Batman and the Joker have one of the most fascinating rivalries, not just in comics, but in all storytelling. Joker isn't just a baddie - he is Batman's opposite. The fact that their morals, ideologies, and philosophies are antithetical is what makes their conflict compelling. They work off each other so well, it would seem weird - even wrong - if the Joker fought someone else like Green Lantern of Hawkman.
But since Marvel and DC are overloaded with heroes, supervillains are bound to face someone besides their nemesis at some point. Sometimes, these sort of changes work. After all, it would be repetitive if the Green Goblin fought nobody but Spider-Man for 50 years straight, so it's nice to see him clash with other characters.
Most of the time, these changes are done as a gimmick but sometimes, they turn out better than the writers ever imagined. In fact, some of the most iconic moments in comic history occurred when a baddie fought a hero outside their wheelhouse.
Let's have a look at the hero/villain crossovers that worked, the ones that didn't, and the ones that were just... bizarre.
James Egan has written 80 books including
1000 Facts about Superheroes Vol. 1-3
1000 Facts about Supervillains Vol. 1-3
1000 Facts about The Greatest Films Ever Made Vol. 1-3
1000 Facts about Video Games Vol. 1-3
1000 Facts about TV Shows Vol. 1-3
Twitter - @jameswzegan85