![Meeting WD Gaster by mrdapperness](https://img.wattpad.com/cover/84141402-512-k461000.jpg)
#1
Meeting WD Gasterby writing noodles
Reader meets WD Gaster. Takes place before the monsters are freed from Underground. Enjoy.
Completed
![Darker Yet Darker by RealityFanReading](https://img.wattpad.com/cover/63977961-512-k760690.jpg)
#2
Darker Yet Darkerby RealityFanReading
(UNDERTALE Fanfiction Prequel)
Gaster's tragic history as the underground's royal scientist, and the project that ultimately scattered him through time and space.
![Invisible Friend by DeaRaifu](https://img.wattpad.com/cover/74935566-512-k707937.jpg)
#3
Invisible Friend by DeaRaifu
This is a story about you. You, one of the humans that have fallen down into the Underground. Everything seems normal until you find a door. A door to a room where someo...
![Sinfultale by SpazMax_Jax](https://img.wattpad.com/cover/230575206-512-k558839.jpg)
#4
Sinfultaleby Ajax
The first few parts are going to be character information and item info.
This is my first Undertale AU that I am confident in and I really like this AU that I have been...