Venger Robo (1991)

It has been 15 years since the fateful battle with The Empire of 100 Demons. Humanity is under attack by the scientist Dr. Lando with their mechanical monsters empire. Getter Team has begun training on a new Getter Robo, Hayato recruit a boy named Go Ichimonji as Getter One's pilot. Go - along with co-pilots Sho and Gai - must use Getter Robo to exterminate the Mechanical Beasts of Dr. Lando.