Publication history of Superman written by Alan Moore with art by Curt Swan. Although the new Modern Age version of Superman is said to have already been active for many years, most previous Superman appearances and elements were rendered out of continuity by John Byrne's "The Man of Steel". Later stories such as "" bring many of the Silver Age elements back into continuity. In Byrne's version, Superman came from the planet Krypton which was re-imagined as a cold, sterile world in deep contrast to the wonderworld of the past 48 years. Once Kal-El's rocketship (containing genetic materials and a birthing-matrix which resulted in
Superman: Doomsday entirely. Aspects of these characters were combined to form the clone Superman (Superboy was a clone, the Eradicator killed criminals, and Cyborg Superman was a villain who pretended to be the real Superman). Also, while starting up the helicopter on the "Daily Planet" roof, Lois tells Jimmy that she was an "air force brat" (while in the comics her father, General Sam Lane, was in the army). Martha Kent is depicted as a widow in the film, whereas in the comics, Jonathan Kent is alive and would possibly play a key part in bringing Superman back from the afterlife. In