Giant RoboGiant Robo.

Giant Robo (ジャイアントロボ, Jaianto Robo) is a Japanese manga series by Mitsuteru Yokoyama. The manga, which was first published in 1967, spawned a live-action tokusatsu television series of the same name, as well as a series of original video animations called Giant Robo: The Day the Earth Stood Still.