Release: 1976
Status: Completed
Type: Movie
Genres: Action, Mecha, Sci-fi, Shounen
Other Name: 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
Total Episodes: 1
Synopsis: 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.