Atlas



Atlas (referred to as Blue by GLaDOS), is P-body's short and stout companion, and is one of the two bots GLaDOS built for the Cooperative Testing Initiative, which was devised to phase out human testing. GLaDOS created the testing initiative after. Along with P-body, the two bots are pitted against a series of tests built by GLaDOS herself, utilizing the many different aspects encountered by Chell in single-player.

Both Atlas and P-body are voiced by Dee Bradley Baker.

Trivia

 * In the pre-release video "Bot Trust", the prototype Atlas in the "Unilateral Force-Induced Isokinetic Breakfast Trials" wields the same frying pan found in Left 4 Dead 2 and Team Fortress 2, some other Valve games.
 * In Portal 2 and it's promotional videos, Atlas' name can be seen written both as "Atlas" and "ATLAS", showing inconsistencies from Valve as far as the bot's name is concerned.