Gastersansxreader Stories

You were working with Alphys in the lab in Undertale when chaos strikes! In a freak accident, concentrated determination is mixed with an unnamed concoction and blow you...

------------------------- "Well would you prefer 'glasses' or 'human'?" He smirks. "..." You glare at the smoking skeleton. "Then Doc it is.&quo...

The only way to the top in this world, this world born of war, born of death, the only way of ascension? ...is to become someone you don't want to be. And so I've got to...

You wanted to escape your life... you wanted to die but then a monster change everything...

Finals are coming up and you're determined to ace them, and that means that you enlist the help of your best friends, Sans. Well, his full name is Gaster!Sans, but you j...

(Cover Art is not mine.) You don't remember who you are, or who you used to be. You've woken up in an abandoned costume shop with amnesia, after the second human and mon...

You know how they have "Adopt a character" stuff? Someone draws a bunch of Ocs and then has a contest or lets people pick one they want to use? Well I'm doing...

They could suck your non-existent dick because you wouldn't care if they would kill you are not. It was a fun life anyway. You are the heiress to the 'Monster Eliminato...

"Listen hear, bucko. I don't want to take any punches on your skeleton face,but if you don't shut the hell up. I swear to lucifer! You are dead to me! So don't call...

You're a 17 year old female named (Y/N). Your mother had sadly passed away when you were just 14. That's when you're father had started abusing you. You've been bulli...

Raven Aris, the girl no one knows, the girl everyone hates, the girl who hates humans for they killed her friends, the girl that hates monsters for they killed her broth...

(Y/N) is a young girl with a questionable past. What happens when she meets a smexy skeleton that knows how to fix her?

You could only stand there and bare the pain of loss. You knew losing loved ones hurt, but when you lost them twice, it really stings. So when all that's left to love i...

i was reading a fic a while ago and liked the premise, but the writing wasn't super well done so im writing my own.

You werent one of those people who were seen as...unique. You were seen as someone who never stood out in a crowd and was never seen as special. At least thats what ever...

Your life hasn't been the best, Your parents don't really like you, and you're being bullied Way too much at school. Yeah, your life is hell. Until you meet Sans. I don...

It's been a years since the barrier to the underground and the human realm was shattered by the human Frisk. But as time went on Frisk went missing. Humans did not take...

You're a girl going through high school, trying to make a plan to scar the school's biggest bully. But someone distracts you... Who shall it be? Shut up you already kn...

5 years. 5 years it's been. 5 years since Frisk freed the monsters. 5 years since your mom left you. 5 years you've put up with your father. 5 years of suffering and ang...

How long has it been ......how long am I gonna keep doing this......its to late already right? He already knows. Please just read the story to find out Its just a little...