Castle's Pet (Bad Guys X Reader)
  • Reads 454,113
  • Votes 13,445
  • Parts 41
  • Time 5h 34m
  • Reads 454,113
  • Votes 13,445
  • Parts 41
  • Time 5h 34m
Ongoing, First published Mar 19, 2017
[Highest Rank: #1 in "sans"] [Second Highest Rank: #18 in "xreader"]
(Girls only!) (Earlier updates are on my Quotev account!)
  WARNING: Profanity and Violence!
  
  You were a normal 17 years old girl from the Undertale universe, you fell down Mt. Ebott when you were 15 and you've lived in the Ruins with Toriel. Oddly enough, you haven't heard anything from (F/N) since you fell. And you knew he planned something.
  
  The Villains needed a new plan against the Star Sanses and some other heroes. What happens if a mysterious cloaked man tells them about about you?
All Rights Reserved
Table of contents
Sign up to add Castle's Pet (Bad Guys X Reader) to your library and receive updates
or
#533undertale
Content Guidelines
You may also like
You may also like
Slide 1 of 10
Universal Surface Angel  cover
Fight or Mercy | Underfell x Abused! Reader  cover
Lone Survivor cover
I'm The Apprentice: Underfell Papyrus X Female Reader cover
△NEVER--ALONE△ yandere lamia papyrus x reader x Sans (Comicmaker12) cover
My Villain [Dust Sans x Reader] cover
Memory Lane [DISCONTINUED] cover
You Can Never Go Home cover
When Worlds come together cover
Hidden for so Long (Sans AU x Reader) {Discontinued} cover

Universal Surface Angel

18 parts Complete

Reader insert. What if W.D Gaster didn't just get split between time and space, but actually ended up in your world in an abandoned hospital you called home? Your were a young child he decided to use as experiments to test human determination in said world and breaks physical laws to test human possibility? He knows of the powers you gained from his experiments... all but one, this one allows you to tear realities just enough to teleport into them. Knowing of Undertale you felt bad for the monsters stuck below in their world and wish to help them, but something goes wrong and you end up going to certain AUs and helping them, gaining the attention of some bad skeletons who now desire your power for them-selfish-selfs.