A/N: God its so hard to write with school on my mind. hopefully by the time I post this it will be winter break already. Oh and before I forget, for those of you who don't know, Atlas's common nickname is 'Blue' and P-body's is 'Orange' due to their eye colors. And a quick shout out to my friend Howard ***: School is a real pain in the a$$ man. I feel ya.

Chapter 4

. The surface wasn't nearly as much chaotic as they thought it would be. Atlas was running up the hill until P-body stopped him with her arm. 'what is it?' Atlas asked in his special robotic language. 'look,' P-body points. Atlas looks in suprisement. In front of him was a huge city on the side of a mountain with high walls. What was even more suprising was that there were dark figures swooping around with the noise of what sounded like a riot. Atlas looked down at the PDA which GLaDos had given them. He chose the target status option and suprisingly instead of showing 'target status unavailable' it gave a full diagnostic of the scouting turret's status. Atlas read over the details and checked the scout log. He sighed in frustration as they would now have to deal with civilians. Last he heard was that humans were in a war with aliens and were loosing.

. He and P-body ran up to the castle walls. P-body took out a laser drill and started cutting through. When a hole opened, both blue and orange stared in amazement. Instead of the sight of a human riot, they were greeted by a sight of what appeared to be an invasion of insect-like ponies on the colorful regular ponies. Atlas looked down at the PDA tracking systems.

'Its that way' he pointed.

Orange took out her portal gun, shot an orange portal on the ground and a red portal on a building near their target's destination.

A random changeling soldier was commencing attack on the city when he looked up and say 2 creatures jump out of the castle walls. The changeling didn't have any time to process this thought because as he stopped in wonder, an earth pony managed to knock him out cold with a frying pan. !BONG!

Blue was still looking at his PDA when Orange slapped him on the head and pointed at the turret they were looking for. It was stained green and hovering around the area firing at the dark insect-like ponies splattering guts and insides until it spotted them.

"Hello fellow Aperture Science AI," greeted the turret.

'Scout Turret, We um, are here to retrieve you from falling into the wrong hands or causing outside interference,' muttered Atlas in gibberish which the turret could understand due to all three of them being products of Aperture.

"Sorry. Kind of too late to stop,"apologized the turret.

P-body sighed (can robots even sigh?). 'well this just makes our job much harder. Can we please all just leave?'

"I will not leave until helping new friends," the turret said as it went back to shooting down the invaders.

Atlas and P-body just stood there not knowing what to do until the changelings swarmed in.

"Hey! those two creatures are friends with the other creature!" The leader of the charge yelled." Get them!"

Blue and Orange ran around in panic as the changelings bit, kicked, and scratched at them. This continued for about 13 seconds before P-body activated and EMP burst wave which was one of the many new temporary installments GLaDos gave them. The changelings all immediately fell to the ground paralyzed.

. 'Oh...right...We also have those new things,' said Atlas ' I guess this just makes it easier.'

'Hmmm...I wonder what else we have?' wondered P-body as she ran a self-diagnostics checking what they had.'Wow, the lady in charge really doesn't joke around when it comes to safe security.' she said in amazement at how many new installments they now had.

"Can you have help friends inside castle?" asked the turret

'Why us?'Blue asked

"I am just a turret. I am not designed for help."it responded" You with your more diverse and unique designs could probraly help." I send you full knowledge of situation.

The information was downloaded to their data bases as the turret sent a telepathical message concerning the situation to them.

Blue and Orange ran inside the throne room to check up on the ponies. They were all knocked out cold.

'What should we do!?'Orange asked in panic of not knowing what to do.

Atlas took out his PDA and ran a diagnostic scan on the ponies. He calmed down in relief as to the only thing wrong was such exhaustion leading to unconciousness. Atlas chose the option 'Best course of action using current inventory and options available'. The PDA quickly went over all possible actions and came up with one in a nanosecond. it read: 'use the Mann. co military field medic medigun v7.6 to revive targets.' Atlas said outloud.

P-body processed this and a moment later, a panel opened on her back where a metal nozel extended outwards followed by a tube which curved around so that Orange could grab it. She quickly went over the tutorials and aimed the nozle at the first patient which was a purple pony with wings and a horn. A red glowing beam came out, striking the pony as she began to stir.

. The last thing Twilight remembered before passing out was Celestia freeing all of them from their prisons. Her head hurt but was quickly neutralized by a suprisingly warm comforting feeling. She slowly opened her eyes and was greeted by two other creatures. One had a spherical body with a eye with long appendages coming out of it's body and was holding a strange pad and was poking at it fiercely while the other one had an oval shaped body with an orange eye with similar appendages and was holding a strange device with a nozzle which was emitting a red beam on her.

"Wha?" she began in confusion. She suddenly noticed that she wasn't tired anymore and that she was okay. In fact, better than okay. She felt energtic and full of life.

. The creature with the beam device cut of the flow to her and turned towards her friends.

"Hey! what are you doing?" she said as she tried to approach the thing. The creature with the blue eye stepped foward and put out a hand as if to say 'stop' and said something in gibberish which twilight could not understand. "Huh?" she said in confusion.

The creature with the device spoke something to the creature with the blue eye and gave the thumbs up. It then aimed the device at the rest of her friends, flicked a special switch on the device and turned it on. This time however, instead of one beam, multiple beams came out touching her friends.

"Stop! Whatever you're doing!"Twilight said in concern. But what happened next was nothing short of a miracle. All her friends woke with a start gasping for air. "What did you do to them?" she asked the creature. It spoke more jibberish and gave her the thumbs up. Twilight was still unsure of what the creature was trying to say."Can you creatures even understand me?"she asked. The creature nodded in response.

Twilight noticed her friends getting up now fully awake. "That feels a lot better!" Rainbow dash said as she stretched.

"Sister, how are we recovered so fast?"Luna asked Celestia "in a condition like that we should have taken much longer to recover yet I feel completeley fine."

"I don't know Luna. Mabye it was..." she said before she noticed the two creatures standing there. One broadcasting red engery towards all of them.

"Wait. Did you two just heal all of us?"Twilight asked the orange one.

In response, the creature nodded again and gave another thumbs up.

The two then struck up a 15 second conversation and proceeded to walk outside.

"Twilight, what happened?"asked Cadence. Twilight responded",I'm not too sure but I think those two things just healed us somehow which is also strange because even the best doctors in Equestria couldn't heal that fast."

"Oooo! Then its time to through a 'Thank you for helping us feel better party for those two'."Pinkie said.

"Pinkie dear, if you haven't noticed, we are in the middle of a changeling invasion." Rarity stated.

"Oh, right." Pinkie said in dissapointment.

"Well then girls lets kick some but!" Rainbow Dash yelled as she flew out the wall.

"Right behind yah sugah!" Applejack followed.

"I don't like this one bit,"complained Fluttershy.

The elements of harmony ran out the wall to push back the changelings.

"Luna, Cadence, let us go free Canterlot's gaurds!" Commanded Celestia. The three princesses dissapeared in a flash.

. On the outside, the mane 6 were fighting the same way they did as they had at Princess Cadence's wedding, pushing back the invading hive. Only this time they had the help of the turret and two other creatures. The blue one had pulled out a device from who knows where and placed it on the ground while doing something with it. The orange one pulled out something of what seemed to be a weapon. The device it was holding was shooting blasts of electrical energy. Changelings that weren't Immediately killed or vaporized were knocked out or paralyzed. What was even more amazing was that the turret and the two creatures weren't fooled by the changeling's disguise. When the orange one fired at a panicking unicorn, Twilight stared in horror only to see a changeling get paralyzed with electricity and drop its disguise as it fell.

Could the creatures and the Turret both be of the same thing? Could they all be 'robots' as the scientists called them? Her suspicions were confirmed when the turret hovered over.

"Turret. Are those your friends?"Twilight asked as she continued to blast at changelings. "They are the testing track bots Atlas and P-body designed for testing purposes back at Aperture," responded the turret as it also continued to shoot only that the turret killed while Twilight simply stunned enemys. She felt very uneasy seeing so much blood and death but she couldn't afford to dwell on it. "Which ones which?"Twilight asked. "Blue one is Atlas and Orange one is P-body," stated the turret. "Alright then, what is Atlas doing?" Twilight asked. "They said that device would be a suprise," the turret stated. "You can understand them? How?" Twilight asked. "Atlas and P-body speak a special robotic morse code language that only Employees and AIs at Aperture can understand," explained the turret.

. What happened next was a tide turn for the current battle. A large flash appeared out of nowhere and in its place stood Princess Celestia, Princess Luna, Princess Cadence, and all of Canterlot's royal gaurd and militia.

"Apologies princess. for not being able to prevent this," said the real head of guard in shame.

"Do not worry. Was not thy fault. Now let us push back these invaders." Luna said.

The next half hour went by quickly. The militia, lead by the two sister princesses, fought of the changelings as civilians cheered and galloped towards the castle which turned out to be a rallying point for the battle. Cadence joined Twilight and the rest of the mane six in their own battle and the turret combined with P-body defended Atlas and the strange device.

"Twilight friend!" shouted the turret "Suprise is ready!"

She nodded and said "I hope whatever your planning works out!"

. Atlas finished up and activated a switch. The device (which was as tall as P-body, had many wires running around it, and a Tesla coil on the top) screen turned green and a small force field formed around the device.

. Twilight stared as if to say 'are you serious? THATS your plan?'. But then the force field expanded outwards at a really fast rate. Everypony flinched as they saw it coming but the shield just passed through them harmlessly. The changelings on the other hand weren't so lucky. The moment the shield touched them, those who were disguised dropped their disguise and were hit by a strong electrical current. The shield pushed the changelings back out like a moving brick wall. Some unlucky changelings were even vaporized by the shield. It kept expanding until it reached the size of the original shield (which was a magical barrier). (A/N: think of it as a huge Portal 2 Emancipation Grill and you'll know what it looks like but this one doesn't neccacarily vaporize. It was designed to keep things out)

. Everypony paused for a moment as to what happened. It wasn't long before everypony burst into a loud cheer.

The battle was won.

To Be Continued...

A/N: well I hoped you enjoyed it guys. Please leave a comment for improvement and suggestions. I'm open to ideas.