Your walking through waterfall when a door you've never seen before, materializes before your eyes. When you open the door you see him...

this has bad words so there.

Mt. Ebott, the mountain where the monsters locked under and where people are known to go missing. But who listens to dumb stories like that? Clearly not you. After falling down into a hole that appeared out of no where. You slowly wake up to find maybe the stories held a bit more true to them than you first thought. ummm.....yea this is my first story. Criticism is appreciated, but not too harsh. The characters might go a little OOC, if you guys could give a hand if I start doing that by accident (Not sure AU of Gaster to use yet, but I know Sans and Paps will be there). I don't really know where this is going, so let's find out together! 😁 DISCLOSURE ***I don't own any of the Undertale characters, they belong to Toby Fox and Gaster is the one created by TheBombDiggity666, and their Deviant Art page: https://www.deviantart.com/thebombdiggity666/gallery/ ***

this is my first time so hope you all can enjoy

Your normal days, spent wallowing in your depression and doing nothing with your life, come to an abrupt end when you meet a mysterious man who isn't exactly human and isn't quite a typical vampire.

Love W.D. Gaster ? Then u are ready for a lovely adventure to begin my friend ! Please read on !

In this book I plan to do one shots for Gaster the royal scientist, for the underground. Requests are accepted and would really help in the making of this oneshot book. I will not do lemons due to the fact that...... (Throws hands in air and falls to knees) I do not know how to!! anyways hope you like the book. Sincerely, Lilly-pad

You've always have had a creepy smile, and it doesn't help that you have these scars on your face now.... It doesn't matter though, you're fine with it, and he's happy too... Simple Gaster X Reader fic, I hope everyone enjoys!

You are one of the few humans with magic during a war between you and the monsters. (Pre Undertale) Instead of killed you wind up captured by the monsters where you meet a scientist and doctor W.D. Gaster. Cover... I drew it myself this time