Tricia Helfer... Kilian Qatar - Nod General

Michael Ironside... Jack Granger - GDI General

Josh Holloway... Ajay - Nod Intelligence Officer

Jennifer Morrison... Kirce James - GDI Intelligence Officer

Billy Dee Williams... Redmond Boyle - GDI Director
Joseph D. Kucan... Kane

Grace Park... Lt. Sandra Telfair

Kiko Ellsworth... Nod Commander

Shanon Cook... Cassandra Blair

Courtenay Taylor... Scrin A.I.

Stefan Marks... Nod MCV, Nod EVA, Venom, Training Instructor (voice)
John Huck... William Frank

Shauntay Hinton... Brittany Bhima
Joe Cappelletti... GDI Soldier, GDI Transport

Brian Bloom... Militant / Sniper Team Leader (voice)rest of cast listed alphabetically:

Steven Jay Blum... (voice)
Billy Brown... (voice)

Jesse Burch... (voice)

Art Chudabala
Jim Connor... (voice)

Travis Davis... (voice)

Mark Derwin... (voice)
Dragon Dronet
Keith Ferguson... (voice)

Peter Giles... (voice)
Roger Jackson... (voice) (as Roger L. Jackson)
Peter Jessop... (voice)
Kristen Kairos... (voice)
Neil Kaplan... Emissary, Stealth Tank, GDI Soldier

Andrew Kishino... (voice)
Daniel Kucan
Scott Lawrence... (voice)

Madison Mason
Phil Morris... (voice) (as Phillip Morris)

Mark Moseley... (voice)
Christopher Reid... (voice)

Masha Sapron
Beng Spies... (voice)

Stephen Stanton... (voice)
Robert Steinman... (voice) (as Rob Steinman)

Julian Stone

Skyler Stone... (voice)
Keith Szarabajka... (voice)
Kari Wahlgren... (voice)
James Kevin Ward... (voice)
Rick Weiss... (voice)

Adrienne Wilkinson... Zone Raider (voice)
Dave Wittenberg... (voice)

Ron Yuan... Dr. Takeda

随手从imdb考的。http://www.imdb.com/title/tt0848263/fullcredits#cast 好像imdb防外联，头像看不到，反正有小红X的就是在imdb挂上号了。