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him. With the attack repelled, Neytiri and Jake reaffirm their love as she sees his human body for the first time.

Selfridge and the remaining corporate personnel are expelled from Pandora, while Jake, Norm, and several other scientists are allowed to remain. Jake is seen wearing the insignia of the Omaticaya leader. The clan performs the ritual dedicated to Eywa that permanently transfers Jake from his human body into his Na'vi avatar.



Cast and characters

* Sam Worthington as Corporal Jake Sully. Sully, the film's protagonist, is a disabled former Marine who becomes part of the Avatar Program. His military background helps the Na'vi warriors relate to him. Cameron cast the Australian actor after a worldwide search for promising young actors, preferring relative unknowns to keep the budget down. Worthington, who was living in his car at the time, auditioned twice early in development, and he has signed on for possible sequels. Cameron felt that because Worthington had not done a major film, he would give the character "a quality that is really real". Cameron said he "has that quality of being a guy you'd want to have a beer with, and he ultimately becomes a leader who transforms the world".

* Stephen Lang as Colonel Miles Quaritch. Quaritch is the head of the mining operation's security detail and is the main antagonist of the film. Fiercely loyal to his military code, he has a profound disregard for Pandora's inhabitants that is evident in both his actions and his language. Lang had unsuccessfully auditioned for a role in Cameron's Aliens (1986), but the director remembered Lang and sought him for Avatar. Michael Biehn, who was in Aliens, read the script and watched some of the 3D footage with Cameron, but was ultimately not cast in the role.
* Sigourney Weaver as Dr. Grace Augustine. Augustine is an exobiologist and head of the Avatar Program. She mentors Sully and is an advocate of peaceful relations with the Na'vi, having set up a school to teach them English.