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 conclusion resulted in the DC Universe—the shared universe that the publisher's comics, including those related to Superman, take place in—being rebooted. Writer/artist John Byrne re-envisioned Superman in his 1986 limited series, "The Man of Steel". The following year, Byrne relaunched "Superman" with a new first issue and the original series was renamed "The Adventures of Superman". In the reboot, Byrne removed various elements of the Superman mythos, like Supergirl, to streamline the character for modern audiences, which also allowed him to reintroduce them in a new way later on. The relaunch was a major success for DC and "The Man