

Grendizer, Getter Robo G, Great Mazinger: Decisive Battle! The Great Sea Monster
1976 · 31 min · Action, Adventure, Animation
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
- Director
- Masayuki Akehi
- Writer
- Susumu Takaku
- Released
- July 18, 1976
- Language
- Japanese
Cast
Where to watch in the US
No US streaming, rental or purchase options listed right now. Check TMDB's watch page
Streaming data from JustWatch, via TMDB.








