Rentaro Tachibana (立花 蓮太郎, Tachibana Rentaro) is a florist who is hired by ZAIA Japan to compete against Sakuyo Ichirin but is given a Raidriser and Progrisekey by Naki to transform into the Crushing Buffalo Raider (クラッシングバッファローレイダー, Kurasshingu Baffarō Reidā).