Who voices both Atlas and P-Body in Portal 2?

Who voices both Atlas and P-Body in Portal 2? Dee Bradley Baker voices both robots.

Atlas and P-Body are the two playable robots in Portal 2’s cooperative campaign. Unlike most speaking characters in the series, they communicate mainly through mechanical sounds, grunts, and expressive robotic noises rather than dialogue. Baker performed those vocal effects for both characters, giving each robot a distinct presence despite their limited speech.

The answer is sometimes confused with the actors associated with Portal 2’s major humanlike characters. Stephen Merchant voices Wheatley, while J. K. Simmons voices Cave Johnson; neither voices the cooperative robots. Ellen McLain voices GLaDOS, including her interactions with Atlas and P-Body.

The robots were created for GLaDOS’s Cooperative Testing Initiative and can repeatedly be dismantled and rebuilt during testing. Their names are styled as ATLAS and P-body, while GLaDOS usually calls them Blue and Orange. The co-op campaign originally considered human characters, including Mel, but the developers replaced them with endlessly respawning robots.