Grendizer: Getter Robo G - Great Mazinger Kessen! Daikaijuu

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Alternative Titles

Japanese: グレンダイザー・ゲッターロボG・グレートマジンガー 決戦!大海獣


Type: Movie
Episodes: 1
Status: Finished Airing
Aired: Jul 18, 1976
Producers: Dynamic Planning
Licensors: None found, add some
Studios: Toei Animation
Source: Manga
Genres: ActionAction, Sci-FiSci-Fi
Theme: MechaMecha
Demographic: ShounenShounen
Duration: 31 min.
Rating: PG-13 - Teens 13 or older


Score: 6.431 (scored by 13671,367 users)
1 indicates a weighted score.
Ranked: #71582
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #10278
Members: 2,891
Favorites: 2


Ranked #7158Popularity #10278Members 2,891
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Episodes: /1


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 toward Tokyo.

(Source: ANN)

Characters & Voice Actors


Akehi, Masayuki
Sasaki, Isao
Theme Song Performance
Columbia Yurikago Kai
Theme Song Performance
Nagai, Go
Original Creator


Opening Theme

Apple Music
Amazon Music
Youtube Music
"Iza Ike! Robot Gundan (いざ行け!ロボット軍団)" by Columbia Yurikago Kai, Isao Sasaki

Ending Theme

"Tatakai no Uta (戦いの詩)" by Isao Sasaki


Jul 13, 2016
I decided to watch this as a soft introduction to UFO Robo Grendizer, which has yet to be fully subbed. Well, at least not by people who speak English. Getter Robo G and Great Mazinger also aren't fully available yet as far as I know, but I'm more familiar with their respective franchises. In this 30 minute crossover movie, the aforementioned main characters team up to tackle the deadly DRAGONSAURUS... which looks neither like a dragon nor a dinosaur. It's more like a giant jellyfish with a face and sea serpent hydra-like heads instead of tentacles.But hey, in this universe Japan's greatest scientists aren't known ...

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