Giant Robo

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Giant Robo
Medicom Toy – Nostalgic Future Series 04 – Giant Robo (ジャイアント・ロボ) – Front.jpg
A vintage Giant Robo toy
(Jaianto Robo)
Genre Action, Mecha, Secret agent
Written by Mitsuteru Yokoyama
Published by Shogakukan
Magazine Weekly Shōnen Sunday
Original run May 1967March 1968
Volumes 3

Giant Robo (ジャイアントロボ Jaianto Robo?) is a manga by Mitsuteru Yokoyama, in which the huge robot of the same name as the title appears. Tokusatsu, Anime, etc. based on this manga were produced.

Since Toei requested a plot for Tokusatsu TV series from Yokoyama, he wrote this manga. Yokoyama made the setting "Giant Robo follows only a hero" for differentiation with his Tetsujin 28 which everyone can control.


Part 1[edit]

The secret society "Big Fire" scheming to conquer the world 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[edit]

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.

Part 3[edit]

A bomber carrying a hydrogen bomb crashes into Japanese waters. The hydrogen bomb has already been recovered by "BF" though the bomber is recovered at once. "BF" demands that GR1 should be exchanged for a hydrogen bomb.


  • Daisaku Kusama: A teenage Japanese boy who was traveling to T Nation in order to study.
  • Azuma: The chairman of Japanese branch of the special investigation organization of the United Nations.


  • GR1: The robot for land battles made by Big Fire. Eventually in Daisaku Kusama's possession and is upgraded in the third chapter to have both flight and naval capabilities.
  • GR2: The robot for naval battles made by Big Fire.
  • GR3: The robot for air battles made by Big Fire.


Adaptaions include: