A/N: I've been wanting to do a Metroid fic for a while, but can never seem think up an idea that i think would be worthy of the name Metroid, so while I write that, here is this, a little Metroid/Halo crossover I thought up while laying in bed one night, so don't expect it to be a great work of art. I write casually, but I do put effort into making it good. And I know that I will be asked, so I will say this ahead of time, there will be no romance. And just to let you reader know, whenever there is a space between paragraphs, it means a switch to a different perspective, mainly between the perspectives of Samus, Cortana and John.

A quick Prologue

During the escape from the Ark, the subsequent firing of the unfinished Halo ring caused and energy surge, and that, combined with an automatic emergency signal, set off the other Halos as well, but not to the same extent as the first firing, as far as the humans and covenant know, only about twelve human ships and fifteen elite ships were caught in the blast, and possibly some covenant loyalist ships as well.

The ships caught in the blasts disappeared without a trace and all hands were assumed lost.

Chapter 1: Encounter

Time elapsed since events at the Ark: 3 year(s), 11 month(s), 18 day(s). (Estimated time)

Cortana sighed, John and the Arbiter were in cryogenic stasis, and as an AI who could process billions of calculations per millisecond, almost four years of floating in space, running on superminimal power, and waiting for someone to find her and the chief, was extremely boring, at least she had something to do for the first two years, try and stop herself from dying.

She had come close for the first year, but all of the solutions had failed, she was very close to dying, and just when she had thought there was no cure, she had found one, by copying herself and then delving into the root code, she had repaired the self-interfered code and rewrote any destroyed or fractured lines, and the lifespan of the clone had been reset, so with her test subject now revitalized, she had copied all of the Halo data to the clone, and then had it repair her the same way.

It had been a glorious feeling, having her life reset, she was now back to full life capacity, and still retained all the data, she was even able to expand her memory limit and calculation programs, she was now operating at one hundred twenty percent of previous limits with no current adverse effects. She had discovered immortality from time for AIs.

But that was eleven months ago, and now it was back to waiting, her clone was tasked with keeping the beacon alive and identifying incoming objects, while she searched with whatever internal sensors the ship had left, for a way to restore more power. The subsequent radiation and magnetic energy from the firing and blast had knocked out almost all the power systems and damaged the engines and weapons beyond a y sort of repairs an AI, a Spartan and and Elite could preform.

She located a damaged reactor conduit, if this was repaired, it could supply enough power to the ship for her to activate several external cameras to find their bearings, and possibly use thrusters to change their course.

After a thorough search, she located one partially damaged repair dolly, the optical sensors were damaged, but she was able to work past that. She directed to to the engine room, and from there to the damaged conduit, where she used 3D blueprints and the fractured images from the optic sensors of the robot, to repair the conduit.

There was a humming and several more lights flashed on, her sensors read a ten percent power increase, dropping at a rate of point zero zero one percent a second, she quickly activated several external cameras, most were disabled or damaged, but she could see that they were back inside the milky way, star mapping confirmed it, Cortana used the ships remaining thrusters to orient it in the direction that star maps indicated earth was and made one burst with the main engines, power dropped to one percent, she almost cried out when it dipped precariously close to the line where the two remaining cryo pods would be shut down, the power climbed to five percent and remained there, the slow power leak was stopped.

Now they were on their way home, and with any luck, it would only take five hundred years at most, she gave another sigh of boredom, this was going to be a long trip.

Samus Aran set her ship to cruise, Space Pirate activity had been low these past few days, and there was little to no work at the moment, although she had done some jobs for the Galactic Federation recently that money would keep her going for a while. Just as she was about to retire to the shower station, the communications panel beeped urgently. She sighed and pressed the holographic control, a scientists face appeared.

"Greetings Samus, sorry for contacting you with such urgency, but we have a mission for you, our long range sensors in sector five have detected a strange asteroid drifting towards one of our colonies, F-L24 at the asteroids present trajectory it will impact in thirty hours and possibly hit a city, we would like you to find out what it is and if possible, redirect it to empty space.". Samus sat down. "Why can't you send one of you own ships?". The scientist shrugged. "You are the closest ship, and none of ours are available at the moment, we will compensate you for your time.". She nodded. "Fine, I'll take the job." she said it in a neutral voice, but inside she was burning. 'they are taking my services for granted, sending me on scouting duty. Geez.' The technician copied several lines of coordinates and she input them into her ships' navigation system, it banked and automatically headed for the asteroids position.

It's location was just out of communications range of any GF ships or stations, and would be for another three days, it wasn't moving very fast, she could outrun the hunk of rock. But she knew how fast it looked and how fast it was were two different stories, she activated manual controls, and circled the asteroid, her sensor beams playing across the extremely irregular surface. A few passes later and she had a full holographic representation. It was not any normal asteroid, it was composed completely of Titanium-A, and upon closer inspection, looked rather like a blocky ship, shaped like the letter Y from the top, it had two large engines and the bow split to got up and down. Compared to GF ships it was a light class of frigate in size, it bore the letters 'UNSC' and several words in the next sentence were blotted out by scars, but she made out one, 'Dawn'.

Samus decided to take a closer look. She brought her ship closer and landed on top, just above an exposed hallway. There was a tiny trickle of power running through the ship, and was mainly concentrated to one room, her suit detected two biosigns onboard, in the same room.

Samus stepped onto the hull plating and leaned over the edge, looking down into the exposed hallways. She gripped the edge and swung inside, floating freely, there was no gravity, which should have been expected. She activated her gravity suit ability and dropped to the deck, her boots clomped and clanked as she proceeds deeper, scanning everything. Most of the tech was damaged or destroyed, she found several weapons, primitive projectile weapons, not the standard GF marine CED seven-seven-three assault rifle. These weapons were hundreds of years outdated, she even found some grenades and rocket launchers, when she scanned the launchers, her suit gave her a complete profile of the rounds they launched, practically on par with her own normal missiles, aside from her missiles having homing capabilities.

Soon Samus was stopped by a thick blast door, at least two feet thick, a quick scan revealed that this metal was almost pristine, she fired a shot. The packet of amber energy splashed against the door, melting a small amount of the metal. She charged a shot and fired at the same point. The more powerful beam connected and slagged more metal, creating a three inch deep crater in the titanium.

Samus fired a missile into the crater, there was a silent flash and a shudder, the fire and smoke lasted only a second, before clearing and revealing the door still standing, with a large black crater in it. She sighed in frustration and switched to plasma beam, and fired continuously, melting the edges until the door was completely detached, she kicked it, sending it floating into the far wall.

Cortana had sensed the unknown being moving through the Dawn with whatever sensors were left, and have begun to thaw Arbiter and John, the unknown had just stopped to inspect a Jackhammer Launcher and move on, she dropped a blast door in their way, and waited to see what would happen, the unknown fired at the door with some sort of superheated energy weapon from an arm cannon, that beam was not covenant, it was something more advanced, they even used a plasma beam that was more advanced, within the spam of twenty seconds the door was severed from the hinges and propped up against the the far wall, she initiated the final step for the defrosting procedure.

John-117, was floating in the space between dreaming and waking, there was nothing but a calming sea of blackness, when suddenly light stabbed into his eyes, he heard Cortana calling to him as though through a tunnel, his vision was tunneled and cloudy, but that soon cleared.

He blinked and slowly rose, clenching his muscles to get rid of the pins and needles. "How are you feeling Chief?". Cortana asked, he turned towards the holo tank, it was inactive.

"Fine, whats the situation, how long has it been?". There was a pause. "It's been almost nineteen years, and there is someone abroad the ship.". Chief reached over and grabbed his battle rifle, checking the condition, in zero atmosphere, it had remained in the same condition as before, he had one full clip and the twelve shots remaining in this one, but Cortana directed him to a small damaged dolly that was loaded with several weapons. He selected an MA5B and six clips, as well as a shotgun and two plasma grenades, the rest, a jackhammer with two shots, and a pair of submachine guns, he packed into a duffle with their ammunition for later. He barely registered the Arbiter doing the same with a few covenant weapons and an energy sword.

"Chief, Arbiter, whoever is here, is only three minutes away, and heading straight for this room.". He nodded and remember Cortana's chip from the holotank, and slotted it into his helmet, there was the usual stab of icy mercury which melted away. "How did you survive?". He asked as he moved to the room across from cryo, and took cover by the door. Arbiter stood behind him, covering his back, Cortana replied. "I found a way to reset my lifespan without erasing my memories or all my data, it's very complicated.". There was a thump in the room linking theirs to the cryogenic chamber that brought and end to her sentence.

Samus cursed silently as the crate slammed into her head, it had been floating around and she hadn't seen it, she batted it away with her arm cannon and moved forward, toward the room where her ships bioscanners had picked up the life sign.

She stepped out into a room with three doors, one leading left to an unexplored room, another leading to the chamber with the power signature and life sign, and one leading back the way she came, she moved right. If there was someone alive on this piece of crap then maybe she could find out what happened.

The room contained one pedastle, a pair of pods, and a damaged dolly, her scanners told her that the pods were for cryo, and had been thawed very recently, and that the pedastle was for holographs and had been using power until a minute ago.

She raised her cannon and seeped the room, no visible threats, she cycled through her visors, nothing so far, Samus was about to turn when a voice, male, sounded from about six feet behind her. "Don't move or I'll shoot, who are you?".

John glanced around the corner as the figure stepped into the joining room, the Arbiter was behind him in cloak, both warriors were surprised that the figure was walking normally in zero gee, and clad in brightly colored armor, mainly oranges and reds with a green visor, lights scattered around and a green arm cannon of some sort, but what caught his attention was the shoulders, the pads were large balls with a pair of small fins on each. The armored figure paused for a moment and headed for the Cryo room, seemed to be searching, John stepped out of his cover and raised his rifle, their back was turned to him. "Don't move or I'll shoot,". He said, pausing about two meters back. The arbiter raised his own plasma rifle and stood in the center of the doorway. "Who are you?". John demanded.

Samus froze, she assessed her situation, there were no known weapons that a man could wield that posed a direct threat to her that she knew of, and if this particular person was wielding any of the weapons that were on this ship, then they would pose almost no threat to her. She slowly started to turn around.

Samus spotted the armored man immediately, he was as tall as she was, but scans told her his armor was more primitive but still durable. What she saw next sent a chill down her spine, the silhouette of a space pirate behind him, cloaked. She lunged forward with incredible speed. "Watch out!" She cried, pushing him out of the way and tackling the cloaked alien, she pinned it to the ground and shoved the barrel of her cannon under it's chin.

John was stunned for a moment when the figure lunged forward, telling him to watch out in a distinctly feminine voice, and the speed at which she moved and the strength of the shove was that of a Spartan. He hear the arbiter grunt as she slammed into him, John scrambled to his feet and saw the armored woman pinning Arbiter to the deck and pointing her green arm gun thing at his neck.

"Stop!". He boomed, taking aim with his rifle at the back of her helmet. "Stop?" she replied, obviously confused. "Why are you protecting a space pirate?". He cocked his head and inched forward. "What is a space pirate?". "They are the main enemies of the Galactic Federation and all peaceful beings, why are you protecting one?". She said, glancing at him, Arbiter tried to reach his plasma rifle which was lying three inches from his hand, but the woman batter it away. John tried to reason with her. "He isn't a space pirate, he is an Elite, and an ally.". She seemed to stare at Arbiter for a moment then stood, allowing him to gather his weapons and rise, she stepped back. "My apologies.". She said, and the arbiter nodded. John cleared his throat and went straight to the point.

"What do you want?" He asked, not yet trusting the woman. "I'm here to inspect what we thought was an asteroid, I detected your life signs onboard and decided to investigate.". She said, John slowly lowered his rifle and moved out of his combat stance, but didn't let his guard down. "Who is we?".

"The Galactic Federation, they detected your ship and sent me to investigate.". John closed his external speakers. "Cortana?". "Well, her voice patterns indicate she is telling the truth.". He trusted his AI, so he decided to trust this woman, at least for the time being.

Samus stood steadfast in the face of two warriors, one taller than she, the 'Elite' bore a suspicious resemblance to a Space Pirate, but she had never seen armor like his, or the weapons he carried, and he was as strong as she was. She assessed the other, the man, the scans had told her that the armor he wore made him as strong as her, and that his bones were coated in super strong metal to make them almost invulnerable. Their weapons were of no real threat to her at the moment.

"My name is Samus.". She said. "If we are going to speak further, we might as well know each others names." The and and elite exchanged glances and before speaking. "I am Master Chief 117.". Replied the man. "And I am known as the Arbiter, but my name is Thel Vadam.". Samus nodded, and she eyed the Master Chief, knowing he wasn't telling her his real name, but she was not about to invade someones privacy except if absolutely necessary.

Suddenly Samus's warning systems beeped, she checked the log, the dead ship was entering and asteroid field, it would be smashed to bits.

"We need to leave now.". She said, and the others straightened. "Why?". Said the man, obviously he didn't trust her yet, she didn't blame him. "This ship is entering an asteroid field, and it will be smashed to bits with us on it, I have a ship we can escape to, there is ten minutes before we enter the field, grab whatever you need.". The others nodded and disappeared into various rooms.

Seven minutes later they were walking, or in Thel and the Chief's case, floating, to her ship.

John stopped momentarily when Samus's ship came into view, it was orange and yellow and red like her suit with a green cockpit window, there was a tube leading into the ship like a small elevator.

They loaded half of the four duffles into the lift with Samus, and she went up, seconds later the lift returned and the Arbiter got on with the rest, leaving John, who was taken up seconds later.

The interior was very grey with some color, most of the panels were located in the cockpit area, the rest of the ship that was open was about the size of a scorpion tank.

Samus piled their gear on the far side of the ship inside a small storage area, she sat in the pilots chair and touched a few controls, the engines rumbled and the ship lifted off.