Personality Cores
Central Core
The central Core(GLaDOS(Genetic Lifeform and Disk Operting System)), is the highest ranking core in Aperture Laboratories. The central core can control the entire Apertuer Science Laboratories. She is the main antagonist in both Portal and Portal 2. Other cores can be attached to the central core and actually take the role of the central core.
Portal
Morality Core
The Morality Core is one of the important cores attached to GLaDOS in Portal. It has a purple eye and two dots beneath it. It was attached to GLaDOS before she awakened Chell in order to prevent her from filling the Enrichment Center with Neurotoxin. it also keeps GLaDOS's weapons under control, such as when GLaDOS can't stop the Rocket Turret when it was incinerated. Unlike the other cores, the Morality Core is mute.
Curiosity Core
The second core attached to GLaDOS. It has an orange eye and has two dots on either side. It has the tendency to ask multiple questions frequently. The questions range to its surroundings, Chell, and to where its going.
Cake Core
The third core, the 'Cake' core, has a blue eye and three dots on either side. It rambles on about some recipe for some kind of cake, which is the cake at the end of Portal. GLaDOS does not make any references to Cake in Portal 2, which could mean the core was destroyed. Portal's ending was changed to match the Portal background comic. Click the link below to read it.
http://www.thinkwithportals.com/comic/
http://www.thinkwithportals.com/comic/
Anger Core
The last core attached to GLaDOS is the Anger Core. It has a red eye and three dots to (Your) the right. Rather than speaking, it snarls and growls at Chell (the Protagonist). Once Chell drops the Anger Core into the Incinerator, GLaDOS begins to explode. In Portal 2, because she doesn't have this core, she lacks any emotions and indications of hostility.
Portal 2
Intelligence Dampening Core (Wheatley)
The final antagonist in Portal 2, (not in Portal) is the first core to interact with Chell. he was created by scientists to render GLaDOS less dangerous. He helps you at the beginning, but when he becomes the Central core(By pressing the Stalemate button), he turns on you and does the same thing that GLaDOS does but with no hesitation.
Corrupted Cores
In Portal 2, there are corrupted cores you use to corrupt Wheatley enough to have a Core Transfer.
Space Sphere
The Space Core is one of the three, active cores that are to be attached to Wheatley for a Core Transfer. This Core continously rambles on and on and on about space and going to space. Its dream comes true when you shot a portal at the moon and was blown out to space.
Adventure Sphere
The second corrupted Core, the Adventure Core, (Calling himself 'Rick') speaks like a soldier who wants only to fight. Upon seeing Chell, he starts to like you, calling you a pretty lady. While on the moon, if you observe closely enough, one can see 'Rick' fly off of Wheatley.
Fact Core
The Third and final corrupted core, the Fact Core. It constantly states random facts that are not entirely true. He also says some things about how handsome he is.
-"Whales are twice as intelligent, and delicious, than humans." -Fact Core (HOW THE HECK DO YOU KNOW WHAT A HUMAN TASTES LIKE!!!!!!!!!)
-"Whales are twice as intelligent, and delicious, than humans." -Fact Core (HOW THE HECK DO YOU KNOW WHAT A HUMAN TASTES LIKE!!!!!!!!!)