Giant Robo (ジャイアントロボ Jaianto Robo?), is a manga and tokusatsu series created by Mitsuteru Yokoyama. It is similar to his famous Tetsujin 28-go (Gigantor in the US), only Giant Robo has more fantastic elements.
The original tokusatsu TV series, produced by Toei Company Ltd., aired on NET (now TV Asahi) from October 11, 1967 to April 1, 1968, with a total of 26 episodes. The English dubbed version of the series was produced by American International Television as Johnny Sokko and his Flying Robot. [more on Wikipedia]