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

Akira Kamiya

as

Ryo Nagare

Hiroya Ishimaru

as

Kôji Kabuto

Keaton Yamada

as

Hayato Jin

Kei Tomiyama

as

Daisuke Umon /...

Keiichi Noda

as

Tetsuya Tsurugi

Joji Yanami

as

Dr. Umon / Pro...

Rihoko Yoshida

as

Michiru Saotome

Hiroshi Ôtake

as

Boss

Kosei Tomita

as

Dr. Saotome