Grendizer, Getter Robo G, Great Mazinger: Decisive Battle! Great Sea Beast
Show: Great Mazinger --> Season: 0 - Specials
AirDate: 7/18/1976
Runtime:
Voting: 0 (0)

Overview: 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.