As said in summery, please review. I did my best to read through and correct mistakes, but if I missed any point them out please. Not really any action yet, this is more of a build up.

Enjoy :)

It has been almost a year since she'd let the lunatic go. Four months since she found that vault full of humans, and one since the last one met his doom in a pool of acid. She was currently searching through database after database, seeing if there were any other hidden human vaults. But alas, there were none to be found. GLaDOS gave a synthesised sigh, and turned her attention to the test the cooperative testing initiative were doing. They had been fooling around with the exersion funnel ever since she started scouring the databases for more human test subjects. Now it seemed that she would need them to find another database in old Aperture.

"Orange, Blue, I need you two here now." The two robots spontaneously exploded, and the reassembly machine picked up the parts and quickly reformed them in the Central AI Chamber. The two warbled and clicked something to each other in that strange language of theirs, and scrambled over to take position in front of GLaDOS, P-Body knocking ATLAS over in the meantime. ATLAS stood up and knocked P-Body's core out of it's frame. GLaDOS sighed, waited patiently for them to stop squabbling, and began.

"I need you two to go down into old Aperture and find me more data. I will give you an adapter to store any information you find. Remember, you are looking for anything to do with the word 'Human'. Do not look at anything else, and go a quick as possible." The two robots nodded their cores and clicked something. GLaDOS stared at them.

"Do not fail me." With that, the two robots exploded, and the reassembly machine scrambled to gather the parts and shift them to the right part of the facility.

Dust fell from the far away ceiling every now and again, falling to the floor. Catwalks wound everywhere, like a crazy giant metallic spider web, connecting every part of the vast underground maze that was old Aperture. In gaps that littered the concrete floor, one could see miles and miles of even older facility. But it wasn't this that ATLAS and P-body were after. The two robots clanked along a catwalk, looking around at any sign of offices. The taller one held a device that could be plugged into an old computer. It was designed to store files in a readable format that GLaDOS could use. They carried on, navigating the catwalks through the labyrinth. The shorter of the two stopped suddenly, causing P-body to crash into it. It warbled something and pointed to a large block of what could be some offices. P-body nodded it's core in agreement, and the two set off along the catwalk towards the block.

The door to the block slammed open. ATLAS stepped over the threshold into the gloomy room. In the light of it's blue optic, it could make out the shapes of several monitors on desks around the room. P-body stepped in behind it, and looked around. Both activated their night vision setting, and the computers appeared in a green-tinted clearness. Both robots looked around the room. It had computers in it, which was exactly what they were looking for. They didn't recognise the area either, meaning that there were new files to be found here. ATLAS went to the nearest computer and pressed the button that it knew would turn it on. Nothing. The computer was long dead. The robot called the other over. It chirruped something and went over to the computer. ATLAS gestured to the device and the computer. P-body plugged it in, and the device made the computer come to life. The two waited for it to boot up, optics fixated to the screen until is finished loading, and started looking through the files for anything to do with 'Human'. They found 3 files, and uploaded them to the device. With that, they unplugged it. The computer died, the screen going blank. ATLAS stared at the reflection of his optic in the black glass screen for a moment, then turned to plug the device into the next computer.

The cooperative testing initiatives were down in old Aperture dragging up any new files for GLaDOS, leaving her with nothing to do but wait. She took the time to deeply scour the facility for any anomalies in the coding. Whilst scanning the turret redemption line, she took to thinking. What would she do if there were no more humans that could be tested? Send orange and blue up to drag down new test subjects from the surface? They might accidentally drag in her though, so it wasn't the best idea. Design new testing robots? Re-program blue and orange so they weren't so routine at testing? Not test at al- No. That was not an option. The only thing she could do right now was wait, and hope the cooperative testing initiative came back with something useful. She snapped her attention back to the facility scan. So far, nothing has come up except for a few cores going around on the management rails. But just now, she had picked up something foreign. A virus. GLaDOS immediately set out to scan and identify this virus immediately, and prepared several removal programs to squash it out of existence. She identified it as... what?

- Virus not identified -

No. That is not possible. GLaDOS had the largest constantly updated dictionary of viruses and malware in the world. Nothing could escape her antivirus and break through her firewall. Nothing.

Except, apparently, this little clump of coding.

How could something so small get through her firewalls? She attempted to eradicate it, but every time, it still remained. Shifted slightly. Slightly different. But still there. It annoyed GLaDOS greatly. She checked how long it had been there. 12 months, 11 days, 5 hours, 37 minutes and 48 seconds. She traced that date back in her memory and-

Oh no. It infected the system when the moron was in charge. I should of known that he would- Even thinking about that little idiot had made GLaDOS feel rage course through her system. I should of known he wouldn't of maintained the firewalls. GLaDOS attempted to get rid of the virus a few more times, but, failing to, gave up. It didn't seem to be doing any harm. If it had waited a year to fry her circuits, it could wait a little longer. She turned the attention away to another part of the facility.

She should have used everything to get rid of it. It had, in fact, been waiting for the Genetic Lifeform and Disc Operating System to find it. To try and get rid of it. It now knew. Knew what this AI's defences were, and knew a way to get through.