Superman (1939). Certain materials such as lead can block his X-ray vision. Superman can project beams of heat from his eyes which are hot enough to melt steel. He first used this power in "Superman" #59 (1949) by applying his X-ray vision at its highest intensity. In later stories, this ability is simply called "heat vision". Superman can hear sounds that are too faint for a human to hear, and at frequencies outside the human hearing range. This ability is introduced in "Action Comics" #11 (1939). "Action Comics" #1 (1938) explained that Superman's strength was common to all Kryptonians because they
Superman robots stronghold of that world's Superman is protected by fearsome-looking insectoid robots. During an attempted robbery, one hero makes a comment about "Superman's robots". Superman robots The Superman robots are fictional robots from the DC Comics Universe. The robots resembled Superman in appearance and abilities. Superman robots played a particularly dominant role in late 1950s and 1960s era Superman comics, when readers were first introduced to Superman possessing various robot duplicates. These robots each possessed a fraction of the Man of Steel's powers, and were sometimes used to substitute for him on missions (such as those where kryptonite was present) or