Kazuho Haneyama  is a Vigilante and a freelance idol, known as Pop☆Step or simply Pop.  She is one of the primary protagonists of My Hero Academia: Vigilantes. Kazuho is a very logical and intellectual person; she acts as the brains of the vigilantes. She has a habit of berating both Koichi Haimawari and Knuckleduster when either of them acts up in a way that she disapproves of. She also constantly denies having any involvement with them to the police, even though she clearly does.