So there isn't a Guardians of the Galaxy section yet so this is just in the Avengers category until there is one (I emailed them asking but I have no idea how long it'll take)

DISCLAIMER: I own nothing or they would already have crossed over in film.

Review!

"Jarvis," Tony called out, giving Thor - who was sitting near the toaster waiting for his PopTarts - a fright. "Where's Bruce?" Not taking his eyes off the project he was tinkering with.

"Dr Banner is currently in his bedroom, asleep, as it is 4.32am, Sir."

"Wake him up. Get him here." Tony said, reaching for a screwdriver. He suddenly looked up at Thor. "Why are you awake?"

The God shrugged; "I need not sleep as much as mortals." Tony grinned and took a gulp of his coffee.

"Come see this, then." He gestured him over and turned his back. At that moment a very sleepy, and very annoyed, Bruce came slouching in.

"What is so important that you had to wake me up at 4:30 for?" He asked, heading over to the coffee machine.

"I finished!" Tony shouted gleefully and proudly displaying the contraption. It was small, about the size of Bruce's head, and just looked like a black box. But, most worryingly, it had smalls veins of a blue material flowing all around and through it.

"That isn't- That isn't the Tesseract, is it, Tony?" Bruce asked gingerly, to which Thor's head whipped up and he stepped back a bit.

"No," Tony assured, laughing slightly. "It's Starkanium." He tapped the arc reactor to show what he meant.

"Okay," Bruce began, more curious than cautious now. "Then what is it?"

Tony sighed in exasperation. "I have definitely told you about this already. But it's the thing I was working on for the past month." He picked it up and Bruce noticed it looked much heavier than Tony was letting on. "It's kind of a teleporter. It'll stretch anywhere in the entire universe, detect any human being outside of this solar system and bring them right back to earth."

"Why would you need- Oh, yeah." Bruce nodded to himself in understanding; Of course Tony would want to make sure there were no repeats of when he went through the portal.

"So, I just press this button-" He turned the box around to show a big red button on the back "- And whoever's out there will just appear where this nozzle thing is aimed." On the front of the box was indeed something that could be described as nothing other than a 'nozzle thing'.

"Can it send that person back?" Bruce wondered out loud, his mind whirring with all the possibilities of cheap and environmentally friendly space travel.

"Nope. If they're human they're teleported back to Earth." He put it back down with a loud clunk. "Hey, Thor this could be useful for you so Jane can travel back if she ever gets kept on Asgard again." Thor grinned and clapped Tony on the back.

"This is most ingenious, Friend Stark!" He boomed, spraying PopTart crumbs all over the place. The sheer volume of Thor's voice woke up the remaining three Avengers, all three sleeping in places other than their beds- Clint in the vents (near Tasha's room), Natasha sleeping on the wardrobe below the vents of her room so she could tackle Clint when they woke up, and Steve was sleeping on the balcony so he could draw the sunrise.

"What is going on?" Clint asked sleepily, silently blundering in, followed by Natasha. Steve appeared from the lounge with serious bed hair.

The two spies were wearing their pyjamas, Clint wearing a vest top and boxer shorts, Nastasha wearing what looked like one of Clint's shirts and blue leggings. Steve, of course, was actually wearing pyjamas (checked blue and white bottoms with a plain white shirt).

Looking round, Tony noticed only he and Thor were wearing clothes. Bruce was wearing similar to Clint, except the boxer shorts were replaced with his super stretchy purple shorts in case of accidentally Hulking out in the night. Tony then realised that what he was wearing couldn't really count as clothes- his special jeans and vest top he wore for working in his lab were tattered and torn so much that the jeans were basically shorts and his arc reactor could pretty much be seen through the shirt. Not to mention the oil and grease stains all over them.

Thor looked respectable (albeit strange) as always in his armour and cape, Mjolnir on the counter next to where he was leaning.

"Tony's made a thing." Bruce replied simply and tiredly. "It's cool."

Instantly the three of them looked wary, but approached nonetheless. "What's it do?" Steve asked.

Tony explained happily and, when he was done, Clint stared at the button. "How do you know it works?"

"I just do." Tony shrugged.

"Okay, but have you tested it?" He pressed eagerly. Bruce, Natasha, Steve and Tony all sighed in unison.

"Well, I doubt that there are any humans beyond our solar system at this moment in time." He glanced, amused, at Clint.

"Okay, fine but how do you know the button works?" He edged closer. "What if there's an emergency one day and one of us accidentally ends up outside of this solar system and when we go to press the button to bring them back it gets stuck?"

Tony blinked slowly. "You just want to press the button." He said knowingly.

Clint grinned. "What does it matter if there are no humans outside of this solar system anyway?" Tony rolled his eyes and moved back with his arms open, inviting Clint to press the big red button.

00000000000000000000000000000000

"Gamoraaaaaa..." Rocket whined as the ship rocked from side to side. "It's that lever, not that one."

Peter and Drax stood back, watching Rocket teach Gamora how to fly the ship. It was one of those lazy days where nothing was really happening pretty much anywhere in the galaxy. It was originally Peter teaching Gamora, but Rocket soon took over saying Peter didn't know how to fly his own ship.

"Well, your hands are too short. You didn't point clearly enough." Gamora snapped stubbornly as Rocket sighed.

"I'm Groot." said Groot from his corner. He was still not fully grown from the battle, but he was out of his pot and standing on his own, just taller than Rocket now. His voice was incredibly high pitched, though, because of his size.

"Yeah, yeah," Rocket replied to the two of them.

They were hovering a few metres above the ground of some abandoned city on a random planet somewhere. Gamora held tightly to the various joysticks and Rocket pointed out the buttons she needed to press, the ship jerking up or down or left or right occasionally.

She finally managed to get the ship to glide upwards (nearly going 180° and landing them on their backs before Rocket settled it quickly) and so Peter, Drax and Groot went to strap themselves into seats. However, despite Rocket's best efforts, the ride soon turned much too bumpy to be safe.

Gamora even let go of the controls and let Rocket take over, but still the ship rocked and rattled dangerously. "What's going on?" Peter asked, wanting to get out of his seat and help but if he did he knew he would probably just fall straight into the wall.

"I have no idea." Rocket replied, fiddling with the controls as they went sky rocketing to the planet's atmosphere and then fell into a nose dive. "I don't think this was her; this is from outside!"

That removed more than half of Peter's common sense. He unbuckled his belt and tried to get to the front, but an unseen force suddenly pulled him into the side of the ship. He hit his head, hard, and blinked a few times to stop himself from blacking out. He crumpled to the ground and reached up to feel blood on the back of his head.

"I am Groot!" Groot called in a panic, growing his arms out to reach Peter and pull him back, but that unseen force was still there and Peter was stuck against the wall.

Peter realised that the ship was moving in the direction he was being pulled; instead of him being thrown back by the force of some kind of blast, he and the ship were attracted to something. There were no windows where he had gotten stuck so he began to edge along the wall to the front to see.

His vision swayed when he tried to stand up so he settled for crawling. "Peter!" Gamora called, holding out her hand from her seat. Even his hand was attracted to whatever was on the other side of the ship's wall, and lifting his arm towards her was like trying to lift a ton of bricks. Shaking his head, he shuffled along the floor and finally reached the window.

The breath left him as he looked; there was a bright blue hole, just floating in the air. It was seconds away, and the ship was going to go through it. With a burst of strength Peter threw himself backwards and off the wall.

That was a huge mistake, he found, as the entire ship spun on its side so that the floor was now the thing zooming towards the blue hole. Although he couldn't see, he knew exactly when they passed through it as a feeling of utter cold passed over him and the ship lit up bright blue for a moment. It was strangely beautiful, he found himself thinking, before it was over and they were hurtling towards something else.

It was easier to stand up and look out this time, because it seemed that the thing that was attracting the ship was the blue hole. It was night time outside the window, on some planet he didn't recognise. They were flying towards a massive building in the middle of a city.

00000000000000000000000000000000000

"Was that satisfying enough, Clint?" Natasha asked with a smirk.

"Aw yeah," he replied with a grin. "I honestly don't know how you resisted, Tony."

The billionaire shrugged, now studying the cube again. "What's the matter?" Cap asked. "Didn't it work?"

Tony sighed disappointedly. "There's supposed to be a kind of portal appear where the nozzle thing is aimed. Maybe it isn't calibrated right... If anyone sees a giant blue portal, tell me."

Bruce, knowing that Tony almost never got things wrong, walked around in search of the blue portal. The rest of the Avengers, realising Tony wasn't kidding, followed suit.

"Oh my god." Natasha whispered after a minute. "Guys!" She beckoned them over to the window, where something was making her glow a light blue.

Tony appeared by her side faster than anyone else. "Yes!" He pumped his fist in the air happily and gazed up at it. "Woooow. It's gorgeous." He said passionately. "Bruce, you seeing this?"

"Yes, Tony, it's not exactly hard to miss." He replied sarcastically, but he was in awe of the portal. All the Avengers had come over and were staring out the window, not caring that a few passers by had seen the portal.

Steve suddenly jumped. "Guys. You hear that?"

"Hear what?" Clint asked without taking his eyes off the portal.

"There's a- It's like- Something's coming through. It's getting louder." The rest of the Avengers simultaeneously remembered that Steve had enhanced senses and their awed expressions turned to concern.

"But there can't be any humans out of this solar system! No one's gotten that far yet!" Tony cried, leaning closer and cupping his hands around the glass to try and see closer.

"It sounds like a ship. Like a space ship." Steve mumbled, ear pressed to the glass.

"I can hear it," Clint and Natasha said at the same time. Soon, they could all hear this ominous engine. They all had their ears on the glass so they almost didn't notice when the ship actually appeared.

Steve, thankfully, had enough peripheral vision to see the ship and so he sprinted forward to push all of the Avengers out of the way and into a heap, just before the ship smashed straight in through the window, destroying almost five floors in the process.

It was a miracle none of them were hurt. The ship slid across the floor below them, what looked like the cockpit level with them on their own floor.

It scraped along, getting gradually slower until it jerked to a stop. The silence was eerie after all the noise. "Someone go see if anyone's inside."

"Of course there's someone inside. And they're human. Or it wouldn't have come through. Capsicle, you have the best people skills; you go." Tony said, scrambling to get out from under Thor's leg and Clint's arms.

"We'll all go," Natasha said firmly, holding a hand out for Clint. They trudged through the rubble and, trying not to fall down to the floor below, they reached the orange and blue ship. They heard a faint groaning from inside and some shouts, but they were too muffled to make out the words and the voices kept interrupting each other; the only thing that was made clear was that there was more than one person on board.

Cap gingerly stepped forward and knocked on the glass. They couldn't see in because of the dust on the glass, not to mention the fact that the crash had turned off the power and it was now 5am.

"Hello?!" Clint yelled. The voices stopped. Steve heard some whispering, but couldn't make out individual words. Eventually that stopped, too, when someone called back.

"Um, hi?!" A male voice called. "Who are you?!"

They distinctly heard a female voice, this time talking to the male and not addressing the Avengers. "That isn't important!"

The male shouted again, "Okay, um, we're stuck in our ship! The power's out!"

Almost immediately, Thor used Mjolnir to smash the cockpit windows, which was probably not the smartest move seeing as the glass rained down on the people in there.

The Avengers stepped back at the sight of the people inside- a green woman, a huge blue and red man, some kind of tree creature, a raccoon wearing clothes, and what seemed to be the human laying on the floor with what looked like a serious concussion and a few broken bones, at least.

They were all crowded around the man lying on the floor, but when the raccoon and the big man caught sight of the Avengers they stood up defensively. "Who are these clowns?" The raccoon asked, brandishing a weapon too big for his body and shocking the Avengers with his voice.

"We're the Avengers," Steve said calmly. "We aren't going to hurt you- this was all a mistake."

"Rocket," the green woman said warningly. "Listen to him."

"But-" the raccoon began.

"Peter's hurt! They are our only chance at help! Put the gun down." The raccoon reluctantly lowered the weapon and scampered back to the man and woman. "I'm Gamora," she told the Avengers. "That's Rocket, Groot, Drax," she pointed at the raccoon, the plant thing and the blue and red man and then directed her attention back to the injured man. "This is Peter. You may know him as Star-Lord."

"Who?" Tony asked. The injured man groaned in annoyance (or pain- they couldn't tell).

I had decided to break this into three chapters (Avengers, Guardians, both) kind of thing but then that was way too short so that means that the next chapter is not written yet so no regular updates sorry! (Unless I get super motivated to write this like all the time but idk we'll just have to wait and see!)

(If anyone's here for my other fics I'm so sorry I just suck at updating and this idea wouldn't leave me alone and Kidnapped Heroes will probably be the next one updated but I'm suffering from serious writer's block on that one so sorry!)

Pleeeeeease review! Did I get the characters right? Does the plot make sense? Was it good? Was it awful? I'll be glad to hear anyone's opinion!