Saitama is currently the most powerful being on earth. He faces a self-imposed existential crisis, as he is now too powerful to gain any thrill from battle. Initially just a hero for fun, Saitama later registers to be a professional hero for the Hero Association upon realizing that nobody recognizes him as a hero. He defends his home in Z-City from monsters, villains, and other threats. Under the Hero Association, he is assigned the hero name Caped Baldy and is currently A-Class Rank 39.