Gaster Stories

Sans has had an interesting past. A past that even his beloved brother barely even knows of. A past that, despite being so long ago, always finds a way to bite back. A...

He went blind in a freak accident at the lab. Now all he 'sees' is darkness. Until.. he meets you.

Just like any other Sans X MHA/BNHA, Sans dies but with Chara. Exactly 100 years later, Sans woke up in the middle of Japan. Will he get the hang of his new world? Unde...

This is a story before the last human fell around the time Chara was still alive and well. Humans were not being hunted till the adopted prince's passing, however with a...

Gaster, the Royal Scientist created best of his invention. Core of Hotland. But there was an accident that ended his life. As a result of the crash at launch, he fell di...

Sans has lived through countless timelines. He's seen the kid make friends with everyone, only to give up in the final moments. He's seen the kid killed, over and over a...

"Like Underfell, but a different AU."

Underverse self insert Includes Y/N's that might actually make sense REWRITE

(YN), an 18 year old teenager that lives in a dimension called Undertale, alongside with his parents; Queen Toriel and King Asgore. His parents were then worried about h...

The Gasters have lived in the void for too long, they come up with a spell they believe will send them all back to their homes, or at least a universe less.....empty per...

Just a bunch of comics about Undertale.I do not own this comics.

The reader wakes up to a new life as a monster skeleton. In a new world, that's filled with monsters, humans, and magic. But instead of living their new life to the full...

I DO NOT OWN FORMER TIME TRIO, THIS IS A FANFIC! The owner of FTT is unknown but most likely Redrum. The human. It was all the human's fault. Everything I (we) gone thro...

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...

Even though the Underground is now empty, except for some people, you still stupidly managed to fall in the once prison for monsters. Who knew you would get away from th...

DRAMA, ACTION, BLOODSHED... Love? After erasing hundreds and hundreds of timelines, Chara is suddenly stripped of her abilities. She's forced to lead an everyday life i...

~o0o~ Book 1 of the "Better Times" trilogy ~o0o~ (Book two: "A Name to Remember") (Book three: "No One is Happy with This") There was a tim...

The part 2 of comic book of Undertale because I ran out of room.

Cover photo drawn by SodiePawp. Hello there! This is nman1983 and I am a male in his 30s that writes Undertale tickle stories, something of which I have been doing since...

(Y/n) Gaster is a human with powers that no one knows about. What would happen if he were to be living with an alien girl? To Love Ru isn't owned by me. Sans from Undert...