Great Mazinger vs. Getter Robo G: The Great Space Encounter(1975)

Great Mazinger vs. Getter Robo G: The Great Space Encounter is a Japanese animated film that pits two iconic giant robots against an alien invasion. When a UFO attacks Earth and destroys the Getter Institute, Getter Robo falls in battle and pilot Ouishan is killed. With the Getter team defeated, Great Mazinger becomes humanity's last defense against the invading space monsters. Dr. Saotome races to rebuild a new Getter Robo while the giant robot fights to hold back the alien onslaught. The film combines the classic mecha action of two beloved series, delivering high-stakes robot combat as Earth's fate hangs in the balance. A crossover spectacle for fans of 1970s super robot anime.