Avengers: Doomsday Teaser Leaks, X-Men Officially Join MCU!

• A leaked third teaser for 'Avengers: Doomsday' has gone viral, confirming the X-Men's long-awaited entry into the MCU.
• The unauthorized clip, recorded in a theater, shows the Xavier School in flames and features Patrick Stewart as Professor X and Ian McKellen as Magneto.
• Cyclops appears with a powerful optic blast, and flashes of Sentinels hint at large-scale mutant conflict.
• This integration follows Disney's acquisition of 20th Century Fox, resolving previous character rights issues.
• The film, a major multiverse event with Robert Downey Jr. as Doctor Doom, is scheduled for a December 2026 release.

Why It Matters: Leaked 'Avengers: Doomsday' teaser confirms X-Men's MCU arrival, featuring iconic characters and major plot hints.