Rosanna Arquette (Professor Lina (voice)),
Beverly D'Angelo (Interrogator Wright (voice)),
Danny Glover (President Chen (voice)),
Mark Hamill (Elder Orin (voice)),
Ron Perlman (Elder Vorin (voice)),
Dennis Quaid (Roven (voice)),
James Garner (Doron (voice)),
Amanda Peet (Maria Montez (voice)),
Danny Trejo (Elder Barum (voice)),
Brian Cox (General Hemmer (voice)),
Luke Wilson (Jim Stanton (voice)),
Chad Allen (Terrian Scientist (voice)),
Tom Connolly (Technician Williams (voice)),
David Cross (Giddy (voice)),
Chris Evans (Stewart Stanton (voice)),
Justin Long (Senn (voice)),
Timi Prulhiere (Terrian 1 (voice)),
Evan Rachel Wood (Mala (voice)),
Brooke Bloom (Technician Quinn (voice)),
Michael Scovotti (Lt. Evans (voice))