Springtrap is the main antagonist of Five Nights at Freddy's 3, released in 2015, a decayed rabbit animatronic containing the spirit of William Afton. His unsettling laugh has become one of the most recognisable sounds from the series, widely shared by fans in gameplay clips, animations and horror edits. As Five Nights at Freddy's grew into a lasting franchise with books, films and a large online community, the laugh stayed popular as a quick shorthand for menace and dark humour. Creators still use it because it instantly signals Springtrap without needing any visuals or explanation.