The first time Batman and Superman shared a comic book cover was in 1940, so it’s pretty fair to say that the two legendary heroes are no strangers to teaming up.

All right Legends fans, you made it. You're completely through this year's four-part crossover event…or, at least you should be.

On paper, you can break down the difference between heroes and rogues in black and white words. But is it really so simple as a checklist? It's not like a determined number of actions cancel out evil deeds.