COMPLETE!!! This story is in the past! It plays off the idea that sans and papyrus are Gaster's kids. Being the past it means that his kids aren't born/created yet. Also monster kid, Frisk, Chara, and Asriel aren't born/created

Dark, darker, yet darker. The darkness keeps growing in your life. You don't know why, but there's someone relentlessly haunting you. He won't leave you alone, and every dream you have is a nightmare. It seems peace is currently impossible for you. What great evil could possibly want to harm you? You never felt that you had done any evil unto anyone else...if anything, you felt like your life was just a long list of things you'd never done. Was your insecurity in itself a sin? Don't jump to conclusions so fast, you poor, tortured soul. Harm may not be what this force wants to inflict after all. It may just be a distorted cry for help. In this post-pacifist route story, get support from well beloved characters as well as new ones, and delve deep into your curiosities and sympathies for one of Undertale's most mysterious characters. Dive in an reap the fruit of the void! Also on my Deviantart! http://rechtbrecher75.deviantart.com/gallery/60771559/Fruit-of-the-Void-Gaster-x-Reader

I have nothing better to do so what the hell gotta take a risk now and again, eh? Hope you enjoy!❤

You had been getting these weird warning, mainly from Sans. You packed plenty of healing items and your heart locket to see what everybody is so scared of. You soon meet not only your friend, but a fun skeleton who stole your heart (not literally!!!)

You lost your father in the war against the monsters. If it was up to you every last being that fought against man would be sent to execution. But it wasn't your choice.... unless it was? That's when you decide to visit the underground. All you needed was one excuse to rage another war against the monsters this time without showing mercy. But what you didn't expect was HIM. The monster that gave made you question your own methods. The monster that didn't treat you like a freak. The monster that gave you the only aspect you lacked.... HOPE.

Hi guys! So this is actually my first time writing a adventure story (and xReader), so I am kind of sorry if it looks crappy!! ****** A long time ago, people were missing when they climb up Mount Ebott. They say there was magic, got lost, or even died. But when you discover the secrets of the mountain, you will get attached to it, and even maybe meet a new 'friend'... ||an W.D. Gaster x Reader fanfic|| •I do NOT own any type of artwork that is included here in the fanfic, all art goes to thier respective owners.•

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

GasterxReader for the lovely gangsta~

I am completely enamored with this character right now. Finally, someone I can unleash my 'dad' kink on~ They are most likely not going to be canon to his character at all, but I'll try to keep some things straight. But I am sticking to the theory that Sans and Papyrus are his kids. Hope y'all like em! :3 Cover art isn't mine!