Sigourney Weaver will appear in all three of the ‘Avatar’ sequels. Her character Grace Augustine will be brought back to life by director James Cameron for the films. However, little information has been revealed on what form and role she will have in the film. She claimed in an interview that throughout the films, her character will change. The villain of the film played by Stephen Lang will also make appearances in the upcoming films. The lead characters from the last film, Sam Worthington and Zoe Saldana have been confirmed for all the next installments of ‘Avatar’, the first of which will be released in US cinemas in December 2016.