Gaster Stories

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...

Sans is a comedian, telling puns and playing pranks is part of who he is. Or is it? Resets, his parents deaths, and bringing up his brother alone has all taken its toll...

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 is brought to the world of BNHA. He wakes on the roof of UA.He'll meet new friends and enemies, old and new. But will he ever get over the jar, filled with his bro...

The three powerful humans in control... Frisk- pacifist. Can reset. Chara- genocide. Can reset. Y/n- Neutral, though they haven't ever killed anyone. Can't reset. Y/n f...

~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...

(Cover drawn by me) The angels weren't supposed to pick sides. They were created for one reason and one reason alone. Protect the humans from any threat. There was no su...

This Story is taking place after the phase 3 event of Sans, finally losing against the human. Sans wakes up in a mansion and meeting with a blonde yellow with ponytail h...

Reincarnated as Killer Sans but a bit different. First getting reborn and then thrown into a trap AU. Too bed the MC is a genius. (Pun intantional) How that works while...

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 p...

This is another Undertale fanfiction. This time, it's about Sans and Papyrus's long lost sister! None of the pictures or videos in here belong to me.

It was obvious Gaster wasn't keen on forgiving Jessica. It seemed like every time she tried to apologize, every time she tried to open up, he dismissed her. That was wh...

Long ago, two races ruled over Earth: HUMANS and MONSTERS. One day, war broke out between the two races. After a long battle, the humans were victorious. They sealed th...

A series of semi-realistic scenarios including a handful of Undertale characters. In otherwords, stick around. ... Please.

Undertale gang reacts to songs, animations, comics, and more.

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...

You've always have had a creepy smile, and it doesn't help that you have these scars on your face now.... It doesn't matter though, you're fine with it, and he's happy t...

『Can this be true? I can't believe what I've seen. A soul like yours - to be as strong as you are. A memory stirs... you made me think of a man, from years ago - a man w...

Sans' POV : I don't know how long it's been since the last time I left the house, but today (y/n) left Snowdin. My thoughts were interrupted by a fizz noise, as if (y/n...