Darkseid Darkseid isn’t just a Superman villain, mostly because he tends to antagonize everyone in the Justice League. But it’s something about Kal-El and his goings on that apparently sets the Lord of Apokolips off. One of the most legendary battles that took place between the Man of Steel and the Omega King occurred in the superb animated film Superman/Batman Apocalypse. Watch the ending fight scene just to get a sense for how much Superman hates Darkseid.
Lex Luthor Lex is to Superman what the Joker is to Batman. Lex uses Superman to gauge his arching skills and probably couldn’t exist if Superman were to ever vanish from the DC Universe. Somehow, some way Lex finds a way to remain a thorn in Clark’s side, whether he’s dead or alive or imprisoned. You can always count on Lex to stay ready in his pursuit of Superman’s defeat.
Doomsday If adapt and react were a character, it would be Doomsday. Responsible for the death of Superman in 1992, Doomsday is known solely for being the slayer of Superman. He’s a beast that Superman has always had trouble fighting and successfully stopping, and any time he shows up, you know Superman will probably die.
General Zod Always ready to clap it up with Superman, General Zod has a superiority complex and an ego the size of Krypton before it exploded. That’s Zod’s problem: He just knew he was right and knew what was best for Krypton. Generally, that involved fighting with the House of El and it generally involves fighting Superman at some point. This is a fight that supersedes an entire planet disintegrating.
Brainiac The know-it-all supercomputer is one of Superman’s most obnoxious foes. He’s known for two things: His “twelfth-level intellect” and shrinking cities down and stuffing them into bottles. Sometimes, depending on the version, he’s also known for causing the destruction of Krypton. In any version of Superman’s battles, Brainiac is known as one of his most destructive and dangerous foes.
Superman — The Man of Steel himself is probably the best incarnation of the super family. He was the originator of the series and thus carries the name on when other incarnations drop in and out of the DC continuity, like Supergirl. The others in the lineup are literally just watching the throne.
Superboy — There have been several versions of Superboy but the most prominent is the little boy who would become Superman. DC has since stated that Superman didn’t have adventures until he became an adult but that hasn’t stopped the multitude of other versions, such as the post-Crisis on Infinite Earths being.
Supergirl — Supposedly, the story goes that the daughter of Zor-El — Superman’s uncle — survived the explosion of Krypton since she was living in Argo City, which was cast off into space when the planet exploded. Kara Zor-El was the last survivor, giving Superman one of his only living clansmen known to have survived the catastrophic event that created the lore. Her existence is removed during and restored after the 1985 arc Crisis on Infinite Earths.
Krypto the Superdog — Superman might have godlike powers on Earth, but on Krypton he had decidedly human emotions and that extended to having a pet. Krypto was used as a test subject to experiment with rocket flight. Jor-El — Superman’s father — realized Krypton was going to explode and wanted to test a way to get himself and his family off the doomed planet. Krypto was sent out into space, but the rocket was knocked off course. Drifting through space for years, the dog was found and rejoined Superman during his Superboy years.
Bizarro — The ultimate in “the evil clone/twin did it” storyline, Bizarro exists only because Lex Luthor, as usual, was messing around with things he didn’t understand. Luthor recreated the duplicating ray that was used previously on Krypton by Gen. Dru-Zod and on Earth to accidentally create a duplicate version of Superboy. Luthor also creates a version of Bizarro after the Crisis on Infinite Earths arc while trying to create a clone of Superman.