Grendizer, Getter Robo G, Great Mazinger: Decisive Battle! The Great Sea Monster (1976)
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
GENRES:
Action • Adventure • Animation
DIRECTION:
Masayuki Akehi
Cast & Characters
| 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 Ôtake | Boss |
| Kosei Tomita | Dr. Saotome |