Superman uses his super-speed to become move so fast that he becomes invisible to a normal human for the first time in Action Comics #83 (February 1945). The Flash was doing that five years ago!
281 – Superspeed Invisible
Superman uses his super-speed to become move so fast that he becomes invisible to a normal human for the first time in Action Comics #83 (February 1945). The Flash was doing that five years ago!