UFO ROBOT GRENDIZER is a robot created by the MANGA creator (Manga Ka), Go Nagai, during the 70s. Creator of many successful series, Go Nagai is best known for his work on a saga of super robots, including Mazinger, Getta Robo, Great Mazinger and Kotestu Jeeg. With an elaborated storyline, more mature and complex characters for a cartoon of this era its success was immediate.