Giant 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. Plot Part 1 The secret society "Big Fire", scheming to conquer Earth, is furthering Project GR. The special investigation organization of the United Nations dispatches an agent in Country T to interfere with the plan. Daisaku Kusama, a Japanese tourist, is mistaken for the agent and is abducted by "BF". Part 2 Daisaku Kusama comes back barely alive to Japan with Secret Agent Azuma with GR1. However, "BF" plans an attempt on Daisaku's life to recapture GR1 and they let GR2 and GR3 attack Tokyo.