Mudamudamuda comes from JoJo's Bizarre Adventure, where Dio Brando uses it as the battle cry for The World's punch barrage, with muda meaning useless in Japanese. This HFTF version is taken from JoJo's Bizarre Adventure: Heritage for the Future, Capcom's late 1990s arcade fighting game, where the cry accompanies Dio's rush attacks. Clips and edits from the game spread through anime forums and video memes, and the phrase became shorthand for any overwhelming, pointless barrage that keeps coming long after resistance is futile.