dying timeline, monsterkind's final attempt at self-preservation. You're alone, completely and utterly alone. Except one. And he has a bone to pick with you.

Into The Game >> (Sans X Reader) Undertale FanFiction by Melody4164

It was just a normal Saturday. (Y/N) was playing Undertale for the millionth time. She was obsessed. (Y/N) had played all of the routes. True Pacifist, No Mercy/Genocide, Neutral. She experimented with killing certain characters doing different things. Then, as (Y/N) started a new game, she felt a falling sensation, as if she just fell out of her chair. She blacked out soon after. When she woke up, she was lying on a bed of golden flowers. She knew this place. (Y/N) was in the game. She had taken the place of Frisk and was in the Underground. •Disclaimer I do not own Undertale. It belongs to Toby Fox. I do not own you. You own yourself. I do not own the cover or any of the pictures that will show up in this book• *If you're reading this as a guy please just change the pronouns to he/him/his. I find if a lot easier to just put female pronouns. Thanks! :3 *

Everything Goes Black - Undertale Chara X Frisk by Dark_Moss

What happens if Chara got woken up when Frisk fell? What if Chara joins Frisk on their journey? What happens when Frisk starts killing? What will happen to Chara?

I'm Not Normal! (Undertale) by looloo900

The year is 201X, monsters who once roamed the surface have been banished again after 1 year, no more magic remains from the monsters, except for one child. Georgia Corona. WD Gaster's daughter is the only human with both a human and monster soul, as well as being the only human to teleport, summon bones, blasters and heal monster souls. Georgia is not an ordinary teenager, she doesn't spend time revising, but visiting the underground to see her father, helping him with scientific projects. As other teens would be partying, Georgia would be teaching herself how to control her powers when she's in danger to prevent anyone accidently getting hit by a bone or a Blaster. Georgia has normal, human flesh hands, apart from one minor detail... They have holes in them. One gift from her father is convincing full human hand looking gloves. She doesn't take them off. As the shy teen moves further into High School, people questioning her 'hands'. Would she crumble under pressure and reveal? Or turn dark to keep her secret hidden? (I do not own Undertale - Toby Fox does).

Play With Your Soul (Undertale x Male Reader) [Season One] by NoNameOmo

[season one] [Y/N] had always struggled to put effort into anything, despite the immense potential simmering beneath the surface. Ever since that fateful day when everyone began to see him as a freak, a monster, he had resigned himself to apathy, allowing the world to shape him into someone who barely tried. Even the Great Change two years ago, when magic surged into the world and monsters emerged from the underground, failed to spark any motivation within him. But now, with his mother deciding it was time for him to live with his aunt, a flicker of hope ignited within him-maybe this move would bring about a change. Maybe, just maybe, something good would finally come his way. ... .I don't own undertale and any of the characters that are not OCs or [Y/N] .I don't own any of the art/images that is used in here . I don't own any of the songs/music in here

My Knight In Shining Bones (Sans x Reader) by QueenOfNekoWriters

What instead of having a son, Toriel and Asgore had a daughter? A daughter who never died? A daughter named (y/n). Monsters have been locked in the underground for many years now, and their only hope is to collect seven human souls to break the barrier. With six souls in their collection, they're so close to breaking free. ... But what will happen when a certain demonic child by the name of Chara enters the realm of the monsters, and begins slaughtering them off one by one? Will (y/n) be able to save her people? Or, will she be unable to save the ones she cares about most? *** As of 5/9/2018 this story was ranked #18 for 'reader x sans'. As of 6/16/2018 this story was ranked 704 for 'undertale'.

Grouptale AU - Undertale Fanfiction by aquanell

{Can everybody PLEASE stop reading this awful story so I don't feel bad about deleting it?!} This is an AU where all 7 human souls fall down to the Underground at the same time. DISCLAIMER: Several things I have decided on for this fanfiction. Toriel and Asgore got divorced after the death of Chara and Asriel and Asgore's declaration of war. The human souls will be called by names I have decided on for them, not by their soul traits. (Cody and Clover are from the fangames Undertale Green (Kindness) and Yellow (Justice) respectively. The others are Hannah (Perseverance), Amy (Integrity), Echo (Patience), and Leo (Bravery). Chara is a ghost only visible to those that remember (I'm going with Sans, Alphys, and Mettaton (since the latter 2 probably have their research to gain clues of the past timelines. I'm not saying they remember everything, but...), as well as Frisk and the other fallen humans.

The First Human [X Sans] {COMPLETE} by RaeTheStar

Imagine Undertale, but Chara never showed up. Chara wasn't the first human in the Underground. What if a glitch occurred, and you fell down instead? You fell into the Underground, but you cant remember your previous life. Now, you are surrounded by strange monsters, who have also never seen a human before. Will they let you live? [written 2017]

Chara has one objective: RESET back to when they themself fell, and save Asriel from his demise. With all the Genocide Runs the now-free Frisk goes on for them, they're able to amass a big enough collection of SOULs to do exactly that. The only problem is, Asriel remembers everything that happened when he was Flowey. And he isn't too happy about it... In this new timeline, Kelsa, the SOUL of Bravery, falls into the Underground shortly after Frisk. Determined to save her only friend, Kel teams up with a mysterious flower with a face to find them and rescue them from Asriel's notorious freezing chambers. Betrayed by many, and uncertain who to trust, Kel finds herself in the midst of an iron-fist dictatorship, fighting to restore the Underground to the peaceful place it used to be. But... all is not as it seems, and there may be things about Frisk that Kel will wish she'd never discovered... Cover art by yours truly :3 This story takes place after the events of Underhappened. You may wish to read that first if you haven't already :D

Undertale X Reader [In Remake] by Cat_Maipie

Let's get to the point shall we? So let's look at the list here... You're a... no information? Hm, interesting i guess, I'll have to base it off my observation. Whatever, you're a human, well kind of. You're a human and a monster at the same time, more like in between. Let's say... player? Better than nothing i guess. You're your own person. Sometimes you control frisk, sometimes you don't. You can also move through timelines, and also universes but that may be too risky huh? You'll find more about it soon... THIS CONTAINS VIOLENCE PLEASE BE WARNED! Lemons? Maybe. - #57 in sans 12/14/25 - #1 in floweyxreader 01/10/25 *** COVER : Credits to the person who made it GAME : Toby Fox

Chainsmoker [ Gaster!Sans x Reader ]

Routine. The entirety of every living thing is dominated by it, human or monster. Everything HAS to be the same. It was in this that you were the exception. For you everything was new, every time line a detailed altered in order to satisfy your sadistic desire for a new ending, whether it be only a few details of dialogue altered or something else entirely. Monsters you once considered family you now butcher and slaughter without a second thought, after all, that's what the Reset is there for, right? And all at once it stops. Your small hold over the Underground is ripped away from you and you are thrown into a dying timeline, monsterkind's final attempt at self-preservation. You're alone, completely and utterly alone. Except one. And he has a bone to pick with you.

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