Giant Robo

Giant Robo (ジャイアントロボ, Jaianto Robo) is a Japanese manga by Mitsuteru Yokoyama in 1967. An anime entitled GR: Giant Robo and a tokusatsu TV series adaptation was produced.

Plot
In a future to come humanity enjoys a new age of prosperity thanks to Dr. Shizuma's invention of a revolutionary renewable energy source: the Shizuma Drive. But this peace is threatened by Big Fire, a cabal seeking world domination. Against Big Fire the International Police Organisation dispatches a collection of superpowered warriors and martial artists, together with Daisaku Kusama, inheritor and master of Earth's most powerful robot, Giant Robo.

By capturing an abnormal Shizuma Drive which is essential to Big Fire's plans the IPO ignites a desperate conflict between the two groups. The coming battle will test Daisaku's resolve to the utmost, reveal the ghastly truth behind the creation of the Shizuma Drive, and bring human civilization to its knees!