Undertaleaus Stories

1.2K Stories

Reborn as Error by Kiwi_Seal
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...
An Error's Doll by EroseWisp
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...
Reincarnated as a Voice by IHamTiredAndBored
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...
Trapped │ Sans AU x Reader by Fluffiesthellspawn
Trapped │ Sans AU x Readerby Fluffiesthellspawn
It was just a normal day for the life of Y/N until they make the grave mistake of going to get a bag of chips..That's when their life would change for the unknown. -- A...
Y/N the Creator (Alphatale Fanfic) by DynamicCiocea
Y/N the Creator (Alphatale Fanfic)by DynamicCiocea
An Undertale fan from our world gets reincarnated in Undertale. Will they travel the multiverse in search of allies? Or will they help with the knowledge from our world...
Let Me Run by SilentObserverWrites
Let Me Runby oof
It's been two years since the barrier was shattered... All was well until humanity's opinion and voices ruined it all. The war had begun. --------------- Although one gi...
Jaune Errorby Core Jaune
Jaune Arc this man always wanted to be a hero like his ancestors but fate decided to mock the blond knight Jaune saved Cardin Winchester from the Ursa Major but Cardin d...
Nightmare's little brother. (REMAKE!) // JUSTMarsLOL by JUSTMarsLOL
Nightmare's little brother. (REMAK...by JUST Mars!
~ Dream was born 21 years after Nightmare was. Right after he was born, he was already titled as the 'Guardian of Positivity'. Quite too young for a child like him. But...
Untitled. (Storyshift Chara X Logical Male Reader) by TesterRealm
Untitled. (Storyshift Chara X Logi...by Guy
This story focuses on Storyshift, an Undertale AU originally created by Voltra, which I'm sure you've already heard of. This will be your generic X reader story, so yeah...
To become a parasite by KarmaAkabane425
To become a parasiteby Karma Akabane
What if..someone became the same parasite that was fresh? Not as the skeleton, but the parasite, the thing is, when this parasite gets memories of another life and their...
Sanscest Oneshots  by Ravenpoint
Sanscest Oneshots by A Random Ace
Basically whatever ship whenever I feel like it. Some thing or ships might come up again and again. I get a lot of ideas randomly. •>• I do take requests tho if you h...
Remade as a SOUL in Deltarune by Truenote
Remade as a SOUL in Deltaruneby Truenote
When I had just finished creating my character in Deltarune, which was then discarded by the game, everything had suddenly gone bright.
Insomnia- Accidental Love by CaptainPluffer
Insomnia- Accidental Loveby CaptainPluffer
There are two sides in the Multiverse. There are the Star Sanses, known to be the heroes and saviors of the Multiverse. And then there are the Bad Sanses, known to cause...
Transported into a skeleton orca mer but I'm killer as well!? by KarmaAkabane425
Transported into a skeleton orca m...by Karma Akabane
What if..someone was transported as a orca mer bit was also killer sans? What if..they were also the reincarnation of killer who was a mer in that au but died a while ba...
Reincarnated as Dream with Differences by Xalatea_Zennia
Reincarnated as Dream with Differe...by Zennia
A random teenager dies in a gunfire. Now, they had awaited their fate for so long, helping everyone out till they passed on. This teen was religious and may or may not...
Ticklish Ink!Sans One-Shots by Sovereign_Flower
Ticklish Ink!Sans One-Shotsby Violaceae
Tick from Tickletale gets drunk one night and accidently reveals that Ink is the most ticklish Sans he's ever gotten. Word spreads surprisingly quick in the multiverse...
Remade as a Sans/☝︎♋︎❍︎♏︎❒︎ by Truenote
Remade as a Sans/☝︎♋︎❍︎♏︎❒︎by Truenote
Matt was a regular person who was a big fan of Undertale and its fangames. One day, he dies because of a person accidently knocking him off a mountain while he was hikin...
Dragon!?||ErrorInk|| by Odd_Undertale_Nerd
Dragon!?||ErrorInk||by Gaming_Flowey
Ink had a.. how do you word it? 'Odd' ? That's a good word, he had an odd dream. After waking up, since that day he's been having even more odd dreams. The Star Sans, In...
I'm...swap gaster? by KarmaAkabane425
I'm...swap gaster?by Karma Akabane
Yeah sorry gained an idea on if someone became swap Gaster Also they may be apathetic or just confused on their feelings and MAYBE Autistic, I may be a bit wrong on ap...
Enemy's to lovers by Xai0v8
Enemy's to loversby Xai0v8
This is a spicy errorink story If you don't like this ship pls DONT read or send hate thank you I will be doing more of these