In Avatar: Fire and Ash, Jake Sully (played by Sam Worthington) is the central protagonist, a former Marine now leader of the Na'vi, who, along with his family (Neytiri and children), confronts new threats from humans and a violent, fire-wielding Na'vi tribe, dealing with deep grief from his son Neteyam's death and internal conflict as he tries to protect Pandora, becoming more of a warrior to cope with his trauma. 