Official website: http://www.alpha-themovie.com
Kodi Smit-McPhee
Keda
Jóhannes Haukur Jóhannesson
Tau
Marcin Kowalczyk
Sigma
Jens Hultén
Xi
Natassia Malthe
Rho
Spencer Bogaert
Kappa
Mercedes de la Zerda
Nu
Leonor Varela
Shaman Woman
Priya Rajaratnam
Huntress (uncredited)
Michael Kruse-Dahl
Lion Tribe #4 (uncredited)