Zaoumaru Zaitsuhara (財津原 蔵王丸, Zaitsuhara Zaōmaru) was one of the many Oni Kamen Riders in the Kamen Rider Series Kamen Rider Hibiki. He transformed into Kamen Rider Zanki (仮面ライダー斬鬼, Kamen Raidā Zanki, "Masked Rider Slashing Demon").