Zoe Saldana, Sigourney Weaver and Sam Worthington are returning for the follow-ups, which are set to begin hitting theaters in 2020.

Though the plots are being kept under wraps, Chaplin will play Varang, a strong and vibrant central character who spans the entire length of the installments. Cameron said that each of the four sequels will be able to stand alone, but will together create a saga.

Avatar 2 is set to open on Dec. 18, 2020; Avatar 3 on Dec. 17, 2021; Avatar 4 on Dec. 20, 2024; and Avatar 5 on Dec. 19, 2025.

The original 2009 film, praised for its advanced technology and world-creation, earned $2.8 billion to become the top-grossing film of all time at the global box office.

Chaplin, who is the granddaughter of Charlie Chaplin, also starred in the Tom Hardy series Taboo and was seen on the big screen in the romance The Longest Ride. She is repped by Troika in the U.K. and Magnolia Entertainment.