You thought the humans were bad in the "Avatar" movies, wait till you meet the Ash People. New Pandora tribes arrive in first ...

Evil Na'vi. And the Ash People are former Na'vi who have forsaken Eywa," the blue-skinned humanoid tribe's goddess, explained Saldana.

James Cameron's sequel will see Jake Sully (Sam Worthington) and Neytiri (Zoe Saldaña) encounter two new Pandoran tribes.