The Death of Superman was released in 2018, while the second, "Reign of the Supermen", is scheduled for release in 2019. Superman is a superhero created by Jerry Siegel and Joe Shuster who appears in American comic books published by DC Comics. He debuted in "Action Comics" #1 on April 18, 1938, to immediate success, and the following year became the first superhero to headline his own comic book, "Superman". Since his debut, Superman has been considered a cultural icon in the United States. In 1985, DC launched the crossover event "Crisis on Infinite Earths", which took place in a variety of comics. Its
Superman Universe, which is a shared universe of superhero characters owned by DC Comics, and consequently he frequently appears in stories alongside the likes of Batman, Wonder Woman, and others. Superman has sold more comic books over his lifetime than any other American superhero character. Exact sales figures for the early decades of Superman comic books are hard to find because, like most publishers at the time, DC Comics concealed this data to deny competitors, but sales of "Action Comics" and "Superman" probably peaked in the mid-1940s and thereafter steadily declined as part of a general trend in comic book sales.