Superman: Whatever Happened to the Man of Tomorrow? reference to one of the nicknames of Superman as the "Man of Tomorrow", and was later again used in the title of another Superman . The comic book, "Action Comics" #1, published in April 1938 by "National Allied Publications" (later renamed DC Comics), marked the first publication of the character of Superman created by Jerry Siegel and Joe Shuster. The comic quickly became a success, and its editor soon realized that it was because of the popularity of the character. In an unprecedented move at the time, National Allied Publications introduced a second comic book, "Superman", exclusively featuring the popular
The Death of Superman Superman fan Shaquille O'Neal. Eradicator received a limited series, Superboy remained a fixture of the DC Universe until he was killed in "Infinite Crisis" (2005–2006), and the Cyborg Superman became a recurring enemy of Superman and Green Lantern. Later comics featuring Doomsday included "" (1995), which explores his origin, and "Reign of Doomsday" (2011), which heavily references "The Death of Superman" and features him hunting down the Supermen. In 2011, DC relaunched its entire comics line in an initiative called The New 52, which revamped the DC Universe and erased certain events. The relaunch altered Superman considerably, characterizing him as