Bill Cipher is the dream-demon antagonist from the animated series Gravity Falls, created by Alex Hirsch and first introduced in 2012. His laugh became memorable through the show's mix of comedy, mystery and supernatural horror. Online, fans and meme editors reuse the clip in villain compilations, eerie fandom edits and ironic reaction posts because it instantly signals manipulative, chaotic energy. It has stayed popular with animation fans since the character remains one of the most recognizable cartoon villains of the 2010s.