"With threat of destruction at the hands of an extraterrestrial villain, the planet reaches out to two young kids, offering them the powers of the earth with which to fight back. Assuming total control of both creatures and flora/fauna, with the weight of the world in tow, proves to be quite a heavy load… but also comes with copious amounts of kick-earth fun & adventure!"[2]
Trivia
Gayajin is a portmanteau of the words "gaya" and "jin". "Gaya" sounds similar to "Gaia", the Greek goddess personification of Earth, while "jin" (人) means "person" in Japanese.