Grendizer: Getter Robo G - Great Mazinger Kessen! Daikaijuu

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)

Type: Movie
Rating: PG-13 - Teens 13 or older
Season: None None
Status: Finished Airing
Read more: MyAnimeList (MAL)
Studios: Toei Animation
Genres: Action Sci-Fi
Tags: action sci fi sci-fi science fiction mecha adventure shounen earth japan crossover super robot robot combining mecha kaijuu