Great Mazinger and Getter Robo G: Great Sky Clash

Great Mazinger vs. Getter Robo G: Kuchu Daigekitotsu
Screenshot of the opening title.
Directed by	Masayuki Akehi
Produced by	Chiaki Imada
Screenplay by	Keisuke Fujikawa
Starring	Akira Kamiya Jōji Yanami Keaton Yamada Keiichi Noda Toku Nishio
Music by	Michiaki Watanabe Shunsuke Kikuchi
Production company	Toei Doga Dynamic Production Fuji Television
Distributed by	Toei Animation
Release date	July 26, 1975 (1975-07-26)
Running time	25 minutes
Country	Japan
Language	Japanese

Great Mazinger vs. Getter Robo G: Kuchu Daigekitotsu (グレートマジンガー対ゲッターロボG 空中大激突, Gurēto Majingā tai Gettā Robo Jī Kūchū Daigekitotsu^?, Great Mazinger Vs. Getter Robot G: The Great Clash in the Sky) is an animated film produced by Toei Doga. It is a crossover anime between Great Mazinger and Getter Robo G. It was originally shown in theaters along with Uchu Enban Daisenso. They both premiered in July 26, 1975 (1975-07-26) in Japan.

As with the rest of Toei's Mazinger Vs. animated films, the events presented in the film are not considered canon to either of the TV anime series, but it is considered a direct sequel to the previous film Great Mazinger vs. Getter Robo.

Like most of the Mazinger movies, it was shown in some countries outside Japan where the TV series were broadcast. It is known as Il Grande Mazinga contro Getta Robot G in Italy, Gran Mazinger contra Getter Robo G in Spain and مازنجر الكبير يقاتل جيتا روب in the Middle East.

Aliens in a spaceship decide to conquer the Earth and begin by attacking the headquarters of the Getter Robo team while the Mazinger was being repaired so it could not go to their aid. One of the team members, Musashi, is killed in the battle with the alien monster Grangen and his vehicle is destroyed, meaning they can no longer form the first Getter Robo. However the laboratory already had a new Getter Robo ready for action named Getter Robo G and a new third pilot is elected. Meanwhile, Great Mazinger and his allies fight the invaders' giant robot Bong but it was just bait to lure it out so that the invaders could use their trump card: Pikadron. Getter Robo G arrives to help, but their combined beams only make Pikadron grow bigger. However Great Mazinger's pilot Tetsuya figures out how to strip this defense from the monster and destroys it with a new weapon. The alien spaceship is also destroyed and in the end everyone gets together to grieve the loss of Musashi.