Atlas

“

Blue, you go first. Click to listen — GLaDOS

”

Atlas, 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 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.'

Gallery

Atlas first-person view.   Atlas' Primary-fire portal.   Atlas' Secondary-fire portal.   Both of Atlas' portals.   Atlas prototype, with a Roll Cage.

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.