A new cast member has joined 3 Body Problem Season 2, expanding the ensemble of Netflix’s sci-fi series. Known for a prominent role in Game of Thrones, the actor reunites with creators David Benioff and D.

3 Body Problem is a sci-fi series based on a book of the same name by Liu Cixin. The show follows the decision of one woman that impacts the world for decades to come. 3 Body Problem is co-created by the creators of Game of Thrones, David Benioff and D. B. Weiss, along with Alexander Woo.

Netflix's '3 Body Problem' is expanding its cast for season two, bringing in another 'Game of Thrones' veteran, Alfie Allen, into the fold.