1
GLaDOS
1
Caroline
3
Chell
4
Sentry Turret
5
Companion Cube
6
Curiosity Core
7
Oracle Turret
8
Doug Rattmann
9
Cave Johnson
10
P-Body
11
Frankenturret
12
Morality Core
13
Adventure Sphere
14
Atlas
15
Anger Core
16
Defective Turret
17
Intelligence Core
18
Fact Sphere
19
Wheatley
20
Space Sphere
21
Grady
22
Greg