When the X-Men join the Marvel Cinematic Universe , there are going to be some familiar foes waiting for a chance to get at them. A number of existing MCU antagonists have history with the X-Men in the comics, and could prove to be powerful adversaries for Marvel's mutants on film as well.

Marvel fans are as eager to know which major mutant villains are going to join the MCU as which heroes. Yet it might be a shred move by Marvel Studios to first pit its X-Men against an established enemy, one fans will already recognize.

This would give mutantkind something to rally around, while also immediately strengthening their ties to the existing MCU.

Dormammu

A Destructive Demonic Antagonist That Deserves More Screen Time

Dormammu is among Marvel's most powerful supernatural villa

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