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

• DirectorMasayuki Akehi
• Release18 July 1976
• Genre
  Action / Adventure
• Duration0h 31m
• Budget?
• Revenue?
• Rate
  

  6.0
  20 reviews
• Productions

  Dynamic Planning, Toei Animation