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 (Kingdom Come) powers from Williams, killing him, and reclaiming all of his own powers. Superman remains with the New Earth JSA. He is suspicious of the revived David Reid, who has been revived as Magog, and fearful that Reid will become like the being he knew on Earth-22. The "Daily Planet" is attacked and flooded with a green gas. Superman arrives and has a flashback to the time the Joker attacked his world's "Daily Planet". The green gas is filled with kryptonite, which has no effect on Superman other than to cause his eyes to sting. Superman captures the terrorists and questions