(Image courtesy of Marvel Studios)
On Wednesday, November 11, Anthony Mackie, the MCU’s third Captain America, unexpectedly let slip that Paul Bettany would return as Vision in "Avengers: Doomsday." Now, another update has revealed that Hugh Jackman’s Wolverine and Ryan Reynolds’ Deadpool, both long rumored to appear in the movie, were also involved in the production.

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This latest development did not come from another media rumor or an accidental cast spoiler. Instead, the Writers Guild of America’s records list Reynolds and Jackman among those who contributed additional literary material to "Avengers: Doomsday." Neither is one of the movie’s primary screenwriters, but credits like these generally indicate that actors contributed dialogue or material for their own characters—offering the strongest confirmation yet that both were involved in the film.
They were not the only surprise names in the writing credits. Destin Daniel Cretton, director of "Spider-Man: Brand New Day" and "Shang-Chi and the Legend of the Ten Rings," is listed as well, suggesting he may have helped shape material involving Shang-Chi or Spider-Man.