Metal Sonic first appeared in Sonic the Hedgehog CD in 1993 as a robotic rival built to match Sonic's speed, and the character has stayed a favourite villain across games, comics and animation. This laugh comes from the Dorkly take on the character, part of the wave of short Sonic parody cartoons shared widely online in the early YouTube era. Clipped down to just the cackle, it travelled to soundboards and meme edits, where its short length and instant villain energy keep it in regular use.