Grendizer, Getter Robo G, Great Mazinger: Decisive Battle! The Great Sea Monster
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
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Genre: Adventure
Director: Masayuki Akehi
Actors: Akira Kamiya, Hiroshi Ôtake, Hiroya Ishimaru, Joji Yanami, Keaton Yamada, Kei Tomiyama, Keiichi Noda, Kosei Tomita, Rihoko Yoshida