The Hadouken comes from Capcom's Street Fighter series, where Ryu and Ken use it as a signature fireball attack, unleashing a ball of energy from their hands. The move became one of the most recognisable attacks in fighting games, copied and parodied across countless games, cartoons and internet videos. As Street Fighter grew into a global arcade and esports staple, the shout and blast became shorthand for a sudden, overpowered hit. Today creators reuse it in memes and edits because almost everyone recognises the sound instantly, even without seeing the game.