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Leaked 'Avengers: Doomsday' Teaser Spotlights Legacy X-Men in Devastated Xavier Setting

The phone-shot clip circulated ahead of Marvel’s theater-first rollout, confirming on-screen appearances by Professor X, Magneto, and a dramatic Cyclops moment.

Overview

  • Footage reported by multiple outlets shows Patrick Stewart’s Professor X and Ian McKellen’s Magneto together, with Magneto’s somber lines about mortality over scenes inside a dilapidated X-Mansion.
  • The teaser includes the Xavier School in flames, Sentinel attacks, and a powerful Cyclops optic blast that has driven much of the online reaction.
  • By Monday morning, higher-resolution AI-modified versions and stills of the leak were widely posted across social platforms despite the original’s low quality.
  • Some coverage cites on-screen text stating “The X-Men Will Return in Avengers: Doomsday” and identifies Cyclops as James Marsden, though these specifics have not been broadly verified.
  • The leak arrives during a theater-first, rotating-preview campaign that previously saw other teasers surface online, as the film targets a December 18, 2026 release.