A new story! Yay!

I still on the fence about it, but I think the paring in this story will be Ben/Albedo. I just love that couple. But I'm not sure. Let me know what you think.

And yes, this is a crossover. Generator Rex and Ben 10 are two of my favorite shows and I really wanted to write a fic about them.

Rated T until further notice

A green and black car screeched to a stop outside of a rundown warehouse on the outskirts of town, the one place that all bad guys liked to go to do their evil deeds. Kevin, Gwen, and Ben knew the route there by heart, as it seemed aliens never went anywhere else. Lights were flashing inside the building, giving the trio no doubt that they had arrived at the right place.

Kevin hopped out, an annoyed look on his face. He quickly absorbed the metal of his car, turning a dark shade of green. "You know, I'm really getting tired of this." He mumbled. "It's one in the freaking morning."

Ben got out of the car as well, wiping his eyes sleepily. He had bags under them, showing exactly how much sleep Ben had lost because of the whole saving the universe thing. "Yeah, we know Kevin. You were complaining about it the whole way here. But it's Albedo. He's not just some stupid alien who we can deal with tomorrow. If he gets back to his planet and rebuilds the Ultimatrix…" Ben paused and stretched his arms, letting out a loud yawn. "It won't be good. We might as well stop him now before that happens."

"Whatever, Tennyson. Let's just get this over with." Kevin groaned, running a hand through his hair. The two waited for Gwen to join them, but the car door didn't open. Sighing, Kevin went around and opened the passenger door to find Gwen out cold with her head resting on the dashboard. Ben chuckled. Gwen had never been one to stay up late, even when they were kids. "This isn't funny, Tennyson. We need her."

Kevin reached out to shake Gwen awake, but Ben grabbed his hand, stopping him. "Come on, Kevin. Just let her sleep. It's only Albedo. You know how tired she's been these past few days. Her Mana has been acting up. She could be more hurt than help."

"I don't know…" Kevin said warily, gazing at Gwen while she slept. "What if we need her?"

"Fine," Ben threw up his arms in defeat. "You can be the one to wake her up then. Have fun. I'm going to go save the world now." With that, Ben took off towards the warehouse, his hand hovering over his watch. Kevin looked at him, then at Gwen, and back. Sighing, Kevin slowly closed the car door and followed Ben, leaving Gwen behind.

Ben wasn't one for subtlety, and when it came to Albedo, any class he might have had when right out the window. He hit the Ultimatrix and in a flash of green light and a yell, Ben was turned into Swampfire, and promptly burned a hole into the side of the warehouse. They two boy's ran in, Ben with fire in his hands and Kevin with his hand shaped like a sword.

Inside was huge, cluttered with many tables that were laden down with many odd devices, some alien and some human. Out of the corner of his eye, Ben saw Kevin ogling over some of the alien tech. Ben knew he was itching to go over and examine the weapons, but held himself back. They had somebody to deal with.

Said person and turned around when they had answered, glaring angrily, his hand on a keyboard that was next to a portal that pulsed and glowed, swirling colors around. Albedo removed his fingers from the buttons and stepped forward, his red eyes narrowed in hate. "Benjamin Tennyson." He hissed. "I should have known you would show up. Here to ruin my plans again, just like that hero you are?"

Ben smirked. "Of course, Albedo. Don't worry, this shouldn't take too long. What's my record? Sixteen minutes?"

Albedo frowned. "Not even going to advance to an Ultimate alien, Benjamin? Am I not worth your time?"

"Please," Kevin scoffed. "Me and Ben can take you down no problem."

Albedo cocked his head to one side, surveying the two of them. "I don't believe I was talking to you, Kevin Leven. I was addressing Benjamin. Here," He motioned with his hands and from all around the room there were clicks and pops. Red robots popped up from the tables, seemingly from nowhere. Ben recognized them as the robots that normally served Vulkanus. "Go busy yourself. This fight does not concern you." Instantly the robots attacked Kevin, shooting him with lasers. They pushed him back, away from Ben.

Ben was going to move to help his friend, but a flash of red caught his eye and when it ended, Albedo stood there in his Humungousaur form, red eyes blazing. "I've been waiting for this, Benjamin. Before I return to my home I will dispose of you. If I am to be stuck in this horrible body then I will be the only one to have it. You have tested my patience for far too long. I will enjoy making you suffer."

The teen heard the malice in his twin's voice and actually hesitated. Albedo took his pause as a chance to land a firm punch to his chest. Ben flew across the room and hit the wall rather hard. He quickly picked himself up and hit his chest again, turning into Ultimate Swampfire. It was only a precaution. Ben wasn't too worried…yet.

He attacked back with vigor, shooting flames and kicking and punching. Albedo was never too good in a fight, but he had something that Ben didn't. He had the ability to think while he was fighting, and come up with a strategy. Little did Ben know that Albedo was merely distracting him while he slowly went backwards. Albedo bumped into a table and he moved his hand back a felt around until he grabbed what he was looking for. In a flash he had a gun in his hands and pointed it at Ben.

There was a huge explosion and both Ben and Albedo were engulfed in yellow light. When it cleared, they were both back in human forms, on the ground. Ben growled and got to his feet, his hand going for his watch. He hit it and waited to be turned back into an alien. But nothing happened. He glanced down and saw that the Ultimatrix was red. He tried twisting it, but it refused to respond. He glared at Albedo. "What did you do?" he yelled.

Albedo chuckled and got to his feet. His Omnitrix didn't seem to be working either. "What's the matter, Benjamin? Is your watch not working? Such a shame that you don't know how to fit without it. As long as we are in this room both of our watches are rendered useless. And you don't want to leave, Ben. If you leave, I get away and go back to my planet."

Ben cussed. He ran at Albedo, swinging his arms. Sure he wasn't used to fighting without going alien, but he wanted to prove that he was more than capable of holding his own in a fight.

Of course, Ben wasn't counting on Albedo being able to fight. His doppelgänger caught every one of his punches with ease and his kicks barley made him flinch. He shoved Ben back, making him stumbled and land on his butt. Albedo lifted his foot and drove it into Ben's stomach. Ben gave a small scream as he doubled over, clutching his stomach. Albedo grabbed Ben, forcing him to his feet. He twisted Ben's arm, driving Ben to his knees. It really was painful. Albedo grinned. "I've been watching you, Benjamin. I know all your fighting techniques. They are really quite pitiful. You know I could break your arm right now. Nothing you could do would stop me." The alien seemed to consider it. "Yes, I should do just that. I've had enough of your meddling." He applied pressure.

"Hey, Albedo! This portal isn't important, is it?" Kevin shouted.

Albedo turned to see Kevin smirk and throw one of the robot heads at the control panel. It hit dead on and sparks were set off. The portal started flicking and changing colors. "No!" Albedo screamed, releasing Ben and running towards it. Ben quickly regained himself and followed.

"Kevin, stop him from reaching the portal!"

Kevin ripped up a piece of the floor and hurled it at Albedo, but his aim was thrown off by the robots that attacked him. The cement smashed harmlessly against the wall, not stopping Albedo in the slightest.

Albedo was getting closer to the portal. Ben ran as fast as he could and managed to reach Albedo as he was climbing up the dais that the portal was on. He jumped on Albedo's back and knocked his twin to the ground. "You imbecile!" The white haired boy screeched, grabbing Ben's shoulders and switching their positions so that Albedo was on top of Ben, repeatedly slamming his head against the floor. Ben saw stars. "Why must you constantly ruin all my plans?" Albedo lifted his fist and slammed it against Ben's face again and again. And there was blood, and bruises. Albedo paused, his fist stained red with blood. He was staring down at Ben curiously. He red eyes roved over Ben's face. He hesitantly reached out and touched Ben's slowly swelling cheek softly.

Ben spit at him, splattering blood over Albedo's cheek. Albedo snapped back to reality. He got off of Ben and stood, glaring down at him. "I will not be stopped by you again, Benjamin. When I possess my own Ultimatrix you will be the first to die." He continued his way to the portal, smiling.

Ben struggled to get to his feet and stumbled after Albedo. The portal was barely there, fading slowly out of existence. Albedo paused right before it, his brow crinkled, squinting into the portal. "Wait…" he muttered. "This isn't my planet…" Unfortunately for both Ben and Albedo, Ben at that moment tripped and tumbled forward onto Albedo, who in turn fell through the portal, taking Ben with him.

After they disappeared, the portal gave a high, ear splitting screech that had Kevin covering his ears and the robots exploding, and then was gone. The archway collapsed in on its self. Kevin stared at the place were Ben had been and cussed. He put a hand in his hair and closed his eyes. "Gwen is totally going to kill me."

Ben and Albedo landed in a tangled heap on something hard. They got off each other and looked around. They were in a deserted, dry, barren landscape in the middle of nowhere. "Where are we?" Ben asked, glaring at Albedo.

The alien glared right back, dusting dirt from his clothes. "You are the one who has gotten us in this mess, Benjamin. The portal was set to go to my planet. That idiot Kevin must have damaged the controls in such an extent that the portal switched locations and brought us to…wherever we currently are." He pointed an accusing finger at Ben. "However, this is also entirely your fault, for if you had just let me go home like I desired, we wouldn't be here!"

"I would let you go home if I knew you weren't going to just make another Ultimatrix and torment the universe with it!" Ben retorted, his face slightly red.

"You know that Ultimatrix rightly belongs to me! Vilgax and I had a deal! He was to finally kill you and I was to receive the Ultimatrix. It belongs to me, not some stupid mortal like you!"

Ben placed his hand on his wrist, happy to feel that his Ultimatrix was working again. "Guess what, Albedo? We're not in that room anymore."

Albedo recognized Ben's warning and an evil grin flashed across his face, his hand too resting on his watch. "I suppose we are not."

There was a flash of red and green, then the fight began.

…..

A Hispanic teen was lying in his bed, his head hanging of the edge as he slept, drooling slightly. He was woken abruptly from his sleep by Bobo, who had poured a bucket of cold water on top of him. Rex hopped up off his bed, his hand already transformed into his BFS, searching for an attacker only to see his monkey friend rolling on the floor, laughing. "Oh yeah, that was so funny, Bobo." Rex smirked, turning his hand back to normal and brushing his wet hair from his face. "So, do you have a reason for waking me, or did you just do it for kicks? It's like," Rex glanced at the digital clock blearily. "Bobo, what the hell! It's 1:30 in the morning! I should be sleeping for at least another four hours before Six wakes me up."

"Sorry, Chief. But White wants to see you in the meeting room. I'm just following orders."

Rex laughed and grabbed his shirt, pulling it on and over his head. "Since when did you follow orders?"

"Since White threatened to release the whole Petting Zoo on me if I didn't." The monkey crossed his arms. "You coming or not?"

"I'm coming, I'm coming," Rex muttered sleepily, slipping on his jacket and following Bobo out of the room. The walked down white hall after white hall down a path they had memorized. Rex hated these late night meetings. Six would still wake him up early, no matter how late he went to sleep because of these things. They always lasted forever because White could never shut his mouth. He just went on and on about stuff that Rex didn't even listen to.

After five minutes of walking Rex placed his hand on the meeting room door and it slid open, revealing Agent Six, Doctor Holiday, and White Knight face on the huge screen in the room. As always, White Knight didn't look happy. Holiday looked as tired as Rex, but of course Six looked well rested and alert.

"What's up?" Rex asked, heading over to the two and stopping in front of the screen.

White Knight was blunt as always. "There's been an incredible energy disturbance out in the desert. We managed to get a bit of footage. Two EVOs have apparently appeared out of nowhere. We suspected Breach, but she is nowhere near. Holiday has yet to explain it." Holiday gave an angry huff. "The footage is…odd to say the least."

The footage came on. It was feed from one of Providence's airships. In the scene there were two EVOs. One looked sort of like a monkey-spider thing, and the other looked sort of like a beetle. They were fighting pretty viciously, with one EVO shooting webs and the other shooting ice. It was nothing new. But then something happened that shocked Rex. The EVOs talked.

"It's my Ultimatrix, Albedo! I won it fair and square!" Shouted the monkey-spider one, hitting the other with one of its many legs.

"You do not deserve to wield its power, Ben Tennyson! The extent of its power is beyond what your mortal mind can comprehend!" Yelled the ice beetle, attempting to freeze the monkey-spider.

"Did those EVOs just talk?" Rex whispered, shocked. "And call each other by names?"

White Knight's face appeared next to the footage. "We believe they might be part of the Pack. But that's not the most unsettling part. This is," The footage was fast forwarded a bit. The monkey-spider suddenly hit its chest where there was a strange symbol and transformed. Now it was apelike and bigger, all the more frightening. "This EVO seems to have the ability to upgrade himself somehow. You need to go and investigate. See if you can heal them. If you can't, then bring them back here."

Rex nodded that he understood. He felt a little bit of hope fill him. Every time they found an EVO that was a little bit different he felt this way. Because he was different. Any other EVOs with weird powers could have answers to explain what happened to him.

He followed Six to the aircraft and climbed aboard along with Bobo and a few Providence agents. The all sat awkwardly the whole ride there, which thankfully wasn't too long. The EVOs had appeared not too far from Providence headquarters, which is what made White Knight suspicious.

The second Rex heard the sounds of fighting; he slammed his hand against the button that opened the back of the craft. With an annoyed look from Six, he released his Boogie Pack, pulled on his goggles, and jumped. This was always his favorite part. The wind rushed up and hit his face, running through his hair. He flew in close to the fight, hovering near the EVOs heads. They were too caught up in their fight to notice him. That is, until Rex landed on the ground, formed his Slam Cannon, and shot a faceful of rock at the ice beetle.

This got their attention. They turned and looked at Rex, chests still heaving from the fight. Much to Rex's surprise, they didn't immediately charge him and attack. They just stood there, staring at him. Then the ice beetle hit his chest and changed into a totally different EVO. This one looked like a dinosaur. It was huge. "How dare you hit me in the face? You will pay dearly for that!"

"Albedo!" The ape-spider growled. "Let's not kill every single person we meet. If you have forgotten, we have no idea where we are. This alien might be able to help us get back." It hit its chest once, then twice, and Rex's eyes went wide. Standing where the EVO had once stood was a teenager, no older than him, with brown hair and green eyes. He had on jeans and a jacket that had the number ten on it. It was like he had never been an EVO at all.

In his shock, Rex didn't have time to avoid the punch from the EVO named Albedo. He flew back and landed hard on his back, groaning in pain. He quickly shook it off. It was all in a day's work. Getting to his feet, he transformed his hand into his BFS and slashed at the EVO, who grabbed Rex's sword and snapped it right in two. "I will not allow any more humans to insult me on such levels!"

Rex stumbled back and took some time to think, something he didn't normally do. The blade hadn't even nicked the EVOs skin. Maybe if he used his Whip Arm? It was worth a shot. He retracted the sword and instead grew the backpack like electricity pack on his back and the whip from his arm. He struck at the EVO and wrapped the whip around its body, increasing the flow of electricity.

The EVO shuddered, shook, and then fell, out cold. There was a blinding flash of red and instead of an EVO lying on the ground, it was another teenager, this one with white hair and red eyes. The weirdest thing was that the two teens looked exactly the same except for the hair and the eyes. Rex glanced at the first teen and opened his mouth to ask him something, but suddenly the green eyed boy gasped and grabbed his neck. It took exactly seven seconds for his eyes to roll into the back of his head and to collapse on the ground. Rex could only stare.

"Rex." His ear piece buzzed. "Report."

Rex placed a finger to his ear piece so he could answer. "Ummm, Six, they turned into teenagers. I didn't cure them. And…" Rex went to the side of the white haired one. He placed his hand on the teens chest and waited for the familiar rush of nanites. But there was none. "Six, these guys aren't EVOs. In fact," he paused and searched for a bit. "They have no nanites in them…at all." Rex stared at the two, his brow furrowed. The words rushed from his mouth before he could stop them. "Who the hell are they?"

So do you like? I'm pretty happy with it. It's my first Generator Rex and Ben 10 fic, so I'm not sure how it is. Let me know in a review. It is going to be a multichapter. The more reviews it gets, the faster I will update. Thanks for reading:)