Staff WriterJosh Brolin will be voicing the intergalactic conqueror in both upcoming films. Brolin is primarily known for his past film roles as Young Agent K in Men in Black 3, Dan White in Milk, and Brand Walsh in The Goonies. The absolutely best thing about this casting isn’t his filmography, though. Much like James Spader, who will be voicing Ultron, Brolin is well-regarded for his compelling, idiosyncratic voice. It’s deep and can be menacing enough to pull off a convincing villain, I think, and thus should work quite well with Thanos in the upcoming films! Allegedly, Brolin will also be performing the motion capturing for Thanos in both Guardians of the Galaxy and Avengers: Age of Ultron. Marvel fans, sound off! Are you excited for this casting? Check out the latest trailer for Guardians of the Galaxy below. The film is set to be released in U.S. theaters on August 1, 2014.