A/N: Welcome to MU: Portal. Mike and Sulley wake up in Aperture laboratories and they are being forced to participate in various puzzles, or "Tests" in order to "Improve Science". With the Portal guns in their hands, they'll do what they have to in order to escape the dreaded Aperture science labs. Enjoy.

Sulley woke up rubbing his temples and he got up but fell to his knees.

"Woah, I feel dizzy" Sulley said. He then got up and looked around him to see he was in a room that had two white pods, one was opened, and Mike was sleeping in the other one that was closed. The rest of the room was a nice bright color of white and he looked at the glass wall to see his reflection to see he was wearing an orange jacket and orange pants with weird white boots with flexible black wire on the back of the boots that touched the floor. Mike was wearing the same thing.

"Where are we?" Sulley asked himself. He went over to the pod Mike was in and opened it and began shaking Mike awake.

"Mike, Mike wake up!" Sulley shouted softly, Mike woke up and looked around him.

"Sulley, what are we wearing and where are we?" asked Mike. Sulley shrugged and then began looking towards the ceiling when they heard a beeping sound and then a machine voice began talking.

"Hello, and again, welcome to the Aperture science computer and enrichment center. We hope your brief detention in the relaxation vault has been a pleasant one" said the female machine voice. Mike scoffed and spoke.

"That's the understatement of the century" Mike said. The voice began speaking again.

"The specimens have been processed, and now we are ready to begin the tests, proper"

"Tests?" Sulley asked Mike. He just shrugged.

"Before we can begin, however. Keep in mind that although fun and learning are the primary rules involved in enrichment center activities. Serious injuries may occur. For your own safety, and the safety of others, please refrain from..." the lights began blinking and the voice began getting distorted, it was kinda scary. Then the lights were bright again and the voice was working again.

"I'm back. The portal will open in 3, 2, 1" an orange hole appeared in the solid wall and the two friends looked at each other. They then walked through the portal and came out a blue portal that was in one of the walls outside the room they were sleeping in.

"Do we know how long we were asleep inside those things?" Mike asked.

"No, and since when did we agree to be lab rats for this enrichment center thing or whatever it is?" Sulley responded with another question. They then walked through a circle shaped door that opened up and they ended up in another room. The door shut behind them and they were alone in the room with a locked circle door, a big red button on the floor, and a big metal cube inside a tube built to the ceiling of the room.

"Okay, now what? Are we stuck in here again like the last room we were in?" Mike asked with a hint of sarcasm in his voice. The tube then opened up and the cube fell on the floor. Sulley then went over to the big red button and avoided the cube. He stood on top of it and the door opened.

"Let's go!" Sulley said. Then he ran off the button and the door closed.

"What happened?" Sulley asked in outrage as the door shut on him. Mike then stepped on the button but then took his foot off and then the door opened and shut.

"I think we gotta use that metal box thingy to keep the door open" Mike said. Sulley then shrugged, it was a good idea. He picked the cube up and dropped it on the button. It opened and stayed open, no closing.

"It worked" Mike said plainly.

"Let's go" Sulley said.

"Excellent! Please proceed into the chamber lock after completing each test" the machine voice said through the intercom. Then there was an elevator with a grid of holographic particles guarding the elevator, but they were able to walk through just fine and they got into the elevator.

"Notice the inconstant particle field across the exit. This Aperture science material will vaporize any unauthorized material that tries to cross over. For instance, the Aperture science weighted cube" the voice stopped talking again.

"This has got to be one of the weirdest days I've ever experienced in my life" Sulley said.

"You and me both, pal. You and me both" Mike sighed. They then got out the elevator and walked down the hallway. And then they were in a room with one Orange portal and a blue portal that kept moving around.

"Please place the Aperture science weighted cube on the button to proceed to the next test" said the machine voice. They walked through the orange portal when it changed to the room, where the cube was. They then were trapped in there until the blue portal opened up again and they stepped out and waited for the button room to come up on the portal.

"Just throw it, I don't wanna wait forever" Mike said. Sulley threw the cube and it landed on the button with large success.

"Please move quickly to the exit" said the machine voice. The two friends then jumped through the portal once it showed the door that lead to the elevator and then got into it. The elevator then opened up and they were in a viewing room that showed some sort of white device making blue portals. The machine voice spoke again.

"You're doing very well. Please keep in mind that the taste of blood on your tongue is not part of any test protocol. But it is an unintentional side effect" said the voice before the door on the right wall opened up.

"That's good to know" said Mike sarcastically. They then went through the door and walked down the concrete steps. A blue portal then opened up on the wall and they stepped through it. They were now in one large room and the white device was still in the center of the room. Sulley took the device off and saw that there was a handle and trigger, it was a gun of some sort.

"Very good. You are now in possession of the Aperture science hand-held portal device. With it, you can create your own portals. These gateways have been proven to be completely safe, the device however is not. Do not touch or look into the operational end of the device. Thank you" said the voice. Sulley then held the gun to a wall and he shot a blue portal at it.

"Let's go" Mike said. Sulley nodded and they stepped through the portal and ended up on a floor where the door was. They walked through the elevator and proceeded to the next test.

A/N: Oh yeah, now they're thinking with portals! So they have been taken captive by Aperture labs and they are being used like lab rats to complete various puzzle tests. So, Sulley has his own Portal gun, Mike might get his own sometime soon. More to come in the next update! Please review, thanks!