Meanwhile, as their first act, the Gozma decide to eliminate those who pose the greatest risk of interfering with their invasion: the military.

With the mystical power of the Earth Force and military technology, the Changemen begin their war against Gozma.

The eponymous Changeman are all former members of the various branches of Japanese military who were hand picked by the Earth Defense Force to combat Gozma.

Gyodai would be dispatched to enlarge the Space Beast Warriors in order to fight Change Robo.

Both have lyrics by Yoshiaki Sagara (さがら よしあき, Sagara Yoshiaki), music by Katsuo Ohno (大野 克夫, Ōno Katsuo), arrangements by Tatsumi Yano (矢野 立美, Yano Tatsumi) and were sung by Kage.