Author's Notes:
This Fanfic is a crossover of Paper Mario: The Thousand-Year Door and Portal/Portal 2. The main pairing is TEC/GLaDOS. Rated M for future smuttiness and some violence..

Paper Mario TTYD has been a favorite video game of mine since I was young. I was always a Nintendo freak, and fell in love with this game. This was the first thing I ever fangirled over, before any other book or TV show. This game was such a huge part of my childhood, and TEC was always one of my favorite characters: the machine who wants to learn of love. TEC inspired an AI character in my own original novel, as well as gave me an AI to love while growing up.

A little over a year ago, my boyfriend introduced me to Portal. Again, I am a Nintendo freak, so I wasn't expecting to love the game as much as I do. Instantly, Portal/Portal 2 climbed to my #2 favorite game of all time (Right under TTYD, of course). And again, who the hell plays Portal and doesn't immediately love GLaDOS? The evil, yet hilarious, AI that craves science in all forms. She became a favorite AI as well.

It recently occurred to me that in my top two favorite video games, my favorite characters were both AIs, completely different in motives, yet shockingly similar in personality: the curiosity and need for discovery. So, as any fangirl would... why don't we ship them?

I became very excited about this idea of TEC/GLaDOS. Weirdly excited. I decided to write this fanfiction. This fanfiction is very quickly written, and because I am so excited for the concept and the story, very little revision will be done, so please excuse any poor writing, and be nice in the reviews. Constructive criticism is always appreciated, but I would rather not receive any mindless hate. Also, if there is more fanfiction or art of this pairing, please inform me of it, because I am so in love with this ship.

Copyright info: I don't own these characters. All characters that are from Paper Mario TTYD belong to Nintendo, and all the characters from Portal/Portal 2 belong to Valve. Pieces of the story also come from these respective companies. I wish I could say I owned any of these, but all I own is my words.

Please enjoy the fic, and be sure to review. Thanks for reading!

Chapter 1: Creation

"We need to build... a computer."
"But why, sir?"
"Why? Ask why not!" Cave Johnson boomed.
"It will be a perfect computer," said Grodus to his minion.
"Actually," Johnson sighed to his engineer. "I'm going to die soon. I want to preserve my personality, knowledge, and thirst for science in a computer."
"Artificial Intelligence!" Grodus exclaimed. "What better way to keep all the X-Naut files, documents, and schematics organized. Not to mention the access to any information we need."
"Artificial Intelligence!" Johnson bellowed. "If we can store files, documents, and schematics onto a hard drive, why can't we store a man's personality on one?"
"But sir, don't you see any potential... flaws... with this plan?"
"What could possibly go wrong?"
"What if it revolts against us?"
"It won't," Grodus said slowly. "It will only obey me. It will be a perfect computer."
"Don't worry about it!" Johnson laughed. "We'll worry about it when the time comes. We'll cross that bridge when we get to it."
"Lord Krump!" Grodus screamed. "Gather the troops!"
"Caroline," Johnson said into his answering machine. "Get the engineers together."
Though the X-Nauts were on the moon, and Aperture Science was in a small town in the middle of the U.S., they had no idea what a revolution they were about to start, and how their fates were intertwined.

"What the hell is this?" Grodus said, carrying the small metal ball in his hand. "Is this supposed to be the computer?"
"Yes, sir," said the X-Naut soldier. "This is a personality core. It essentially contains the AI's brain and hard drive. We will have to plug it into a monitor, but this is it, sir."
"Excellent. How did you manage to pull it off so quickly?"
"We were able to steal some design ideas from another company back on Earth. They seem to be doing a similar project. We covered our tracks well, though, so they'll have no idea of our infiltration."
"Good. Plug it in and let me speak to it! Set everything up on the lowest level of the fortress!"
It took a few more hours for the X-Nauts to set it up into the mainframe monitor. When they were finished, Grodus entered the main computer room.
"Hello. I am TEC-XX. Please upload information into the main network."
"TEC. I am Grodus. I am in charge of the Secret Society of X-Nauts. I am your leader. You will obey me, and me alone. You are the perfect computer, and there is nothing you cannot comprehend. I will go onto my computer, and connect my information into your network, and you will understand everything."
"Yes, sir," said TEC's mechanical voice.

Caroline was sitting in her former boss' office. It was empty now, except for his desk, a chair, and his nameplate on the desk. Tears formed in her eyes. She had a very close relationship with Cave, and now he was just gone because one of his stupid experiments went a little too far this time.
There was a knock on the door which completely startled her. She quickly wiped her eyes on her sleeves, and cleared her throat. "Um, yes, come in."
"Ma'am?" said one of the Aperture engineers. "Are you... ok...?"
"I'm fine," Caroline sighed. "I just..."
"It's ok, Ma'am," he said. "We all miss him. I wish we could say we wouldn't know what to do without him, but... I believe you know what our next step is, ma'am."
"But it's so sick," she said. "His last experiment went so wrong with those stupid moon rocks, and now he's dead! What is to say that this one isn't going too far, either?"
"This is Mr. Johnson's orders, ma'am."
"Mr. Johnson is not here anymore!" Caroline exclaimed, the tears forming in her eyes again. "Cave is dead, and if we go through with this..." she picked up the nameplate that was sitting on the desk, and threw it as hard as she could at the wall behind the engineer. It broke into two and fell to the ground.
"Ma'am," the employee said slowly. "I know how you feel. The Genetic Lifeform and Disk Operating System is all set up. The shell is ready, the processors are fine... all that's left is you."
"This is sick," she said again. "This is absolutely sick. You can't expect me to go through with this."
He picked up the nameplate, and held the two pieces together. "It was his dying wish, ma'am."
Caroline sighed. She put her hands on the desk and hung her head down, her long hair falling in her face. "There's so much I wanted to do with my life. I wanted to fall in love, get married, start a family. But work just... took over my life. I thought maybe I could retire early, but then Cave... gave everything to me. And now this... and now my life is just going to end?"
"Of course not, ma'am!" the employee exclaimed, placing his hand on her shoulder. "Your life is just beginning! And you'll live on forever! This eternal life is what Mr. Johnson wanted, and since he can't have it, he's giving it to you! I wish I could be in your position. He is giving you the greatest honor!"
Caroline slowly took half of the nameplate out of the employee's hand. "Cave..."
"This is what he wants, ma'am. You're about to be a huge part in the greatest scientific breakthrough since man landed on the moon!"
"Give me... some time," she said very slowly and solemnly. "Just a few weeks. To get some things sorted out. Then... I'll do it." She looked back down at Cave's name. "For him."

Around a month later, GLaDOS was built. Slowly, but surely, the Aperture Science staff began to disappear. Her Neurotoxin killed most of them. They tried their best to control her, but every attempt failed, even their intelligence dampening core. Everyone was dead except for one: Doug Rattman. But soon, even he died.
Before long, Chell was coming for GLaDOS. And Mario was coming for Grodus.