Warning! SPOILERS for Ms. Marvel episode 2.
The first hint at the introduction of the X-Men's biggest villains in the MCU has been hidden in Ms. Marvel. Despite their popularity, Marvel mutants have never been alluded to within the MCU, which suggests the X-gene has yet to be awakened. Fortunately, with Disney's acquisition of Fox, MCU mutants are expected to arrive in the future. But while the MCU awaits the highly anticipated introduction of the X-Men, some non-mutant X-Men-related characters already appear to be taking shape.
The X-Men have some of the most famous villains in all of Marvel comics, including foes such as Magneto, Apocalypse, and Dark Phoenix. However, not every X-Men villain happens to be a mutant. The Sentinels are robots created by the human anthropologist Bolivar Trask with the goal to exterminate mutantkind, fueled by a paranoid fear of the X-Men's mutant gene, which Trask and his supporters believe will lead to humanity's extinction. The Sentinels famously decimate the mutant population in the iconic storyline X-Men: Days of Future Past and its 2014 movie adaptation, where they successfully exterminate all mutants in a post-apocalyptic timeline. No mutant character has been introduced canonically in the MCU itself as of yet, but the Sentinels could join the MCU sooner than expected, which would expand the franchise in some unexpected but interesting ways.
Related: Who Are The Actual Villains In Ms. Marvel?
Although the perceived threat of mutants won't be a thing in the MCU for a long time, the basis for the Sentinel program already exists. Ms. Marvel reveals that Damage Control took advantage of the Stark drones they confiscated from Peter Parker in Spider-Man: No Way Home and programmed them
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