Atlas

“

Blue, you go first. Click to listen — GLaDOS

”

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 Chell killed her the first time, during Portal. 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.

During the final phases of testing, GLaDOS reveals that, while the Cooperative Testing Initiative has its uses, she needs human testing for science, not robots. GLaDOS reveals that there are humans locked away, deep within the ancient Aperture facilities. There the bots will be tasked with navigating the old test chambers and unlock the massive vault containing the humans, seemingly kept in place by some form of cryogenic storage. By doing this, they 'save science.' However, almost immediately after the robots unlock the room containing the test subjects, they are destroyed.

Gallery

Atlas' first-person view.   Atlas' Primary-fire portal.   Atlas' Secondary-fire portal.   Both of Atlas' portals.   Atlas prototype, with a Roll Cage.   Atlas image from the official Aperture Science Collaborative Disposition Test.   Atlas icon from the official Steam Portal 2 group.   Atlas eye icon from the official Steam Portal 2 group.

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.

See also

• Co-op
• P-body
• Collaborative Disposition Test