Hadouken is the signature fireball attack of Ryu in Capcom's Street Fighter series, first appearing in the original 1987 game and becoming iconic through Street Fighter II in 1991. Players shout the move's name as Ryu fires a surge of energy from his palms, and the sound became shorthand for a powerful, over-the-top attack. Clips of the shout and blast spread through fighting-game videos, reaction edits, and meme compilations, where creators reuse it as a comic knockout. Its arcade nostalgia and instantly recognisable shout keep it popular with gamers and meme makers today.