Swapsans Stories

Adopted from Firehedgehog. Error and Blueberry end up fused and cause chaos.

There had been a disturbance in their Multiverse. It was small, so small that only a few noticed it. After a while it just suddenly stopped. They eventually dismissed it...

Swap is presumed dead, but really is now working with Error to even out chaos and peace, destruction and creation All characters belong to the original creators them bei...

Dream was replaced by a new young Guardian. Well that's his cue for his retirement but... Oh well, not everyone let him retire and do whatever he wanted to do. Even af...

(Y/n): Your name (F/c): Favorite color (S/f/c): Second favorite color (C/o/c):Choice of clothing (E/c): Eye color (H/l): Hair length (H/c): Hair color I think that's al...

A 'random' teenager dies all of a sudden from what seems to be a gun, they aren't your usual teenager, it was someone more then that. Someone that nobody wanted to die...

A young woman, left alone after her family sadly passed in a car accident, suffers with PTSD and Anthropophobia (Fear of people.) Her only happiness in this world is the...

Cold. Everything was cold. And dark. I was so alone... how could I have wanted this? This couldn't possibly be better than before... the warmth, and the light, and the...

Not mine it's just too difficult trying to find it every time There is no part 2 don't blame me Original Autor @Manuru_15 Only publishing on weekends Also, episode 21...

!! STORY COVER IS MINE, CHARACTERS DO NOT BELONG TO ME EXCEPT Y/N !! (ps, I forgot the book I got inspired in doing this.) (Book is currently undergoing slow updates😵‍�...

Y/N, meets a new coworker that changes her life forever. A monster, doing his best to make a living after moving out of the underground. Sans is this ecstatic, cheerful...

(Obsessed)Nightmare Sans x Blind Reader Trigger Warning! Abuse! For Mature Audiences ~~~ Y/n has known nothing but darkness her entire life. Blinded by the cruelty of h...

'Dream' the guardian of hopes and dreams has finally given up, so he tries to erase his existence by jumping in the void.. But when he got there, he saw someone else g...

Classic Sans incidentally finds himself working as a maid for eleven different skeletons in a mansion, after accidentally breaking a statue worth millions of dollars. Wh...

Dream wasn't expecting to find Error when he located the negativity source. He definitely didn't expect to find the so called Destroyer curled up on the ground, glitchin...

(Discounted for a rewrite) A shy girl dies in her reality saving a kid from a speeding car founds herself trap in the anti void as a being called Error Sans the god of d...

NIGHTMARE is a sadistic bastard, that's just a fact. His goal is to corrupt Dream's soul and prevent the Doodlesphere from feeling positive emotions ever again. He has a...

Here's the fourth book! thank you all for all the love and nice comments on the first, second, and third book! NO LEMONS! FLUFF AND YANDERE ONLY! Mostly Au sans and pa...

NOTE: A old fanfiction created by me during Covid 2021-2022 back when I was invested in Undertale/Undertale AU's. If you're looking for angst or topics being covered mor...

Ink was believed to be dead centuries ago. However, he was just greatly injured to the point of appearing dead. His grave was unvisited for decades, and as a result, he...