Gowapper 5 Godam

is a Japanese mecha anime produced by Tatsunoko Productions. It aired on NET TV (now TV Asahi) from April 4 to December 29, 1976 for 36 episodes.

Plot
Five youths from Edo City explore a strange rocky island and discover a mecha Doctor Hoarai had developed to combat an invasion from a race of subterranean rock people. Though Doctor Hoarai was ridiculed by the scientific community for such ridiculous predictions, the youths decide to join the doctor (who was dead but had transferred his mind into a computer) in piloting the vehicles and protecting Earth. Thus, the Gowapper 5 Godam team is born! With the aid of the giant fighting robot Godam, the Gowapper team under the leadership of Yoko Misaki must face the hordes of the inhuman subterranean people.