Subject 108 (Gaster x Reader)
_Bobundercover__
  • Reads 37,667
  • Votes 1,523
  • Parts 46
  • Time 3h 32m
  • Reads 37,667
  • Votes 1,523
  • Parts 46
  • Time 3h 32m
_Bobundercover__
Ongoing, First published Apr 03, 2017
Mature
darkexperimentfanfictiongastergasterxreaderhappyfamilylemonlovelustpapyrusprisonromanceromancefanfictionsanstrueloveundertaleundertaleauundynewdgasterxreader
Under editing 

Every-night you dreamt of a strange man, the strange Dr W.D Gaster who you fell madly in love with. With each passing day you grew closer and closer, but everyone has secrets... 
Even the seemingly perfect Dr Gaster.

(WARNING GORE, SWEARING AND LEMONS)

Cover art by @Redwolf878
All Rights Reserved
darkexperimentfanfictiongastergasterxreaderhappyfamilylemonlovelustpapyrusprisonromanceromancefanfictionsanstrueloveundertaleundertaleauundynewdgasterxreader
Table of contents

46 parts

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Origin Of The Bros (Fontcest) by BubblyShip
8 parts Complete
(Toby Fox owns UnderTale, the cover is my own art, and I'm trying out unusual ships and Fontcest is the next in line following Sansdyne. Why not?) Papyrus used to have trouble making friends, so his Dad decided to new addition to the family would be a great way to make Papyrus a perfect brother! Or, if things spiral out of control, a perfect boyfriend. Gaster really should have considered making Sans' personality not fit so perfectly with Papyrus' before he created him.
Should we be together? (Gaster x Alice OC) by Inugami_sama
12 parts Complete Mature
have a dream about Gaster and my OC. It's would be a short story. ______________________ Long ago, there was two species that rule the world. Monsters and humans. One day, the war broke of between them. The war last for century. When the humans thought of winning the war, a unexpect twist would change both the respective species. I DO NOT OWN UNDERTALE AND HIS CHARACTER!! ONLY MY OC IS MINE!
The Faults in Our Souls ~ Gaster x Reader (Under editing) by _T3chn0_
28 parts Complete
"Do you not want to go back home? To the surface?" °°°°°°°°°°°°°°°° "No." °°°°°°°°°°°°°°°° "Why?" °°°°°°°°°°°°°°°° "Because my home is right here, sitting next to me." _______________________ You were used to the unfortunates of life. Everyone had them, it was normal, but life decided to take a lemon, freeze it, then throw it at your face. But, it wasn't like it was THAT bad... Until you fell into the Underground that'd been sealed for over a hundred years, of course. Friends along the way help you through the sudden changes in your life, and a bone-ified family as well. (82,110 words) (Undertale does not belong to me, only the characters I added for plot reasonings. You belong to yourself, of course.)
Stuck Together (Nightmare!Sans x Reader) by rainbowlixur
31 parts Complete Mature
(First wrote this on Quotev loll) Humans and Monsters. Most people despise monsters, but not you. In fact, you fell in love with one. A king. And a Human. Who knew that a monster made of negativity could feel love. Who knew a person could love someone like that. Who knew that you being a negativity battery, would lead to a love story. Who knew that *he* would fall for someone as simple as you. #3 in #nightmare - 5/23/22 #3 in #xsans - 5/23/22
The Sad Love that Kills by Eggthehappy
17 parts Complete
!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 free and living in a city with humans. W.D. Gaster has been free from the void and has a stable life, at least, that's what everyone thinks. He is hearing voices and refuses to tell anyone. Grillby the bartender has been having huge success with his business but is having trouble finding some co-workers. Only for a night of talking did they change each other's lives. But they don't know why they're lives, and intentions are changing. It might be a match made in heaven. But it can also be something that might make the alliance between monsters and humans crumble. (Yes I made the cover.)
The half breed and comic skeleton (Sans X Fem!reader) by FormSans96
24 parts Complete Mature
This is a rewritten story of mine, I have changed the story to a X reader as well. I am a half breed. I am half human and half monster. I believed no one would ever love me like normal people would for each other. That was until I met this one skeleton, who has his own secrets. I can only hope.
W. D. Gaster x Reader by _MTTBrand_
41 parts Complete Mature
A collection of one shots between you and the man who speaks in hands. Some will be long, some will be short, some will be happy, some will be angsty, some will be fluffy, some will be smutty. I will write for certain AU's, but don't be offended if I ask for an explanation of the AU you request, I don't know them all. I take requests.
The Time Before (Undertale) by ANinnyMouse42
59 parts Complete
~o0o~ Book 1 of the "Better Times" trilogy ~o0o~ (Book two: "A Name to Remember") (Book three: "No One is Happy with This") There was a time where a Royal Scientist got an idea. A time where he created two weapons, who turned out to be people. A time where he built a machine to power the Underground. There was a time when the timelines weren't messed up by a certain flower, and then a certain child. There was a time before. ~o0o~ Wattpad Featured Story on 4/28/17 - on the OLD featured list ~o0o~
the Undertale Adventures by Nanmaku113
33 parts Complete Mature
What, if you meet Sans and get a crush on him? You two would move into the underground and experience some funny adventures together! Get ready for: The Undertale Adventures ~Pibs
A Perfect World by SpiritWolfNura
12 parts Complete
Image a world where there was no war. Toriel and Asgore never divorced. Gaster never fell into the void. The genocides never happened. Everyone is happy. That is this world. Gaster is a top scientist in the human government, helping improve the world. Alphys and Sans are his assistants. Asgore, mayor of Ebott and Toriel a teacher. Frisk, Chara, and Asriel their beloved, not dead or murderous kids. Undyne is the chief of police and Papyrus is her lieutenant. Everything is perfect..
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Slide 1 of 10
Origin Of The Bros (Fontcest) cover
Should we be together? (Gaster x Alice OC) cover
The Faults in Our Souls ~ Gaster x Reader (Under editing) cover
Stuck Together (Nightmare!Sans x Reader) cover
The Sad Love that Kills cover
The half breed and comic skeleton (Sans X Fem!reader) cover
W. D. Gaster x Reader cover
The Time Before (Undertale) cover
the Undertale Adventures cover
A Perfect World cover

Origin Of The Bros (Fontcest)

8 parts Complete

(Toby Fox owns UnderTale, the cover is my own art, and I'm trying out unusual ships and Fontcest is the next in line following Sansdyne. Why not?) Papyrus used to have trouble making friends, so his Dad decided to new addition to the family would be a great way to make Papyrus a perfect brother! Or, if things spiral out of control, a perfect boyfriend. Gaster really should have considered making Sans' personality not fit so perfectly with Papyrus' before he created him.

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