"Avengers: Doomsday" recently released a new trailer, featuring rapid-fire close-ups of several characters' eyes. One pair of female eyes was accompanied by fiery red energy, sparking speculation about the potential appearance of Jean Grey and the Phoenix Force, though the trailer did not reveal the character's identity.
This scene immediately follows Patrick Stewart's shot. Based on the visual characteristics of the female eyes and red energy, ComicBook.com speculated that the character might be Jean Grey, with the energy effect potentially related to the Phoenix Force. Currently, these interpretations remain based on analysis of the trailer footage.
Famke Janssen, who portrayed Jean Grey in the early live-action "X-Men" films, previously stated that Disney had not contacted her to return for the Marvel Cinematic Universe. Therefore, even if the character in the trailer is confirmed to be Jean Grey, current information is insufficient to confirm the actress.
The officially announced cast includes James Marsden as Cyclops, Ian McKellen as Magneto, Patrick Stewart as Professor X, as well as Gambit, Nightcrawler, and Mystique. The story involves the multiverse, leaving room for combinations of characters from different ages or timelines; whether Jean Grey, the Phoenix Force, and Famke Janssen will participate still awaits official confirmation.