X-Men Return in 'Avengers: Doomsday' Teaser: Cyclops Unleashes Optic Blast!

• Third teaser for 'Avengers: Doomsday' released, featuring classic X-Men characters.
• Professor X (Patrick Stewart), Magneto (Ian McKellen), and Cyclops (James Marsden) reunite from Fox's X-Men trilogy.
• Cyclops fires a massive optic blast, hinting at a central role; Sentinels possibly return.
• Marks the first full crossover of these X-Men with Avengers, Fantastic Four, and other MCU heroes.
• Massive ensemble cast includes Chris Hemsworth, Pedro Pascal, Florence Pugh, and many more.

Why It Matters: 'Avengers: Doomsday' teaser reveals classic X-Men joining a massive MCU crossover event.