Nome original: 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
Lançamento: 18/07/1976
Filme
Tempo médio: 31 minutos
Gêneros: Ação, Aventura, Animação
Sinopse: 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
