Fire replaces water as the elemental character in James Cameron’s “Avatar: Fire and Ash.” It’s even weaponized by Varang (Oona Chaplin), the ruthless leader of the volcano-dwelling Ash People, in their war against the rest of the Na’vi…

Fire replaces water as the elemental character in James Cameron’s “Avatar: Fire and Ash.” It’s even weaponized by Varang (Oona Chaplin), the ruthless leader of the volcano-dwelling Ash People, in their war against the rest of the Na’vi…