A Metroid/original story crossover. The story that is crossed over is one written by me, and though I do not own the character Samus Aran, Metroid, the X, or any of those things, the world this takes place in, and all other characters, belong to me. This story is researched, as far as scientific things go, and takes place one week after the incident with the X Parasites and SA-X.

My first Metroid fiction, though not my first use of Samus Aran herself. It begins in first-person, than goes to third.

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Metroid Fusion:

FISSION

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Chapter 1

The Mission Gone Wrong

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It has been a long, long time since I first went back to Zebes…to destroy Mother Brain. It has been so long since I hated the Metroids, but now they are not only my friends and allies, they are my cousins as well, genetically speaking. I hate to think of them as energy-sucking bastards now, since I know more about them than any human ever could. Because now I am no longer human.

The computer…Adam…is still around, still hassling me about things I do wrong, and the things I do right are no cause for praise. Just like he was before his mind was transplanted into this ship. I never thought I'd say it, but I'm glad someone remotely human, if long dead, is out here in space with me.

Much better than the one sitting in the co-pilot's seat next to me…wearing a hideously blackened mockery of my power-suit. So vile, twisted…it should never have come into existence…and yet, I love it like a son or daughter. Nothing would ever change that, and it is all thanks to that incident two years ago…with the X parasites. Those things made me into what I am, a half-human/half-Metroid freak of nature. No…not of nature; of science.

I sit here in this chair, breathing in the thin air of the ship that has been my home for a month now, and think back to when my 'partner' and I first met. Or rather, when it held a gun to my face and hissed in some vile language that I didn't understand at the time. Terrible way to make a first impression, but it wasn't old enough to understand that at the time.

I think back to when I first met this wicked horror, this unholy fusion of two evils. This is what my life is now, and though it does little good to dwell on the past, it helps me think more about the future. If I live long enough to see it, that is.

It all began many months ago, on an asteroid far out in space…a little salvaging on my part. I never realized that in a few short days time my world would be torn into bits, melted, blasted with cryogen, and then put back together inside-out. Yeah…that's about how bad it was, but I couldn't see it coming until it hit me full in the chest like some mutant, demon grizzly bear…

-Samus Aran

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Many months earlier…

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Samus Aran sweated inside the power-suit, tired after climbing over jagged rock and leaping over chasms for three days straight. She didn't have to sleep as often, but she slept longer, thanks to the Metroid DNA in her system. She sighed, looking out over yet more bleak, unforgiving asteroid landscape, a beep in her helmet bringing her to attention.

"What is it, Adam?"

"Come on, Lady, what are you doing out there?" The computer said. "Why haven't you found that old ship yet?"

"It isn't here! Whatever energy source you detected is either gone or it never existed." Samus crossed her arms, the cannon on her right collapsing into the smaller blaster instead of the spazer. "You must have messed up your scans…"

"I know it's there…you must be right on top of it! You are within twenty feet now, can't you look around?"

"Wait…say that again?"

"I know it's there…you must be right on top of it! You are-"

"Stop!" Samus shouted. "You said…right on top of it! Could it be underground?"

"…there is a distinct possibility." The other admitted.

"Well, I'm going to blow this little area up, and see what's twenty feet below me. Two megaton or three?"

"Are you…are you going to use a power bomb?!"

"Why not?"

"You really are insane, Samus!" The computer cried. "Don't you dare! You could make this asteroid incredibly unstable." Samus scratched her stomach, though the suit prevented her from getting to the itch.

"Yawn." Samus didn't actually yawn, she just said the word. "Any other options…besides digging?"

"…tunneling?"

"Are you that determined to get me to do this?" Samus asked, impatient after so long without a break. "What's so important about this ship anyway?"

"It is old beyond belief…older than human technology, and even the Chozo technology on Zebes! This could be beyond the birth of life on Old Earth…"

"And what does this do to help us?"

"…there might be a reward."

"I'm listening now." Samus tried to scratch the itch on her stomach again, but it only got worse and now she gave up, crouching and looking at the ground. "So, what will it take to get down to it?"

"Not much, really. With your power-suit, it will take maybe an hour's digging time to reach it."

"That's not so bad…" Samus paused, standing and looking down at her stomach, though her suit was in the way. "Adam…something might be wrong."

"What is it, lady?"

"I think something bit me…I have this bad itch on my stomach and it...it's burning now."

"Do you require medical treatment?"

"Let's play it safe…"

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Adam began to bring the thrusters online, powering up the ship's systems. He had never told Samus that he had been able to do this, and when she found out herself she never mentioned it. The computer began to lift the ship off of the asteroid plateau that it was on, tracking Samus's position nearly on the opposite side of the asteroid.

Then he heard it…a scream, coming in through the communication link to her power-suit.

"Samus!"

"Oh God, damnit, it hurts!"

"What is it, Samus?!" Adam put more speed into his ascent, becoming very worried…in a simulated sort of way. "Speak up, lady!"

"My stomach! It hurts! Holy mother fu-" The comm. went dead.

"Samus?" Adam asked quietly. "Samus, what happened?! Samus! SAMUS!" He began throwing out a distress signal in all directions as he flew towards the human's position as fast as he possibly could without blasting the ship apart in the asteroid's thin atmosphere. "Don't worry, girl, I'm calling for help…"

And to his great surprise, and joy…someone answered.

Adam landed and opened the bottom hatch, hoping Samus would find a way inside…

…if she was still alive…