Grendizer, Getter Robo G, Great Mazinger: Decisive Battle! The Great Sea Monster— Full Cast

Akira Kamiya

as Ryo Nagare

Hiroya Ishimaru

as Kôji Kabuto

Keaton Yamada

as Hayato Jin

Kei Tomiyama

as Daisuke Umon / Duke Fleed

Keiichi Noda

as Tetsuya Tsurugi

Joji Yanami

as Dr. Umon / Professor Yumi

Rihoko Yoshida

as Michiru Saotome

Hiroshi Otake

as Boss

Kosei Tomita

as Dr. Saotome