Lieutenant James Vega (voice)
Treeya (voice)
Messner (voice)
Milque (voice)
Essex (voice)
Nicky (voice) (as Josh Grelle)
Captain Toni (voice)
Brood (voice)
Mason (voice)
Admiral Hackett (voice)
Kamille (voice)
April (voice)
Christine (voice)
Archuk (voice)
Captain David Anderson (voice)
Dr. Liara T'Soni (voice)
Additional Voices (voice)
Additional Voices (voice) (as Terri Dotty)
Additional Voices (voice) (as Talisen Jaffe)
Additional Voices (voice) (as Brandon Jerome Bristow)
Additional Voices (voice) (as Matt 'Kabooom' Cocuzza)
Additional Voices (voice) (as Troy Williams Jr.)
Additional Voices (voice) (as Egg Nebula)
Additional Voices (voice) (as Chad 'Gouffahtts' Cocuzza)