ATLAS and P-body

Portal 2 is slated to include a full-length co-op campaign separated from the singleplayer campaign with Chell, also consisting of tests supervised by GLaDOS.

Overview

 * The two characters that will be used by the co-op players are to be two yet unnamed bipedal robots, one modified from a personality core, the other from a Sentry Gun.


 * Very little is known about them so far, but Valve is considering making one masculine (possibly the personality core-based) and the other feminine (the Sentry Gun-based).


 * Each robot is to have its own Aperture Science Handheld Portal Device and the capacity to transport through the portals created by the other.

Behind the scenes

 * The two robots were first introduced during the Portal ARG, in one of the ASCII art images given by the BBS. In that image, actually concept art for Portal 2, the robot made from a personality core is holding an Aperture Science Handheld Portal Device, and they hold each other's hands (this gesture is apparently a sign of innocence more than an indication of romance between the two).


 * The masculine robotic voice heard during the retconned end of Portal is unrelated to these robots, as it is the voice of the party associate robot, originally planned to appear at that point, but removed in Portal's original release.


 * These two robots are likely unrelated to the Military Android mentioned in Portal, as they are made from scraps.

List of appearances

 * Portal
 * Portal ARG
 * Portal 2