Grillster Stories

The first few chapters build up the environment and characters before the relationship develops. All art is original by me, Credit: GhostSwap I'll update multiple chapt...

[NSFW] Hello Sinners! These smutty Oneshots are from my short story "I Never Got To Tell You..." which has more fluffy romance. These are the final lemony chap...

Gaster has been shattered, the pieces of his soul scattered across time and space. He is lost to the void, forgotten. The emptiness is menacing, taking any memories and...

All boyxboy haters leave now cuz this story is about to unleash my otp which is grillster

The art in this story isn't mine (if i feature my own art i'll say low chance i will seeing I can't draw grillbys head) This is story happens before Gaster falls, but th...

I couldn't help but remember, the memory striking my whole being. Something in my life made me forget. He was my friend. He then died a painful death, falling into the C...

no se necesitan palabras para ser pareja.

!WARNING! This story may include self-harm, killing, blood, and Happy pills! If you are sensitive to these things, do not read! 2 years ever since the monsters have been...

Ok fine I'll tell you the progluge.... This is different from other cute beautifully talented Grillster fanfics that I APSOLOTLY fricking love...ha you thought I would g...

An undertale love story One of my favorite ships! Grillster! (GrillbyXGaster)

WARNING IF YOU DO NOT LIKE BOY X BOY READ NO FURTHER Descriptions: Gaster: Height-5'11 Appearance-this is gaster before the "accident" so he isn't in his inky...

Smutty or not I don't care. Please request I just want to write whether it's about fucking the flower, sucking off the skeletons, making out with Mettaton, or even falli...

Excluding the most important holidays, there was only one other day a year that Grillby's was closed. If anyone actually looked inside, they would see Grillby sitting al...

During the war, Gaster had been saved by a certain someone. But 4 years later, when the knowledge-hungry skeleton is enrolled to the newly opened college, he never expec...

To love, to kiss, to sweetly hold For the dancing and the dreaming Through all my sorrows and delights I'll keep your love beside me I'll swim and sail on savage seas Wi...

A oneshot book for my otp's (I ship stuff other than these, but this is an otp oneshot book, so I'm only writing stuff about my otp's)

It's Gyftmas, and Gaster decides to combine his renowned engineering skills and his much less impressive baking skills to make Grillby a gift that is truly special. Sans...

He glanced at the demon. The skeleton was still sitting at the edge of the pond. Still looking at him. "What are you staring at", Grillby snapped. "You.&q...

When Sans first defended the lone human that fell, Kolton, he didn't expect for his scientist of a father to take care of him . . . nor the boy's two older siblings, War...