Japan Synopsis
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
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
Titles With Overlapping Themes
Films and series that share thematic tags with Grendizer, Getter Robo G, Great Mazinger: Decisive Battle! The Great Sea Monster. Number on each card indicates how many keywords overlap.
5 sharedGreat Mazinger vs. Getter Robo G: The Great Space Encounter
★ 5.8 · Japan
5 sharedGreat Mazinger vs. Getter Robo
★ 6.2 · Japan
4 sharedMazinger Z vs. Devilman
★ 5.6 · Japan
4 sharedUFO Robot Grendizer vs. Great Mazinger
★ 5.9 · Japan
4 sharedNinpuu Sentai Hurricaneger vs. Gaoranger
★ 7.3 · Japan
4 sharedNinpuu Sentai Hurricaneger: 10 YEARS AFTER
★ 5.5 · Japan
Other Titles From Dynamic Planning
Action + Adventure in Japan
1030 Japan titles in our catalog blend the Action and Adventure genres. Below: the top-rated of them (excluding Grendizer, Getter Robo G, Great Mazinger: Decisive Battle! The Great Sea Monster itself).
The 1975–1977 Japan Window
In the crowded 1975-1977 Japan release window, Grendizer, Getter Robo G, Great Mazinger: Decisive Battle! The Great Sea Monster sits at #37 of 51. The leaderboard below contextualises its neighbours.
The 1970s Japan Landscape
Catalog density by release year across the 1970s in Japan, 197 titles in total. Highlighted year (yellow) is when Grendizer, Getter Robo G, Great Mazinger: Decisive Battle! The Great Sea Monster premiered alongside 15 others.
Position in Catalog
Released alongside 15 other Japan films in 1976.
The 465th Japan title from Japan we index (earliest catalogued entry: 1899).
Our Japan catalog contains 4,579 titles in total (2,908 films).
Audience Engagement
19 audience reviews — more than 34% of Japan films in our index.
Popularity sits at the 26th percentile among Japan films.
Thematic Fingerprint
Tags on Grendizer, Getter Robo G, Great Mazinger: Decisive Battle! The Great Sea Monster, grouped by how common each theme is across the full Asian catalog. Rare tags are more distinctive signals.
- getter robo · 3
- giant robot · 24
- super robot · 11
- go nagai · 7
- mazinger · 6
- kaiju · 77
- mecha · 68
- giant monster · 64
Reception Benchmarks
Ranked #3,741 of 4,579 Japan films indexed here (18th percentile by TMDB audience score).
Rating is -0.8 points below the Japan average of 6.9/10.
Among Japan Action productions specifically: #1,457 of 1,714 (top 85%).
Production Details
| Primary Country | Japan |
|---|---|
| Original Language | Japanese |
| Production Companies | Dynamic Planning, Toei Animation |
| Runtime | 31m |
| Release Date | July 18, 1976 |
| IMDb | tt0422360 |