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.
(Source: ANN)
Characters & Voice Actors

Boss
Main
Baroni, Gil
Italian
Fleed, Duke
Main
Tomiyama, Kei
Japanese
Jin, Hayato
Main
Yamada, Keaton
Japanese
Kabuto, Kouji
Main
Ishimaru, Hiroya
Japanese
Kurama, Benkei
Main
Yanami, Jouji
Japanese
Nagare, Ryouma
Main
Kamiya, Akira
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