Cores

Cores are mechanical spheres that mostly appear near the end of Portal and Portal 2. They were developed by Aperture scientists specifically to regulate GLaDOS's merciless behavior, such as refraining her from flooding test chambers or other vital parts of Aperture Laboratories with Neurotoxin, and/or to control the entire facility.

Personality Cores
As the name implies, each Core has their own unique personality and behavior, which gets copied over the central core.

Morality Core


The Morality Core

Central Core
The Central Core is hardwired into the maintain of Aperture Laboratories and given the power to control and regulate the entire facility. Such power includes overseeing the events that occur, creating and stockpiling test chambers, and so on. Unlike the personality cores, the central core does not have to retain a spherical shape, just uncorrupted.

Wheatley

 * See Wheatley.

Corrupted Cores
Due to technical difficulties over time, a core may be automatically labeled as a Corrupted Core and would to be subject to being automatically disposed of. However, if the corrupted core is the central core, a substitute core must be present in a core receptacle to initiate a core transfer. Once a substitute core is found, both core must or disagree to the core transfer procedure. If one agrees while the other disagrees, the transfer process cannot occur unless a stalemate resolution associate is present to press the stalemate resolution button, while will initiate the core transfer process once the associate has returned to the core transfer bay.

Space Core


The Space Core