![](https://cdn.animecharacters.io/images/anime/large/3607-d79bd718.jpg)
Format
Movie
Episodes
1
Episode Duration
24 min
Status
Finished Airing
Premiered
Aired
1976-03-20 to ?
Source
Unknown
Rating
PG-13 - Teens 13 or older
Genres
Mecha
Sci-Fi
Studios
Toei Animation
Producers
Dynamic Planning
Licensors
UFO Robo Grendizer tai Great Mazinger (UFOロボ グレンダイザー対グレートマジンガー)
Alien invaders take over Great Mazinger who is at the entrance of a museum next to Mazinger Z as symbols of peace. Grendizer fights the evil invaders and Great Mazinger is recovered. When the Vegan empire dispatches a new general to oversee the takeover of Earth, he quickly manages to capture Koji Kabuto and, learning of Great Mazinger through interrogation, quickly commandeers it from a museum where it was kept as a symbol of peace. It is now up to Duke Fleed aboard Grendizer to stop humanity's former defender from becoming its destroyer. (Source: ANN)