Battle of the Planets (1978) is the first Westernized adaptation of the 1972 Japanese animated television series known as Kagaku ninja tai Gatchaman. Of the 105 original Gatchaman episodes, 85 were used in the Battle of the Planets adaptation, produced by Sandy Frank Entertainment. The adaptation is generally faithful to the plot and character development of the original Gatchaman series, but significant additions and reductions were made in order to increase appeal to the North American juvenile television market of the late 1970s.
Battle of the Planets casts five young people as G-Force, consisting of Mark, Jason, Princess, Keyop, and Tiny. G-Force protects Earth from planet Spectra and other attacks from 'beyond space'. Their main ship is The Phoenix, which can deploy four smaller vehicles, each operated by one team member. A regularly featured deus ex machina was the transformation of The Phoenix into a flaming bird-shaped craft able to handle virtually any exceptional situation by functioning something like a large blowtorch. The Phoenix’s primary weapon was a large supply of rockets. It also occasionally flaunted a powerful solar-powered energy blaster, although the team had the misfortune of choosing very cloudy days to use it.