Undertale Stories

1.2K Stories

Becoming an error by KarmaAkabane425
#1
Becoming an errorby Karma Akabane
What if someone from our world became error and didn't destroy au's and left that for nightmare and his gang and claims au's? ( different things including personalities
The Skeletal Hero: Karmic Judge by A_Toast1
#2
The Skeletal Hero: Karmic Judgeby A_Toast
Complete! The player has just finished fighting sans and has left him to die. As sans turns to dust he sees a flash of light before everything goes black. He then wakes...
Reborn as Error by Kiwi_Seal
#3
Reborn as Errorby Kiwi_Seal
Cover image made by me. Someone meets their end too soon and meets someone who gives them another chance to live a more fulfilling life. One that they would enjoy despit...
Reborn As A Dust Sans [Undertale Multiverse] by DeadEnDead
#4
Reborn As A Dust Sans [Undertale M...by DeadEnDead
#1 of 61.7k tagged with Undertale 12/06/24 After drowning as a human, Ashe reawakens as a DustTale variant of Sans. With his ghost Papy helping keep him from falling int...
Reborn as the tree of feelings by KarmaAkabane425
#5
Reborn as the tree of feelingsby Karma Akabane
What if someone died and became the tree of feelings from dreamtale? Well things won't stay the same, that's for sure. (Different everything etc, different personalities...
Reborn as a Echo Flower? by DancingAce1
#6
Reborn as a Echo Flower?by DancingAce1
Where am I!?And why the heck am I suddenly a blue talking echo Flower?
An Error's Doll by EroseWisp
#7
An Error's Dollby EroseWisp
You didn't have a bucket list or anything, but you wished you could've at least read a few more fanfics or done literally anything fun before dying. Oh well, at least yo...
Sans x Borrower reader [DISCONTINUED] by Acidfall037
#8
Sans x Borrower reader [DISCONTINU...by Acidfall037
(Not my picture) So basically, this is going to be like sans x tiny reader thing. NO STEALING MY STORY!! That's all. :) and Frisk will be a Borrower too.
Reincarnated as a Voice by IHamTiredAndBored
#9
Reincarnated as a Voiceby TiredAndBored
TW: Swearing and slight gore Y/N reincarnates in the anti-void as a Voice... Will he befriend error or will they make them hate their guts? And will they meet other peop...
Friends Meeting Enemies by AngelGold238
#10
Friends Meeting Enemiesby Angel Gold
What if there was a multiverse where Error and Ink were friends? What if the voices were the creators? What if they went to the Fgod multiverse because the voices were b...
Reborn As Error's Mom by DancingAce1
#11
Reborn As Error's Momby DancingAce1
Well to start off, I'm just a teenager and I died in my sleep and was reborn as a skeleton, who is supposed to be error sans mom?...*stares at the cute bundle of cutenes...
A 𝑲𝒊𝒍𝒍𝒆𝒓 tale~ (Killer!Sans story) by Marbet_1
#12
A 𝑲𝒊𝒍𝒍𝒆𝒓 tale~ (Killer!Sans...by Mars
"Woah~ This is cool, Hm.. Hehe." What would happen if one of us adventure seeking creatures finally got their wish? "ʜᴀʜ! ʏᴏᴜʀ ꜱᴏ ɴᴀɪᴠᴇ!" But it all...
Reborn In UNDERTALE!? by Nova_The_Supernora
#13
Reborn In UNDERTALE!?by Nova_ Art_Maker
I was just a 19 year old, living my mundane life, until I died... and was REINCARNATED!? And not only that, I was reborn in the famous videogame release in 2015 Undertal...
Ask Undertale Yellow (Post-Pacifist) by Noelle_Holiday
#14
Ask Undertale Yellow (Post-Pacifis...by Noelle_Holiday
Thanks to Frisk, the Underground is liberated. And the six humans have returned. Guide Clover back to their friends. (Prequel to Ask Post-Pacifist Noelle, HEAVY Undertal...
The Animals Inside by animal-sans
#15
The Animals Insideby Paper
You are walking along a dark alleyway when you are ambushed and knocked out. In another universe, a young Sans is attacked and you both wake up in a white space with an...
Fresh New Antivirus by Hidden-Ajinn
#16
Fresh New Antivirusby Hidden Ajinn
Fresh is Admin of the Multiverse!? This can't end well ... or can it? This is an alternate universe - er, multiverse - where Fresh is responsible for the monitoring and...
AU Sans x Reader Oneshots by MorningSweets
#17
AU Sans x Reader Oneshotsby {sweets}
**PLEASE NOTE** -Cover art does not belong to me, I will only take credit for the stories, I do not take credit for characters. -I will not do any lemons -This is my fi...
Completed
When Worlds come together by Honey_Bee669
#18
When Worlds come togetherby psycho teddy
I've seen some Undertale fanfictions where readers and original characters are sucked from our reality and transported in to the reality of Undertale and it's several au...
Mystery by SpiritWolfNura
#19
Mysteryby Kyran Wolfe
Nobody knows who the Riverperson is... nobody but a single Skeleton erased from space and time. So when he's pulled out of the Void, what secrets will be told? What is t...
Broken (adopted reader x undertale) by kmosby13
#20
Broken (adopted reader x undertale)by kmosby13
your name is y/n and you have blue eyes and pink hair you had 7 siblings 4 brothers and 3 sisters your mother abused and your the third born you have a older sister and...
Completed