Mario is Nintendo's long-running mascot, the moustached plumber from the Super Mario games whose cheerful voice and catchphrases have made him one of gaming's most recognisable characters. Short clips of his voice have long circulated on soundboards and in fan edits, where creators lift a single word or phrase out of context for comic effect. Saying bro fits that trend perfectly, because it pairs a wholesome retro hero with modern slang. That contrast keeps the clip useful for memes, streams and short-form videos years after Mario first became a household name.