Gaster Stories

I decided to do an ask & dare with my AU, Staintale. Staintale is a AU where Frisk and Chara are controlled by the player, Chara, Frisk, Flowey, and Sans all remember re...

Frisk is 16 Chara is 18 Sans is 18 Papyrus is 17 Every other character in the underground is over the age of 18. There will be time skips in the story, but written out...

The reader wakes up to a new life as a monster skeleton. In a new world, that's filled with monsters, humans, and magic. But instead of living their new life to the full...

[3rd book] So it's yandere Undertale One shots because I can. Also because some characters just kinda need to be more recognize. Slow updates? Or it will just Update at...

You have fallen in the underground. Find a way home. | | | WARNING: This book may contain spoilers for the pacifist route of Undertale.

What if our favorite knuklehead ninja goes to Undertale multiverse, become a monster, and has gamer system? This is my first story.

One month before Frisk falls into the Underground a different human falls, someone that is not from this world, but from ours, and now they have the power to change the...

A young woman dies and is reincarnated in an Undertal Au she made as one of the Skeleton twins. Will she change the multiverse? She changes things in her AU for good or...

(Undertale/Deltarune belongs to Toby Fox! Short prequel story to Down To Ebott Lake following the early months the monsters spent on the surface, as well as Asriel's tra...

Small warning if you don't like the ship Gaster x grillby don't read Also no sex scenes or anything sooo yeah Also might be one of those ones that I work on when I can'...

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...

"What's that look for? Are you perhaps unhappy to see me?" "Oh no. Oh no, quite the contrary, my love. I've craved to be with you for the longest time&quo...

Join the crew on various adventures ranging from mundane lounging at home, unleashing the beast in Among Us, and ruining friendships in Monopoly to epic quests, journeys...

Sans knew he wasn't like them... he was never one of their kind in the first place. Just an imposter. It was only time until his past came to bite him and they found o...

Yeah sorry gained an idea on if someone became swap Gaster Also they may be apathetic or just confused on their feelings and MAYBE Autistic, I may be a bit wrong on ap...

Sans but cute girl. been thinking of that for a while now. Sans has been a lazy, laid-back girl her whole life. She's not interested in relationships at all, because sh...

Extra Scenes from "It's a Beautiful Day Outside..." If there's a particular scene you would like to see, let me know and it shall be so. The unofficial sequel

It's the roaring 20's! You're alive and well and living great in your little apartment, which is always well kept, clean, and absolutely yours! Rent's cheap and the prot...

When the young, emotionless,and former bodyguard of willy tybur ends up on the wizard council and meets the royal scientist known as W.d gaster and feels feelings she's...

💀💀💀Ft. : W. D. Gaster, Papyrus and Sans🖤❤💙 ask the three Skeletons from Undertale anything as long as it ain't... 𝐒𝐔𝐒. I say this with every Ask book I create