Super Giant

Super Giant , Sp Jaiantsu? , literally translated as Super Giants is a fictional Japanese superhero featured in a successful series of seriallike tokusatsu short feature films produced between 1957 and 1959 by Shintoho Company, Ltd. the nonunion branch of Toho. He is also known in Japan as Giant of Steel , Ktetsu no Kyojin? , is known in America as Starman, and known in France and Italy as Spaceman.

Super Giant is a humanlike creature created from the strongest steel by the Peace Council from the Emerald Planet. He is created to destroy evil to restore peace in the universe. Resembling a Japanese man with white tightscowl fitted with an antenna and capes under his arms, he is virtually indestructible. He wears on his wrist a GlobeMeter, which enables him toHe can also use it to disguise himself as an Earthling to walk among them. When sent to Earth to stop evil forces, he disguises himself as a Japanese man wearing a fancy suit and fedora hat almost looking like a detective, but still uses his Super Giant name. His secret identity is not that secret, as he works with the Japanese authorities in helping them to stop the threats of evil. He is just as powerful in his civilian form. He also gets along with children, and saves them from danger, as children represent the Earths future. ........

Source: Wikipedia