Zoe Saldana and Sam Worthington Zoe Saldana and Sam Worthington

The three upcoming Avatar sequels are slowing taking shape.

Original stars Zoe Saldana and Sam Worthington have both signed on to reprise their roles in the three new movies, Deadline reports.

Top moments: 2014 Golden Globes

Worthington played Jake Sully, a wheelchair-bound Marine who finds new life on the alien world of Pandora with the Na'vi people, including Saldana's Neytri, a Na'vi huntress.

Avatar 2 and the two untitled sequels that will follow will all film back to back. Avatar 2 is set to hit theaters in December 2016, and the following films will be released in December 2017 and 2018, respectively. Director James Cameron is co-writing and producing all three sequels.

Are you excited for the new movies?