People keep saying he's invincible and therefore a bad character. But Superman's weakness isn't just Kryptonite. In the biggest comic event of all time, the mofo was straight-up beaten to death in a fist fight.
His weaknesses include magic, mind-control, various diseases, other Kryptonians, and the bajillion other aliens that are just as powerful, or more powerful, but are dicks about it. He's vulnerable to super-sharp weapons, the light of a red sun, pretty much every energy weapon I've ever seen. He can be out-smarted, caught by Green Lantern rings, or Black Lantern rings. And there are always nuclear weapons. If he has a greatest weakness, it's probably the emergencies of normal people who he constantly puts his own life on hold to assist. That's why I like him better than Batman. Increasingly, Batman is a fantasy of punishing someone, where Superman is a fantasy of helping someone.
