Mob Psycho 100, the anime about psychic middle-school student Shigeo Kageyama, known as Mob, is famous for its percentage meter that climbs as his emotions build toward an explosive release. Fans turned that near-100% tension into a shorthand for barely contained power, and clips playing on the joke have circulated widely in anime edits, reaction videos and short-form memes. The sound remains popular because it instantly signals that a calm character is about to break through, making it useful far beyond the original series.