Thanos' arrival got a lot of build-up in the MCU, but he's not the only Marvel villain who has what it takes to lead a phase.

Thanos was one of the MCU's biggest baddies, and several horrifying DC villains like Mongul and Anti-Monitor could fill a ...

The Infinity Gauntlet is the most powerful item in the whole MCU, but there are more than a few characters who could wield it.