1
Caroline
2
GLaDOS
3
Chell
4
Wheatley
5
Space Sphere
6
Oracle Turret
7
Cave Johnson
8
P-Body
9
Companion Cube
10
Atlas
11
Intelligence Core
12
Curiosity Core
13
Fact Sphere
14
Morality Core
15
Doug Rattmann
16
Adventure Sphere
17
Defective Turret
18
Anger Core
19
Frankenturret
20
Sentry Turret
21
Grady
22
Greg