Musculman is the hero name of Suguru Kinniku, the central protagonist of the anime Kinnikuman. He is introduced as a clumsy, foolish, and comical superhero who frequently finds himself in ridiculous situations. His background is that he was accidentally abandoned on Earth as an infant and later discovered to be the missing prince of Planet Kinniku, a world known for producing the greatest superheroes in the universe. This discovery sets his primary motivation: he must prove himself worthy of the throne by winning wrestling tournaments and battling various evil Choujin, or superhuman beings. Over the course of the story, his personality evolves from a bumbling, often cowardly figure into a more serious and competent fighter, though he retains a good-hearted and determined nature. His role in the narrative is as the main champion of justice, leading a group of allied Choujin against threats such as the Devil Choujin and other challengers. Key relationships include his young sidekick and trainer Meat Alexandria, who keeps him grounded and offers strategic advice, and his best friend Terryman, a humble and selfless wrestler who becomes a trusted ally. Musculman’s development is marked by his training under Prince Kamehame to learn the 48 Killer Moves, including his signature technique, the Kinniku Buster. He also possesses a special ability called the Burning Inner Strength, which allows him to draw on hidden reserves of power in desperate situations. Additionally, he can grow to a height of 30 meters by consuming garlic. A significant aspect of his character is the mask he wears; in the 21st Choujin Olympics arc, it is revealed that his ugly face is actually a mask, and removing it is forbidden under the laws of the Kinniku clan. Revealing his true face has miraculous properties, such as purifying water or reviving the dead. By the conclusion of the original series, Musculman ascends to become the 58th king of Planet Kinniku, marrying Bibinba and later fathering a son, Mantaro Kinniku, who becomes the protagonist of the sequel series.