Gasterxreader Stories

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...

Gaster is the current royal scientist, set with a mission to break the barrier and free monster-kind from their underground prison. His loyalty and persistence to the ta...

OLD AND BADLY WRITTEN THE REWRITE IS POSTED ALREADY DISCLAIMER: The god figure created in this fanfic is purely fictional. He is purposefully made to be prideful and cru...

Suddenly you find yourself in the Underground, with no memories and an unknown and painful past. Your first encounter is Flowey and he tells you how weird and different...

woooaaaahhh

Reader meets WD Gaster. Takes place before the monsters are freed from Underground. Enjoy.

you know where this is going, you clicked on this so don't shame me! also fuck the time line dadster is alive, well and sexy "Monsters have come back and you've nev...

⚠️ Trigger Warning ⚠️ The content in this may be disturbing for some readers so veiwers discretion is advised. Here are some of the following fandoms that might be in th...

The True Gaster x Female Fanfiction

(Cover art by Tumblr user rorischach) Tw for mentions of medical settings and tools, as well as possible death and light gore. Nonbinary Gaster (he/they), I will die on...

AU X Reader AU x AU Normal stories. Youknow, stuff.

Just a regular girl... until that one day... Xalva just wanted to go to school... finish college... and maybe become a... rocket engineer. Her whole life she had looked...

Hope You Guys Like It! its my first book I will update as soon as I can

still need a proper thumbnail "do you think this will work?" he questioned, concern coating his face as he stared into your eyes. "I don't think, I know...

The remastered version of my highest read (and only visible) story! A story of a young woman in her early twenties living in the small town of Cameron Mines, residing j...

So I was really inspired to keep writing stories by someone who commented on one of my stories. You know who you are. I've been on here a lot and I've seen people actual...

I lost everything in that fire, my neighbors, my memories-my bed... In a way, it was a not-so-controlled swailing, gifting me a fresh start in Ebott. So when I finally g...

You'll get it as you read I'm shit at describing what the heck books are about

you can and Dears us both just STAR ASKING AND DEARING US OR SAMETHING

Sequel to the book Subject 108. Six years after leaving the underground,the dreams of your once beloved return as well as the calling of the mountain. But, the return o...