Chapter 2 of this story. Introducing the core oc's I created in 5 minutes flat for this story. Sorry, if you don't like Oc stuff in portal stories. I just couldn't really find a canon character that fit the roles well... Again, please point out any grammatical mistakes I make.

Enjoy :)

The small core slid along the management rail slowly. It was thinking. It had picked up a virus in a part of the facility several weeks ago, and had investigated it, disguised, hidden and protected behind a stronghold of firewalls. You can never be too safe with those things. After thorough examination, the core determined it to be a sort of Trojan horse virus. A very well made one, the core concluded to herself. It was almost invisible. No wonder it had laid out of sight for so long. Still, a virus was a virus, and a Trojan horse could mean someone else was trying to control the facility. And every AI in this place knows exactly what happens when someone else takes over. She thought to herself. I would not be surprised if it was that core's stupidity that let this virus in in the first place. As the core's primary function was programming and creating and maintaining programs, she resolved to get rid of it. A little thing, Easy as pie, right? Wrong. No matter what she did, it simply did not go away. And her antivirus was one of the best in the facility, under the central AI. Nothing she tried worked, and eventually, after what could translate to a week of trying in vain to get rid of it, she did what she never thought she would do- and gave up. Taking a scan of the virus into her databases, she resolved to get a better understanding of the virus and find a way to eradicate it. Unless the Central Core got to it. She hoped so.

"Hey, Evelina Hacker! Ya coming or what? I've been shouting at you fer five minutes now!" the core shook itself out of thought and looked at the silvery optic staring right at her.

"Sorry Tecchie, got lost there." Eve shifted herself on the rail, and slid towards the other core. It had black casing, instead of the usual Aperture white. The core rolled it's optic, and turned and started forward again. The two chatted away about random trivial matters for a while. They went through a corridor, along a rail above a catwalk and had turned along a rail that ran parallel to a redemption line. The core with the silver optic plugged itself into a mechanical arm, and proceeded to rescue a few turrets and useful-looking mechanical parts off the redemption line. Eve watched as he plucked another turret off the line.

"I'm different." It told them in a soft, high-pitched voice. Eve pulled her lower optic cover up in a smile. She'd always found something adorable about the turrets. The defective ones made her laugh as well. It was almost enough to forgive the fact that they shot at anything that moved. One's she hadn't re-programmed to not shoot at anything that moved anyway. The core deposited the turret on a metal plate next to a broken window leading into a dark, panelled room. After fishing out two more defective turrets and a small heap of spare robot parts, he disengaged himself off the arm back onto the management rail. Eve went past him into another corridor. She went forward, then took an abrupt turn left though a small gap in the wall above a door, designed to be the perfect size for a core to fit through.

"[177_EVELINA] [pass=19466]"

She shouted out, breaking on the rail to halt just before she crashed into an Aperture Science Weighted Storage Cube that was leaning on the rail, preventing any core from getting though into the room beyond. There was an electronic buzz, and a panel rigged to respond to the identification of the core and correct password shifted to move to cube out of the way, leaving the path beyond clear for her to pass. She went into the room. There were a load of other cores in the room, all of different colours and voices. There were management rails all over the ceiling, allowing the cores to access every part of the room, and several frameworks with robotic arms that cores could plug themselves into to manipulate objects, recharging receptacles to recharge, separate places behind panels for a core to sleep mode in peace, and generally anything a core could wish for. The room itself was quite large, with the broken window leading out onto the redemption line at one side, and several tables at the other. A turret sat, it's laser pointing at the door to be a nasty surprise to any unwelcome visitors. A metal plate was attached to a rail on the floor, and was used to transport things around the room.

"[146_TERENCE] Technology_ [pass=19466]"

Eve turned around and saw the other core enter. The panel waited for him to move out of the way before blocking the entrance with the cube again. He went to the window, plugged himself into a frame and proceeded to lift the pile of turrets and metal onto the transport plate. She turned around and surveyed the room. A group of cores were playing poker with nuts and bolts as the chips whilst a few others disappeared through a missing panel into another room. Two were having a conversation and one was in the corner, spouting out a string of 'facts' that most of the time, didn't even make sense. Eve sighed at him. She'd offered to fix his core corruption many times but was always met with "The Fact Core is not corrupt. The Fact core is 100% fully functional and the Fact Core's facts are wholly accurate and very interesting." Yeah. Say that when you start spazzing about and say "twelve twelve twelve." Over and over again.

She went over and plugged herself into a recharging receptacle. They also doubled up as gateway into the code of aperture, but apparently only she could find a way to hack into it.

"Fact- Bees have 5 eyes. The two larger ones a-a-are used to create feather pillows and the six smaller f-feet ar-r-r-rats cannot throw up." Sometimes what that core says is more confusing than a paradox.

GLaDOS watched the two robot step into the chamber. Orange presented the device.

"Good. Plug it in." a receptacle opened from the floor. P-Body plugged the device in, and stood back. The panels of the chamber flipped expectantly as the files downloaded to GLaDOS. The two robots stood nervously, waiting to see if what they had done would please her or not.

"Good work. I'll leave you be for now, I have a few files to look through." The robots blew up, and were reassembled in testing chamber to stay out of GLaDOS's way. GLaDOS took a look at the new files, and was genuinely impressed. There were many, many files to look through, more than she expected from the old systems down in the old Aperture labs. She started sifting through them one by one, discarding useless ones into one folder and storing any that were interesting in another. She looked through them all thoroughly, but unfortunately, nothing on any hidden human vaults yet. She looked at another file, then was about to discard it when

"Wait a minute, what was that?" she looked again at the title.

"Human-Shape Android Blueprints"

Human shaped robots? GLaDOS, interested, looked down and read through the article.

Possible prototype designs for humanoid robots. Below were some detailed sketches of some designs.

Upload personality core to compensate with lack of test subjects. The human personality traits of the core will have similar, if not identical reactions to a test chamber. May replace human testing completely if successful.

Below were some more notes one explaining that the project was abandoned in early stages due to lack of budget and unavailable nanotechnology. But it was the compensate for lack of test subjects that caught her attention. Of course! It was so obvious! Personality core were literally storage of human personalities, and, as she had known from past experiences, have the ability to make decisions, react to different situations, and generally act... human. GLaDOS created a new folder to store the blueprints in, and started scouring for anything else on the subject. It was obvious now there were no more humans left in the Enrichment Centre, but she now had what seemed to be a perfect solution. Nanotechnology- she had access to that. And there was no need to worry about budget. Plus, it would be a use for all of the spare cores laying around. But which core would go first?

If GLaDOS had a face, a sinister smile would currently be spreading over her features. She knew exactly who would be first. And she would make it as horrific experience as possible.