Shao Kahn first appeared as the final boss in Mortal Kombat II in 1993 and became the long-running emperor of Outworld in the fighting game series. His booming voice lines and laugh were designed to intimidate players before and after matches, making him one of gaming's most recognisable villains. Clips of the laugh spread through gaming forums, YouTube edits and soundboards, where it is now reused far beyond the games as a shorthand for an evil boss enjoying a victory or taunting a weaker opponent.