We don't know how large his role will be in the upcoming film, which picks up where "X-Men: Apocalypse left off. It will focus on Jean Grey (now played by "Game of Thrones" star Sophie Turner) discovering the dark side of her powers and transforming into the dangerous Phoenix.
Series regulars Jennifer Lawrence, Michael Fassbender, James McAvoy and Nicholas Hoult, will also return, as well as "Apocalypse" additions Turner, Alexandra Shipp (Storm), Tye Sheridan (Cyclops) and Kodi Smit-McPhee (Nightcrawler).
Also joining the film in an unknown role, THR reports, is Lamar Johnson of Canadian series "The Next Step."
Production begins in Montreal this week and the movie will be out November 2, 2018.