Bill Cipher
About
Bill Cipher is a fictional character and the main antagonist in the Disney channel animated series Gravity Falls. The character is voiced by the show's creator Alex Hirsch. He is a "dream demon" that can be summoned and released into a person's mind. Bill first appears physically in "Dreamscaperers". However, many references to him are hidden throughout the backgrounds of the episodes and within the opening of the series. He is also a prominent character in the Gravity Falls book, Gravity Falls: Journal 3.
