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
John Byrne (comics) (July–Sept. 1986), the first issue of which was marketed with two different covers illustrated by Byrne, the first use of variant covers by the American comics industry. Byrne penciled the six-issue DC Universe crossover miniseries "Legends" (Nov. 1986 – May 1987) during this time. He wrote and drew two monthly Superman titles with the hero's present-day adventures: a new "Superman" title beginning with issue #1 (January 1987) and "Action Comics", in which, beginning with issue #584, Superman teamed up with other DC characters. The original "Superman" book was renamed "The Adventures of Superman" starting with issue #424 and was initially