X-Men: Most Powerful Villains Missing from Marvel Movies 2025

This feature rounds up seven of the most formidable X-Men antagonists still missing from Marvel Studios films, explaining their powers, comic history, and why they would shake up the MCU. From cosmic-scale threats to ruthless masterminds and reality-warpers, it outlines ideal story arcs, potential heroes to oppose them, and what their arrival could mean for future phases, release timelines and fan-casting.