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

Grendizer, Getter Robo G, Great Mazinger: Decisive Battle! The Great Sea Monster (1976) is a action, adventure film directed by Masayuki Akehi rated 6.0/10.

A giant sea monster known as Dragonsaurus has emerged from out of nowhere, terrorizing the depths of the oceans. Great Mazinger, Grendizer and the Getter Robo G team join forces to combat the new threat. But their task becomes more complicated when Dragonsaurus swallows up Boss Borot and makes its way towards Tokyo. Source: ANN

Cast

Akira Kamiya

Ryo Nagare

Hiroya Ishimaru

Kôji Kabuto

Keaton Yamada

Hayato Jin

Kei Tomiyama

Daisuke Umon / Duke Fleed

Keiichi Noda

Tetsuya Tsurugi

Joji Yanami

Dr. Umon / Professor Yumi

Rihoko Yoshida

Michiru Saotome

Hiroshi Otake

Boss

Kosei Tomita

Dr. Saotome