Ming-Na Wen

Dr. Aki Ross (voice)

Donald Sutherland

Dr. Sid (voice)

Alec Baldwin

Cap. Gray Edwards (voice)

Ving Rhames

Sgt. Ryan Whitaker (voice)

Steve Buscemi

Off. Neil Fleming (voice)

Peri Gilpin

Off. Jane Proudfoot (voice)

James Woods

General Hein (voice)

Keith David

Council Member (voice)

Jean Simmons

Council Member (voice)

Matt McKenzie

Major Elliot (voice)

John DeMita

BCR Soldier #1 / Space Station Technician #2 / Additional Voices (voice)

Matt Adler

Additional Voices (voice)

Steve Alterman

Additional Voices (voice)

David Arnott

Additional Voices (voice)

Cathy Cavadini

Additional Voices (voice)