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
DC animated universe (comics) League Unlimited" comics did use many characters from the DC Universe, some characters never made it to the screen. Those that did not appear in the television series are listed below: The entire Marvel Family (except for Captain Marvel, who made a one-time appearance) were unable to appear on "Justice League Unlimited" due to legal reasons. DC animated universe (comics) While Batman and Superman had their own animated series and comic book follow-ups, the rest of the characters in the would appear in the following comics often. The Batman Adventures was created as a comic book tie-in to and The