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
The Death of Superman most exciting part for him was exploring what the DC Universe would be like without Superman and had fun writing about other characters' reactions to his death. DC did not intend for Superman's death to be permanent and the teams kept this a secret; they signed non-disclosure agreements preventing them from revealing the character would return. Carlin expected fans to know the death would be temporary, and in 2018 revealed he still could not believe many did not. However, the teams delayed all Superman comics for three months to create the illusion that he had really been killed because DC's