Characters played by Robert Guillaume
Dr. Eli Vance
Characters played by Robert Culp
Dr. Wallace Breen
Characters played by Louis Gossett Jr.
Vortigaunts
Characters played by Michelle Forbes
Dr. Judith Mossman
Characters played by Merle Dandridge
Alyx Vance
Characters played by Mike Shapiro
G-Man
Barney Calhoun
Characters played by Harry S. Robins
Dr. Isaac Kleiner
Characters played by Jim French
Father Grigori
The Fisherman
Characters played by John Patrick Lowrie
Sniper
Citizens
Odessa Cubbage
Griggs
Characters played by Mary Kae Irvin
Citizens
Characters played by Ellen McLain
GLaDOS
Administrator
Overwatch
Characters played by Tony Todd
Vortigaunts
Uriah
Characters played by John Aylward
Dr. Arne Magnusson
Characters played by Adam Baldwin
Sheckley
MIRT
Citizens
Characters played by Mike Patton
The Anger Sphere
Characters played by Gary Schwartz
Heavy
Demoman
Characters played by Grant Goodeve
Engineer
Characters played by Nathan Vetterlein
Scout
Characters played by Robin Atkin Downes
Medic
Characters played by Dennis Bateman
Pyro
Spy
Characters played by Rick May
Soldier