Marvel fans are already theorizing how Patrick Stewart, Ian McKellen, and James Marsden's X-Men will be integrated into Avengers: Doomsday
However, other fans think that Avengers: Doomsday will involve a timeline incursion that will merge the Fox X-Men timeline ...
Marvel unveils the gigantic cast for Avengers: Doomsday
Avengers: Doomsday and Secret Wars are two of the tentpoles of Marvel’s upcoming phase 6 of the Marvel Cinematic Universe.