According to Latino-Review on Friday, it was officially announced that "The Goonies" and "Jonah Hex's" Josh Brolin has been cast as the voice of the Mad Titan Thanos in James Gunn's "Guardians of the Galaxy." The first appearance of Thanos in the Marvel Cinematic Universe was in "The Avengers" where Damion Poitier turned and grinned when he was told that challenging humans would mean "courting death."
The agenda of Thanos isn't entirely known. For those who have seen "Thor: The Dark World" and stayed around for the credits, The Collector is seen taking on the burden of a mystical object provided by the Asgardians Sif, played by Jaimie Alexander and Volstagg, as portrayed by Ray Stevenson. After all, it would be too risky to keep both the Tesseract and said artifact too close to one another. They are likely to be synonymous to the Infinity Gems in the comic book world.
Thanos' origins exist during a moment in his life where he lived among The Eternals on a moon orbiting Saturn. He was coined "The Mad Titan" due to his attempt to annihilate the entire human race with the Infinity Gauntlet. The Gauntlet contained six gems capable of manipulating time, space, reality, power, mind, and even someone's soul. This is a highly dangerous combination once brought together, but it is unknown how the Marvel Cinematic Universe's version will play out with Thanos' agenda.
An article in Bloomberg Businessweek revealed a dialogue between Marvel Studio's production president Kevin Feige and Gunn which indicated an Act 3 scene that described the environment in which Thanos would likely be in. A "rocket throne" of sorts that a fan could visually bring to life after putting together the description. For those who are unfamiliar with the artistic works in the marvel comic books, Thanos sits upon a throne floating in space not unlike the one seen after "The Avengers." It was mentioned it would even be possible that this role could take the villain into "Avengers 3."
For starters though, go see "Guardians of the Galaxy" on Aug. 1.