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
Superman medical benefits, and credit their names in all future Superman productions in exchange for never contesting ownership of Superman. Siegel and Shuster upheld this bargain. Shuster died in 1992. DC Comics offered Shuster's heirs a stipend in exchange for never challenging ownership of Superman, which they accepted for some years. Siegel died in 1996. His heirs attempted to take the rights to Superman using the termination provision of the Copyright Act of 1976. DC Comics negotiated an agreement wherein it would pay the Siegel heirs several million dollars and a yearly stipend of $500,000 in exchange for permanently granting DC