Bill Cipher had just materialized out of his statue without any of his powers. Unfortunately, Stanford Pines was strolling by during that time.

What if Bill Cipher was turned into a human? What if he had completely lost his memory? What if Dipper and Mabel were the ones who found him? One day Bill Cipher wakes up in the middle of a forest with no idea as to who he is. Only to have the Pines twins be the ones to find him. (Rated T cause I'm paranoid)

Gravity Falls au where Dipper and Mabel are staying with their crazy over-controlling God Father Bill Cipher over the summer.

Cecil narrates what is happening at Night Vale during Halloween.

When Bill Cipher comes back in his new human form to kidnap Dipper, the trio must work together by using the journals to save him before it's too late...

A fanfiction based off of the Demon Guardians AU created by tumblr user starfleetrambo. Bill Cipher is guardian over Dipper Pines, and struggles to bond with his human, while Tad and Mabel seem to have no problems bonding at all.

The Demon Guardian AU that nobody wanted! Join Dipper and Mabel as they bond with their guardians and learn stuff. Magical stuff. It's great. No ships as of yet! Sry not sry.

You know Bill Cipher, the little Dorito Demon we've come to know and love. But what if before he became the Triangular Monster we recognize him by, he was human? Here is the story of Before Bill.

/gore warning maybe; fluff?; other things. aLLA THE THINGS. When a Writer appears in Gravity Falls and meets Bill Cipher, what will they do to get home?...or could they possibly stay?

Bill Cipher's point of view of Mabel and Dipper's first Summerween.