Josh Brolin has been tapped to play the villainous Thanos in Marvel’s Guardians of the Galaxy, sources confirm.

Thanos, who first appeared in the post-credits scene in The Avengers, is a major villain in the Marvel universe and is also expected to appear in The Avengers sequel Age of Ultron in 2015.

Directed by James Gunn, Guardians of the Galaxy opens Aug. 1 and co-stars Chris Pratt, Zoe Saldana and Bradley Cooper.