Underfellsansxreader Stories

A girl who has never seen the world outside of the lab sees it for the first time only to fall down into the underground. What will she find down there?

*WRITTEN IN 2016* "Can someone please just tell me.... Why him.....?" Confidence. That emotion has been coming to you a lot ever since you had met him... But...

Y/N is a half Demon Half Human, who lives with her friend Amy. They moved to a little town recently where Amy has loads of friends, which is the reason both of u moved...

Just Sans X Reader No Lemon Cover by my homeslice tkdgirl222 I don't own any of the characters in these story Don't kinkshame me I know your here for the same reason I w...

You were being abused. You couldn't take it anymore. But you also couldn't leave your kitten, Millie. So you gently put her in your backpack and got going. Your father...

Hey guys! This story is currently being rewritten, so go check out "I Fell for You (An Underfell Sans x Reader Fanfiction)

You wanted to help but it was too late... So, you left. Tears filled your eyes as you thought of the one person that needed you the most... They were gone and it's your...

Ever since you were a small child, you had heard the legend about Mt. Ebott. Whoever went there, was never seen again. Believing that the legend was a myth and wanting t...

sorry if this book is bad it's my first one

Once, there was a battle between two races. Humans and Monsters. The Humans thought Monsters were Vicious, Threatening and Merciless. Though the Monsters thought the s...

This is just an extremely Sadistic Fell x Masochistic reader. Heart and Comment if you want to give me any opinions on my story thus far, or suggestions for the next pag...

hey guys I thought it might be a good Idea to write this story but what's it is about is that a girl named seacresea is well abused and bullied because everyone well thi...

I own none of the art shown unless I say so in the chapters. All game credit goes to Toby Fox.

UNDERTALE?? IN MY 2020?? -Gender neutral so it's for everyone!- -Underfell- -most art comes from deactivated artists so I will try and credit as accurately as possible...

You fall down into the Underground, thinking your life was helpless. Now....you realize your life is helpless without him....

*Coming Soon!*

(y/n) is an abused neko that never know her real parents. She has been used as any kind of toy that you can think of and feels paralyzed. She went to Mt.Ebott hoping to...

oh noes its part 2 jskhfdofdefjdshodsnvkhdsuofdsofhudos SO MUCH SIN

(Now people the title might seem confusing but you'll figure out why this was the title) You play as a character whom who fell into the Underground,you get to choose all...

This is one of the first undertake stories that I'm actually gonna work on a lot so please don't judge this.