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 speculated its sales were propelled by hopes it would become valuable. Gerard Jones, who wrote the "Green Lantern" tie-in story, theorized that the phenomenon may have been due in part to the then-relatively recent poor ending of the "Superman" film franchise. Sims recalled that when he worked in a comic book store in 2009, some customers were shocked that DC was still publishing Superman comics, as they did not read the story's conclusion. Generally, DC writers have denied "The Death of Superman" was a publicity stunt. Jurgens, for instance, stated he did not anticipate the attention, while Stern believed the