About 3 demons that are possessed by Bill Cipher. Disclaimer: I am not the great creator of Gravity Falls (I know it's pretty obvious cuz this story is a FANfic) I totally give that to the AMAZING: Alex Hirsch! You should watch the show it's "AMAZING" [as Grunkle Stan would say(only a true fan would understand...)] Also My sis made the background pic and it's amazing! you should check out her stuff on deviant art! at : http://auriceli.deviantart.com/
5 parts