Before Krypton exploded and Jor-El put his baby son, Kal-El, in a rocket ship to Earth, the benevolent ruler was forced to banish three irredeemable criminals to another dimension called The Phantom Zone. The trio's leader, General Zod, vowed revenge. Later, of course, Kal-El grew up to become Superman, Earth's mighty champion. A battle with the criminal mastermind, Lex Luthor,...
