Josh Brolin's Thanos won't be revealed until Guardians of the Galaxy is actually playing in theaters, but a new featurette has our first glimpse at Marvel's big bad villain sitting in his throne while he looks down on Nebula and Ronan. It's a 'blink and you'll miss it' moment found in a behind-the-scenes look at the relationship between mean green Gamora (Zoe Saldana) and her blue skinned rival Nebula (Karen Gillan). Watch the actors and filmmakers discuss this unique pairing, which is sure to end in an epic fight, then check out the whole movie in just two weekends!

Peter Quill finds himself the object of an unrelenting bounty hunt after stealing a mysterious orb coveted by Ronan, a powerful villain with ambitions that threaten the entire universe. To evade the ever-persistent Ronan, Quill is forced into an uneasy truce with a quartet of disparate misfits-Rocket, a gun-toting raccoon, Groot, a tree-like humanoid, the deadly and enigmatic Gamora and the revenge-driven Drax the Destroyer. But when Peter discovers the true power of the orb and the menace it poses to the cosmos, he must do his best to rally his ragtag rivals for a last, desperate stand - with the galaxy's fate in the balance