Fleetway Super Sonic comes from Sonic the Comic, the British comic published by Fleetway from 1993 to 2002. In that continuity Super Sonic was not a heroic boost but a sadistic, out of control alter ego triggered by chaos energy and stress. Fans later clipped his laugh for YouTube edits, horror mods and meme soundboards, where it spread as shorthand for a beloved character turning monstrous. It remains popular because it captures that specific Fleetway version, darker and more feral than the games.