Daitetsujin 17(1977)

大鉄人１７

Daitetsujin 17 is a 1977 tokusatsu series created by Shotaro Ishinomori and produced by Toei. It revolves around a giant battle robot commanded by a young boy who fights the giant robots of an evil organization bent on world conquest. It is similar to Giant Robo in premise and how it ends.