![](https://image.tmdb.org/t/p/w342/6qwC670hZ25y9qE374mDXcvivxR.jpg)
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
Directing:
Writing:
Stars:
- Masayuki Akehi
Writing:
- Susumu Takaku
- Gou Nagai
- Go Nagai
Stars:
Release Date: 1976-07-18
6.1/10
![themoviedb.org themoviedb icon](http://movixmuze.movixhub.com/assets/images/tmdb.png)
- Country: JP
- Language: 日本語
- Runtime: 31
Michiru Saotome
Ryo Nagare
Kôji Kabuto
Hayato Jin
Daisuke Umon / Duke Fleed
Tetsuya Tsurugi
Dr. Umon / Professor Yumi
Boss
Dr. Saotome
Tetsuya Tsurugi
Dr. Saotome
Boss
![](https://image.tmdb.org/t/p/w300/s9thDrxmgSNUeYCaGjEWHhBjeX7.jpg)
![](https://image.tmdb.org/t/p/w300/AioF6pxdSmOyHIX4CCIPaoFQ2F4.jpg)
![](https://image.tmdb.org/t/p/w300/iljuqIbd9rBlj8n2wJ20DXv3WHj.jpg)