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/Batman Superman/Batman Superman/Batman is a monthly comic book series published by DC Comics that features the publisher's two most popular characters: Superman and Batman. "Superman/Batman" premiered in August 2003, an update of the previous series, "World's Finest Comics", in which Superman and Batman regularly joined forces. "Superman/Batman" explores the camaraderie, antagonism, and friendship between its title characters. Jeph Loeb, the series' first writer, introduced a dual-narrator technique to present the characters' often opposing viewpoints and estimations of each other, which subsequent series writers have maintained. Before the 1985 limited series "Crisis on Infinite Earths", the two iconic characters were depicted as