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: War of the Supermen Superman: War of the Supermen Superman: War of the Supermen is an American comic book limited series from DC Comics that serves as the culmination to the "Superman" line-wide event "". The series began on Free Comic Book Day 2010, with a zero-issue released free of charge before the main limited series began the following week. The whole event is portrayed as a "100 Minute War" in the narrative's time, although the whole event lasted one month in May 2010. No other "Superman" family books were solicited that month other than "Superman/Batman" and "Adventure Comics" neither of which crosses over