Actors Sam Worthington and Zoe Saldana have completed deals to reprise their roles as Jake Sully and Neytiri for the next three films in the Avatar franchise, which are being made back-to-back.
The first sequel will be released in December 2016, with the second in December 2017 and the third a year later.
The Hollywood Reporter says that director James Cameron said: "Jake Sully is a rare combination of passion, strength, street smarts and soul, which requires a lot from an actor.
"Sam brought to the role a combination of sensitivity, vulnerability and strength."
Cameron continued: "Zoe captured every aspect of the character I envisioned, bringing to Neytiri a mix of delicacy, fierceness and incredible physicality. I am beyond pleased they'll be returning with us to Pandora."
The trade daily says that in the upcoming movies Jake and Neytiri have become parents.