Grendizer, Getter Robo G, Great Mazinger: Kessen! Daikaijuu!

Movie (1 ep x 30 min)
2.91 of 5 from 244 votes
Rank #3,727

While searching for an unknown menace, a submarine is attacked by a giant sea monster! Getter Robo G is dispatched, but has little effect. The monster, a dragonsaurus from prehistoric times, is also attacking oil tankers. The Japanese Government assembles a Super Robot Army of Getter Robo G, Great Mazinger, Grendizer and Double Spazzer to fight the dragonsaurus, but things take a further turn for the worse when comrade in arms Boss Borot gets himself swallowed by the beast. Can even the combined might of the Super Robot Army free Boss Borot and defeat the dragonsaurus before it reaches Japan?

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