Hiro Mizushima (水嶋 ヒロ Mizushima Hiro, born Tomohiro Saitō (齋藤 智裕 Saitō Tomohiro)) is a Japanese actor, writer and model. He was well known as the main protagonist, Souji Tendou and the antagonist, Souji Kusakabe in the tokusatsu series Kamen Rider Kabuto. Despite Kabuto going on to make later minor appearances, including in recent crossover movies, Hiro Mizushima has yet to reprise either of his roles.