10 Insane Times Superheroes Teamed Up With Their Worst Enemies

4. X-Men & The Brotherhood - Apocalypse

Though the conflict between the X-Men and the Brotherhood is way more nuanced to be sandwiched in a traditional hero/villain dynamic, they are at least rivals. Both groups - one spearheaded by Charles Xavier, the other by Magneto - both strive for mutant liberation (albeit in difference ways).

Regardless of the intricacies behind these two groups' relationship, they have joined forces on a whole host of different occasions. The most noteworthy one, however, came during the arrival of Apocalypse, where both groups alerted to the threat posed by the being and put aside their differences to take him down.

In the years following, members of both the Brotherhood and the X-Men have swapped sides, switched allegiances, and even attempted to bring the two groups together. The most iconic coming together still occurred in a fight against Apocalypse though, and with both X-Men Legends II and X-Men: Apocalypse having depicted similar stories, it makes a great deal of sense as to why that's the case.