Characters played by Ozioma Akagha
Alyx Vance
Characters played by James Moses Black
Dr. Eli Vance
Characters played by Rhys Darby
Russell
Characters played by Tony Todd
Vortigaunts
Characters played by Mike Shapiro
G-Man
Characters played by Ellen McLain
Overwatch
Characters played by Cissy Jones
Olga
Characters played by Rich Sommer
Larry
Drone
Combine Soldier
Characters played by Kim Dickens
Scientist
Characters played by Isaac C. Singleton Jr.
Combine Suppressor
Characters played by Jason Vande Brake
Combine Grunt
Characters played by Michael Schwalbe
Combine Charger
Wallhammer
Various Combine Soldiers
Characters played by Rajia Baroudi
Combine Ordinal
Characters played by Rick Zieff
Combine Guy
Characters played by Tom Taylorson
Zombie
Characters played by Mum Ior
Civilian Mother
Characters played by Nick Woodbury
Lamarr