GLaDOS is the AI overseering the Apeture Science enrichment center. Rude, sarcastic and a liar. She hates Chell, because Chell was the one who murdered her. 
RANK / OCCUPATION:
Aperture Science Central Core, Highest of Authorites
WEAPONS:
Neurotoxin
Rocket Sentries
Sentry Turrets
EQUIPMENT:
Personality Constructs
PA system
Multitasking Arms + Panels
Pneumatic Diversity Vents
Security cameras
Automatic portal generating frames
Aperture Science Dangerous Object Removal Claws
1 yellow opical eye