The star KO is a signature knockout animation from Nintendo's Super Smash Bros. series, where a fighter launched off the top of the stage rockets away with a sparkling trail and a bright chime instead of simply blasting sideways. Yoshi, the green dinosaur from the Super Mario games, is one of the fighters who can be star KO'd. Short clips of these KO sounds circulate widely on soundboards, where editors grab them to mark knockouts, rage quits and comic ejections in gaming montages and meme edits.