Chapter 1:

Hello everyone! I've written a few fics in the past, posted or not so I have some experience here. I was inspired to write this by a picture I saw on Pinterest, and realized what an amazing crossover this would make. Please let me know what you think, I'm open to opinions and constructive criticism. I'll post the link of the picture I was inspired by down below. Enjoy this first chapter and the many more to come!

Even before Tony opened his eyes he knew that the light was blinding. The lights in his room were not supposed to be this bright. Options swarmed around in his head before he finally decided to open his eyes. When he did, he found himself in a room filled with bright lights and white walls. Before the initial panic set in he did a further assessment of the room. He stood up and saw that the room was huge, and there was some kind of device on a pedestal in the middle of it. Curiosity taking over, he walked towards it, and deduced that it was some kind of weapon, a gun type weapon that looked oddly familiar.

As Tony walked towards it he saw a logo, a logo that he recognized and suddenly he knew where he was- and it didn't make him feel much better. Aperture Laboratories. Tony felt a shiver go down his spine. Something that didn't happen very often. But despite his fear, he picked up the gun.

"Now if I'm right, which I often am, this would be-" Tony shot the gun towards the wall and an orange portal appeared on the wall, "-a portal gun! A rather interesting piece of technology, always wanted to take one of these for a spin." He shot a blue portal onto the wall opposite to the orange portal. "Here goes nothing." Stark ran full speed into the portal seeing himself from behind, running into the portal in front of him and so on. When he appeared on the other side of the room, the scientist in him had to grin despite his fear and confusion.

Thinking back on it, Tony hadn't had any contact with Aperture Laboratories in years- so why was he here? Didn't Aperture close down a couple years back too? So what the hell was he doing here? And how? So many unanswered questions. Tony thought back and remembered someone who may be around to get some answers, though he wasn't particularly keen on talking to her (if she was even active).

"Hey! Anybody home up there? I had some questions and I heard that you were the girl to talk to." Silence. "Hello...?"

"Well well well. The great Tony Stark. You're confused. How may I help you?" For a computer voice it sounded incredibly sarcastic, and female.

"I know you- you're..."

"It'll come to you."

"Doesn't matter. Where am I? How did I get here?" He started looking for an exit out of the corner of his eye, because he was fairly certain he was being watched. He decided that stalling might be his best chance.

"You know very well where you are. It's been a while since you've last been here of course. And you must allow me to introduce myself. My name is GLADoS. You know that of course... But as to how you got here. I got bored with the one test subject I have here, there's simply only so much you can do with her, and I require the best of course, and so I located you when I found you in my database."

"Are you saying that there's only one other person in here? I knew that this place had closed down a few years ago- but where did everybody else go?"

"Hmm," GLADoS purred with delight, "that's right. You missed out on all the fun. The minute I was put in charge I flooded the whole place with neurotoxin."

Tony blanched. Neurotoxin. GLADoS. Names he remembered now with all too much clarity. "So what are you gonna do? Keep me here for endless testing? That is your job right?"

"No Mr. Stark, you mistake me. I hold you in the highest regard, it is my honour to test some one of your intelligence. I will test you here for the benefit of science, and not for some kind of petty vengeance for you know, the past."

Alarms were ringing in Tony's head although he tried to keep a straight face as he knew he was being watched. An insane homicidal wanted to test him, and knowing quite a bit about said computer, he immediately knew that he had to get out of here as soon as he could, and began an escape plan.

"And now Mr. Stark," GLADoS announced as a door in the wall slid open, "let us begin."

And now the link I promised: pin/326511041711565747/ Feel free to follow me on Pinterest by the way, I'd much appreciate it by the way! :)