Netflix’s sci-fi saga 3 Body Problem is expanding its cast for season two, bringing in another Game of Thrones veteran, Alfie Allen (Jojo Rabbit), into the fold.
Allen, best known for his role as Theon Greyjoy in Game of Thrones, has been cast in a recurring role for the upcoming season. He joins returning castmate Liam Cunningham (The Last Voyage of the Demeter) and other Game of Thrones alumni who’ve appeared in the series, including John Bradley (Moonfall), Jonathan Pryce (The Two Popes), and Conleth Hill (Suits), who made a cameo in season one.

The series, created by Thrones showrunners David Benioff and D.B. Weiss (Metal Lords) alongside Alexander Woo (The Terror: Infamy), also welcomes David Yip (The Chinese Detective) and Jordan Sunshine (Wonder Pets) to the season two cast. They’ll appear alongside previously announced new additions Claudia Doumit (The Boys) and Ellie De Lange (Blueback).
Production on season two is now underway in Budapest, Hungary, and the show has confirmed which first-season characters will make the leap into the next chapter despite the series’ major time jump. Notable returning cast members include Jess Hong (Inked) as Jin, Benedict Wong (Doctor Strange) as Da Shi, Eiza González (Baby Driver) as Auggie, Jovan Adepo (Watchmen) as Saul, Saamer Usmani (Inventing Anna) as Raj, Cunningham as Wade, Marlo Kelly (Dare Me) as Tatiana, Sea Shimooka (Arrow) as Sophon and Josh Brener (Silicon Valley) as Kent.

Netflix has kept the season two storyline under wraps, offering only a cryptic teaser: “As the alien invasion nears, humanity prepares – on Earth and elsewhere.”
3 Body Problem adapts the acclaimed sci-fi trilogy by Chinese author Cixin Liu, chronicling humanity’s first contact with an alien civilisation across centuries. Season one debuted to critical acclaim and topped Netflix’s global TV charts for weeks. The streamer has since greenlit two additional seasons to complete the trilogy’s arc.
While Netflix hasn’t announced an official release date, season two is expected to premiere in 2026.
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