Disclaimer: I do not own Sonic and his related characters or Megaman X and his related characters. They belong to their respectful owners, SEGA/Sonic team owns Sonic, Capcom owns Megaman X.

Authors note: The idea of this story is the reason I joined this site. I hope you like this story.

Megasonic X

Chapter 1: A fight that never ends

Sonic the Hedgehog was in the middle of a fight with his greatest enemy. It was not Eggman, but Metal Sonic. A robotic replica of Sonic himself who's only purpose was to destroy Sonic. During this battle both of them reached their super forms with the power of the Chaos Emeralds. Sonic's friends could do nothing but watch this battle.

"How long can those two last up there?" Knuckles asked.

"I don't know, but they've been fighting for hours." Amy said.

"How did this battle start?" Tails asked.

"That idiotic robot still can't accept the fact that Sonic is stronger than him." Shadow said running to the others.

"Wait a sec, how is he still alive? Didn't Sonic, Tails and I shut him down when we all destroyed Eggman's air fleet?" Knuckles asked.

"He must have fixed himself because Omega and I left him there thinking he would rot." Shadow said.

Flashback

"Shadow what should we do with him?" Omega asked.

"Leave him there, he's just another one of Eggman's creation that only wants to destroy." Shadow replied.

"Affirmative, Metal Sonic will just stay here then." Omega said.

"Let's get out of here before the ship blows up." Shadow said.

"Affirmative." Omega said as they left.

End Flash back

"I should have destroyed him back then." Shadow said to himself.

"Can't you help him at least?" Amy shouted out.

"No can do, both of them absorbed the emeralds power, its too late for me to turn super." Shadow said.

"Well Sonic better think of something fast or we're all in trouble." Knuckles said.

"Why is that?" Tails asked.

"Those two have been fighting for hours, thus releasing large amounts of chaos energy." Knuckles began. "If they keep this up they could…"

"Create a dimensional rift with all that excess energy." Shadow completed.

"Exactly." Knuckles said.

"Sonic please stop Metal." Amy pleaded.

Sonic and Metal Sonic were in the most forceful battle of their lives. Both hedgehogs suffered form several injuries. Sonic was doing the best he can to stop his metal counterpart. Due to the fact the Metal Sonic was a machine he had no need for rest, Sonic on the other hand was slowly growing tired from the intense battle.

"Face it Sonic, your power is limited by the fact you are an organic life form," Metal began "My power on the other hand is unlimited."

"That's what you always say." Sonic said. "But in the end, I've always defeated you."

Sonic was now charging his energy preparing to dash full force at Metal Sonic. Metal caught on to this and decided to do the same. Both of them were charging their energy preparing for the final blow, unaware of what their massive power is doing to the planet.

"I'll show you who has limited power." Sonic said as he started charging to Metal Sonic.

"We'll see about that." Metal said doing the same as Sonic.

And as soon as the two collided a massive ball of energy began to form around them. Just as Knuckles predicted the ball was made of pure Chaos energy from the battle, thus creating a portal that rips through time and space, more commonly known as Chaos Control.

"It's too late." Shadow said as the energy ball began to spread around the planet.

"Everyone stay together." Knuckles said.

"Right." The others said as the held on to each other.

"Here it comes!" Tails said.

After Tails said that the energy ball had reached the group of heroes sending them to another world. None of them knew where they were headed nor did they know what to expect. All they could do is wait and hope for the best.

Sonic was still fighting Metal once they reached the new dimension but neither of them knew about it. Sonic was running out of ideas so he had to use his last resort. He had to send the Chaos Emeralds around the planet using chaos control. Metal was badly damaged and would not be able to function if he lost his energy if Sonic did this, but at the same time Sonic could die from the collision back to the surface.

"Looks like I don't have a choice," Sonic began. "Here I go, CHOAS CONTROL."

As he said that the emeralds appeared around the two and were scattered. Metal ran out of power and was forced to shut down, thus beginning to fall. Sonic also began to fall because he could no longer sustain his super form. He began to fall towards the planet at an intense speed. He crashed on a metal platform and created a large crater around the area he landed. He could barely stay awake.

"Hey, there's another one but he seems badly injured." A voice said. Sonic was nearly dead so he could not tell who said that. All he could see was a blurry blue image.

"Take him to the medical room now." Another voice said. All sonic saw was a red blur and then blacked out.

The red and blue figures carried Sonic to a near by building and brought him to a medical center. The blue figure was worried about Sonic because he was in really bad shape and could die.

"Lifesaver, can you save him." The blue figure asked.

"I can try X, but this will take some time, this guy is an organic organism, not a reploid." Lifesaver said to the blue figure that went by the name of X.

"Don't worry about it X, Lifesaver can take care of it, let's go check on the others." Said X's ally, Zero.

"I guess you right Zero." X said as they left.

"All right then, lets see what I can do for you Mister Hedgehog." Lifesaver said.

And Lifesaver began to heal Sonic's wounds, this would take him some time but he was sure he could do it. Sonic just had to hold on for a little while and he would be fine.

Here's the first chapter, I hope you liked it. If it seems that everything went too fast I'm sorry. That's just my writing style for the first chapter. It will get better as the story goes along.