Historias de Royalscientist

Reader meets WD Gaster. Takes place before the monsters are freed from Underground. Enjoy.

(UNDERTALE Fanfiction Prequel) Gaster's tragic history as the underground's royal scientist, and the project that ultimately scattered him through time and space.

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...

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...