Machahiko Kondō, nicknamed "Machahiko" (マチャ彦), is a tall, blond-haired student at Wakame High School and the initial chief of its Karate Club. When new member Masaru Hananakajima defeats the entire club, mass resignations threaten the club with disbandment. Machahiko must find new recruits to prevent its cancellation. Masaru aids in this recruitment, saving the club but transforming it into the Sexy Commando Club, of which Machahiko becomes a member. His personality is sharply defined by perceptions of masculinity; comments labeling his actions "manly" instantly motivate him, while being called "unmanly" causes immediate demoralization, forming a core behavioral trait.