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. Atlas has a blue eye, but his eye was red in early designs. 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.