Bill Cipher is the triangular dream demon and main antagonist of Gravity Falls, the Disney animated series created by Alex Hirsch, who also voiced the character. Introduced as a playful trickster, Bill became one of the show's most quoted villains thanks to his warped voice and cheerful threats. Clips of his lines spread widely on meme soundboards and fan edits after the series ended in 2016, and short voice lines like this one are still reused for villain jokes, edits and reaction videos.