Superman and the Joker team up in an issue of Action Comics that feels like the world's most unlikely superhero buddy movie

Who do you turn to when you're trapped in a world gone mad? For Superman the answer is obvious - and terrifying. Meet the world's sanest man: the Joker.

Action Comics #1063 marks the conclusion of Jason Aaron and John Timm's three-issue 'I, Bizarro' storyline, the first part of the Superman Superstars initiative from DC. In last month's issue, Superman was corrupted by the spell that has transformed the entire human race into Bizarros. However, the Man of Steel was able to fight off his magical influence and regain control of himself. Still, even for Superman, taking on all of humanity is a tall order. Now he must find a way to stop Bizarro for good...

In #1063, Superman is navigating a mental model of Metropolis. Yes, while Sherlock has his "Mind Palace", Superman has a working replica of the entire planet in his brain. He's here to confront his own deepest fears while being guided in the real world by the Joker who, thanks to Bizarro, is now the reverse of his usual maniacal self. Still smart, he's kind and helpful and able to use his fierce intellect for good, rather than evil. 

The result is a comic that feels like a deeply unlikely superhero buddy movie. Still, it remains an uneasy alliance. At one point the clown says, "Don't you worry Superman. You may be on the verge of complete mental ruin, in a world where every living person violently despises you… But at least you've got the Joker looking out for you!" That's probably not quite as reassuring as he'd hoped...

It's in this imaginary world that Superman is able to confront the shard of Bizarro embedded in his mind. Even with the Joker's help, it's not enough to beat Bizarro who first punches Superman through the entire planet and then succeeds in killing him. He resurrects, and is immediately killed again - a loop that happens over and over again, with Superman dying and resurrecting over 100 times before Bizarro finally succeeds in conquering his mind.

Now faced with a murderous Superman who has been