Thanks to the orchestrations of Lex Luthor, terrorist John Corben becomes Metallo, a skin-covered cyborg with a Krytonite heart. Luthor then sets the supervillain on a quest to kill Superman.

When embittered scientist Earl Garver goes into a coma before revealing the location of a ticking bomb, Superman risks enlisting the Parasite to drain the information from Garver's mind.

A giant humanoid creature with incredible strength and heat-sapping abilities, falls to Earth and now threatens the planet. Superman has to fight the creature's advances and send it back into outer space.

Lois stumbles into a parallel world where Superman and Lex Luthor work together as dictators of Metropolis.

Lois ends her romance with Bruce Wayne when she discovers that he is Batman. Lex Luthor tries to end his alliance with the Joker, but the Joker turns the tables and kidnaps Lex and steals a powerful aircraft to attack Metropolis.

When an evil demon is unleashed, Superman attempts to enlist the aid of the now disinterested wizard superhero Doctor Fate.

Clark Kent is thought to be dead after an automobile accident. Superman must nevertheless save an innocent man from execution and find the real culprit.

Brainiac travels back in time from the year 2979 to destroy a young Clark Kent before he can become Superman. The Legion of Superheroes, however, send three of their own to stop him: Saturn Girl, Cosmic Boy, and Chameleon Boy.