What's up, everyone! This is GKC bringing you a crossover between Aliens and RWBY. To be frank, this is largely inspired by weismax33's RWBY: Extermination. Some of you have been wondering about the character as well, simple, I was the one who provided it for the story so in all honesty 'Chris Alder' belongs to me. You could even call this somewhat of an expansion or at least a remake of it. I'd also like to point out that while that there are elements from his story, it is different and I have permission from him to do a different version of it.

The story is about a Colonial Marine that had survived the events of Aliens: Colonial Marine, except he was the one who piloted the Cheyenne out of the Weyland-Yutani ship instead of Cruz and the resulting collision in which it happened sent the Marine and the Alien Queen to the world of Remnant.

As far as weaponry goes, the Marine will be wielding all of the weapons featured in the video game along with tools and equipment. Aliens will generally be the same with some having a few traits from the Grimm. One Xenomorph may possibly even be the Marine's comrade along with some Predator elements.

Now for the disclaimer: I do not own, except my OC, Aliens/Predators and RWBY. Aliens belongs to Twentieth Century Fox and RWBY belongs to Monty Oum (God rest his beautiful soul).

Now let's get this party started… BEGIN!

Aliens: Black Remnant

Prologue: How It All Began…

You'd have to ask yourself… Are we alone in the universe?

Many scientists have long sought this answer to find intelligent life out in the stars of space. Probes, signals, and even satellite imaging tried to find such life out in the 21st century. It wouldn't even take almost two centuries until we actually had to face such a question.

But you have to ask yourself this question… What if they were hostile?

To answer that question, we'd have to dive into the life of Chris Alder, a Sergeant First Class of the United States Colonial Marines.

You see, Chris was born in 2161 on Earth in Miami, California. His parents worked for the Weyland-Yutani Corporation. Now, normally, the higher-ups in this company would discipline their employees if they had children without their knowledge. Chris's parents were given a slide since they were about to work at a newly formed colony on LV-525. After his birth had passed, Chris's family moved to the colony.

The Vinita colony had been designated as a terraforming one, like Hadley's Hope colony on LV-426, but the planets had entirely different climates. While LV-426 was practically a huge hunk of rock, LV-525 was a jungle planet, which had indigenous life that didn't breath oxygen.

Weyland-Yutani however had a company of Colonial Marines come in and clear out a section of the planet so they could construct the colony and the Atmosphere Processing Plant to help generate oxygen for the employees.

Chris and his parents lived a fairly normal life along with the other colonists. Well, as normal as it could be on another planet. He didn't really meet many kids, practically all of them were teens or grownups and when his parents were busy, Chris would be left with family friends and co-workers. Other than that, it was pretty enjoyable.

That all changed in 2166…

Unknown to the colonists, Weyland-Yutani scientists sent to study the plant life of LV-525 had discovered a pyramid a few kilometers away from the colony and the APP.

Inside the pyramid, the scientists discovered a mysterious alien life form, along with hundreds of egg-like objects, in a room resembling a cage. After taking some of the eggs to their HQ located next to the pyramid, the scientists discovered parasitic aliens from inside of the eggs.

After bringing in test subjects from off world, the WY scientists discovered that the parasites attach to other lifeforms' faces, then after falling off, a new alien that bore a resemblance to the alien in the pyramid bursts out of the chest from a human 'host'.

Chris, at the tender young age of five, had met one of these aliens before when he was curious. One day, his parents were at work, leaving him with one of their laziest co-workers. The child played in the air ducts and would sometimes enter the forbidden areas that his mother and father explicitly said to stay away from. Chris entered the chamber in which the alien queen was being held and kept prisoner. At first, he thought it was scary then his innocent eyes thought it was quite pretty.

The queen had noticed his presence and tried to frighten him off by hissing or growling but the child didn't seem to care. All Chris said about the alien was call her 'pretty'. That's when the queen began to feel inside of his mind, sensing nothing more than childlike wonder and innocence. It was like looking down at a human newborn.

Eventually, one of the synthetic guards that patrolled the queen's chambers forced the boy to run back into the air vents and return to his babysitter's home. Chris would have no idea that the alien queen would begin the fundamentals for an escape plan.

It happened unexpectedly, an unknown EMP erupted, disabling all of the cages within the research center that held the aliens. The creatures overcame the scientists and their security detail. With all of the guards dead, the researchers were taken inside the pyramid to become new 'hosts' for more aliens.

The colonists had no idea these events had occurred and eventually, the aliens attacked the colony. Chris's parents, who had previously worked for the Colonial Marines, managed to rally surviving colonists into a defense of the colony for a good few weeks.

Having lost contact with Weyland-Yutani after the initial attack and with no way to ask for evacuation from the infestation, the colonists were starting to lose hope. Eventually, their defenses let up and the aliens broke in.

Chris's parents had managed to escape the slaughter of their co-workers and friends then made it to the escape ships located on the colony. They were similar to escape vessels found on starships, like the USCSS Nostromo, but were smaller and designed for only one or two people.

Strapped into the passenger seat, Chris's parents were forced to send him off the planet alone when the hostile aliens attacked. The boy watching in tears as his parents gave their lives to save him with the aliens brutally tearing them apart. As he fled the colony, the APP had detonated, destroying the colony and the pyramid, unaware to Chris that it was damaged by another.

The automated distress beacon on his escape vessel activated, leaving the young boy to float through space for approximately three days. However, he was later rescued by a detachment of Colonial Marines aboard the USS Centauri after they discovered his ship's distress signal.

Apparently, when the Marines rescued him, Chris had semi-malnutrition since his ship didn't have any food in the last few days. Thus, the soldiers fed and cleaned him up. None of the Marines could even figure out why a kid was floating in space but with some coercing from some of the female members of the Corp, Chris explained as best a five year old could about what happened on LV-525. Coincidentally, the Marines' mission was to investigate the colony located on the planet due to radio silence between it, Weyland-Yutani and the USS Marlow that had been called to investigate first.

With this information, the Colonial Marines started their return back to Earth. Due to the distance between them and the planet, the Marines went into hyper-sleep, as did Chris. It was one of his first experiences sleeping in cryo pods.

Once they arrived back on Earth, Chris had been taken to an orphanage since his parents were dead. Almost a day after, he was adopted. The person who adopted him was one of the Marines on the Centauri, a woman named Miranda Grey.

She was the first of the female Marines that took a liking to the well-mannered child and the one Chris bonded most with. She felt bad for the boy since he would be all alone then made the decision to adopt him as her own son.

On that day and onward, Chris's life drastically grew better. Miranda as his mother was kind, caring, and strong-willed just like his biological mom. She even brought the boy to meet some of her Marine buddies as well. Most days, she had to leave on missions with her comrades but Chris was alright with it.

His days of happiness ended on 2177 during his senior year in high school. Miranda had been reported KIA during a rescue mission on another colony world. Heartbroken, Chris made a promise to live up to her, his parents, and many like them then signed up to become a Colonial Marine when he turned 17.

While he did sign up to live the life his parents and foster mother gave him, he had another reason to join the Marines. That reason was his general love and interest for technology. During his time living in the Vinita colony, his love for technology had risen because of all the incredible tools and equipment involved with terraforming.

That love also extended to the Colonial Marine tech after his rescue. And now, he was able to work with the such tech. Motion trackers, smart guns, built-in infrared helmets, and a whole lot more.

After six weeks of boot camp, he officially became a Colonial Marine. Chris wanted to join Miranda's detachment but he had been assigned to the 118th Battalion aboard the USS Sephora. During his two-years of active duty, Chris had risen to the rank of Sergeant First Class due to his outstanding leadership skills, marksmanship, and technical engineering.

During that tour, he became close friends to three Marines. Corporal Christopher Winter, Private Peter O'Neal, and Private Bella Caliston. At one time, he knew about O'Neal and Bella's… intimacy during RnR days. He kept it quiet from Winter after his two friends made him promise to keep it secret.

Then came their next mission in 2179 after a USCM force had been dispatched aboard the USS Sulaco to the colony on LV-426 to eliminate a Xenomorph infestation or as some Marines liked to call them, 'bugs', had gone silent after 17 weeks of no contact.

The Sephora had been dispatched with a battalion sized force and a full complement of surface bounce nuclear warheads to secure the situation once and for all.

Chris had gone over the data on these 'Xenomorphs' and just his luck, he was given info on the same alien species that killed his parents and wiped out the colony on LV-525.

The distress call from the Sulaco had been sent by Corporal Dwayne Hicks, possibly the only surviving Marine of the 2nd Battalion along with a woman, a young girl, and a damaged synthetic. However, the Sulaco had last been reported sighted over the prison planet Fiorina "Fury" 161, and several Marines were sent aboard to investigate after the Sephora docked with the ship.

Captain Jeremy Cruz had assigned Chris and Winters to link up with Rhino 2-3 and 2-1, a Marine squad that O'Neal and Bella were a part of. Both Marines were going in with standard equipment, or in Chris's case, grab a shit ton of guns.

Before he had gone to hypersleep, Chris had been delving into genetic alteration tech. Granted, it had been in its early stages, however due to his technical expertise, he managed to perfect it as best he could. He didn't want to risk affecting his fellow Marines, so he used the serum on himself. The effects would only affect his eyes, granting him better eyesight, the ability to magnify what he was seeing, and, hopefully, allow him to see in different modes of sight such as night vision or ultra-violet. The results were successful however the blue eyes he had been born with bled over to a crimson red.

That day, he had been subjected to a whole lot of vampire puns but he ignored the taunts and kept his new eyes.

Chris also fashioned a wrist-mounted TACPAD on his left wrist. It provided information on his vitals, a map of the current area when downloaded, teammate vitals, and a handy hacking tool whenever he needed to bypass security doors.

He would also take a new prototype motion tracker that could magnetically attached to any Colonial Marine-issued weapon.

Unlike his friend Winter, Chris's M3 Patterned Personal Armor had been customized to his specifications with a standard armor pattern. The M10 Pattern Ballistic Helmet given to him had a pair of military goggles placed on it. On the left side of the chest on his vest was a survival knife while on the right was a few extra grenades. A pouch belt filled with spare clips of ammo magazines wrapped around his waist. Pouches on his left and right legs. Drawn on the center of his vest was a skull and crossbones decal colored in black. A tally mark decal was painted on his left shoulder pad while on the right shoulder pad was a decal that had an image of a dead xenomorph.

Once he got his armor checked, he grabbed his personal M41A Pulse Rifle MK2, the successor of the MK1. While other Marines' Pulse Rifles were pretty standard, Chris's was anything but. For one, it had a custom paint job consisting of red accents alongside skull and sickle decals. He nicknamed it 'Red Reaper'. Another difference being the attachments. While it still used the U1 Grenade Launcher as an underslung attachment, it also had the M5 Extended Magazine for an extra 20 rounds instead of the 40 clip size the standard used. The coup de grace was the S6 Reflex Sight, a zero magnification holographic reflex sight with a consistently placed red dot for a more efficient target acquisition. He had debated on using a Magazine Accelerator but that would cost him too much ammo for such a rate of fire, he'd burn through the clips long before he could finish a mission.

Besides all of that, Winter and Chris managed to link up with O'Neal, who was attending to wounded Marines of Rhino 2-1. After that, they were tasked with locating missing members of Rhino 2-3 but found only one surviving Marine that had been cocooned to the wall, Keyes. Other Marines were either missing or dead from something that exploded from within their chests.

Keyes managed to convince both Chris and Winter to recover the flight-recorder though not without a fight from the Xenomorphs. Among the Marines of Rhino 2-3, Bella was the only Marine that was missing.

Having successfully retrieved the flight-recorder, the Marines regrouped with O'Neal and the remnants of 2-1 only to have to fight in a last stand while Keyes worked to get the blast doors open after he accidently threw a grenade near a pile of bugs. The Marines managed to survive and ran to the umbilical connecting both ships until Keyes suddenly began to spasm, a 'Chestburster' erupted from his chest as he cooked a grenade, destroying the umbilical and nearly killing his fellow Marines.

Winter, O'Neal, and Chris were now ordered to the cargo bay of the Sulaco to open a way for Marines to land inside. Along the way, they found equipment with Weyland-Yutani markings that seemed to be researching the Xenomorphs. They even received communications of 2-3's surviving Marine, Private Bella. O'Neal even revealed to Winter about his and Bella's sexual fling much to Chris's amusement.

Fighting through the aliens on the ship, the three Marines managed to enter the cargo bay and vented any xenos that followed or tried to kill them. This gave Lieutenant Reid a chance land inside of the cargo bay in her Cheyenne.

However, their problems had only just began…

Immediately after landing, the Colonial Marines were under attack by human forces who had been revealed to be Weyland-Yutani PMCs. Not only that but the PMCs had activated the Sulaco's weapon systems to attack the Sephora. Ordered by Cruz, the Marines were tasked to advance up towards the bridge to disable the weapons before the Sephora was destroyed. Further ahead, they encountered eggs that spawned 'Facehuggers' a form of parasite that liked to latch onto people's faces. The Marines had managed to link up with Bella and the four continued their mission to disable the weapons.

The odds were stacked against the Marines but with the help of the Sephora's onboard android, Bishop, they managed to get to the bridge and disabled the weapons but were too late. The damage was too great and now both ships were on an orbital course for Archean's surface.

Winter, Chris, O'Neal, and Bella fled down to the cargo bay where Cruz and Reid were waiting to evacuate from the crippled Sulaco. The Marines having to fight both Wey-Yu PMCs and Xenomorphs in order to escape. Once Raider 6-5 was able to leave the cargo bay, they were forced to descend towards the planet however the dropship rammed into a piece of debris, sending it on a crash course near the ruins of Hadley's Hope.

Chris, Winter, Cruz, Bishop, Bella, O'Neal, and Reid were the only survivors of their crash. Now forced to take refuge in the colony and use it as a temporary OPS center, all the while encountering Xenomorphs that were stalking them in the vents. Afterwards, Cruz had ordered all surviving Colonial Marines to regroup at Operations then sent Bella and Reid to a relay tower while Winter, Chris, and O'Neil set up motion sensors to monitor the perimeter.

After surviving an ambush, Cruz ordered the three Marines to rescue Reid and Bella after they didn't respond back. The Marines crossed through a Xenomorph-infested sewer to approach the elevator leading to the relay tower however Winter and Chris were attacked by a Xenomorph called the 'Raven'.

They both awoke subsequently cocooned in the Raven's lair and met the disfigured alien about to kill them only for it to leave. After freeing themselves, the two Marines managed to escape from the Raven's Hive and exited into the sewers where they were met with the corpse of one of the Sulaco Marines, Private William Hudson.

While avoiding Boilers, the two Marines managed to link up with O'Neal but had to separate from each other once again. On their way to the elevator, the Raven chased after them, forcing Winter and Chris to weld doors behind them shut as they evaded the xeno and proceeded up on the elevator, meeting O'Neal once again who managed to retrieve their gear.

The three Marines regrouped with Bella and Reid then headed back to the Communication Tower where the four Marines held off Xenomorphs while Reid restored the uplink.

Once finished, the Raven appeared, chasing after the Marines and forcing them to separate. However, they managed to regroup once more. With the Raven hot on their heels, Winter piloted a Power Loader and used the machine to fight the disfigured xeno, ultimately killing it.

Afterwards, Bella and Reid had an argument after the pilot wanted to let O'Neal die after he was pursued by the Raven but he managed to convince Bella that it was Reid's decision.

Shortly after, the Marines used a truck to take them to the Weyland-Yutani base in order to save Bella from dying of the embryo inside of her after a Facehugger attached to her face back on the Sulaco. On foot, they fought their way across more aliens and tried to keep themselves from being spotted by PMC forces. They eventually managed to get past security and get inside the facility, finding a personnel manifest which they relayed the data back to Cruz however this alerted security. Wey-Yu forces began ambushing the team, which the team made through unharmed.

Along the way, Cruz informed the Marines of a USCM Marine from the Sulaco had survived and was being held hostage by Weyland-Yutani. O'Neal wanted nothing to do about this but Bella made him promise to save the Marine's life.

The Marines managed to reach the labs, in which O'Neal took a surgeon captive, to begin operating on Bella. The Wey-Yu employee however explained that removing the chestburster would kill her. Bella and O'Neal said their goodbyes before the Marine died from the embryo that erupted from her chest, which O'Neal shot.

Cruz gave the three Marines their new mission to save the captured Marine fromt he Sulaco. Fighting more PMCs, an APC, and a few scientists that grabbed a gun. They managed to get past more Yutani forces after the Queen broke free, killing many scientists and more security forces. They force their way through Xenomorphs and PMCs, managing to rescue the captured Marine. However, Cruz revealed that he knew that Bella would perish and he knew who the captured Marine really is, much to O'Neal, Winter, and Chris's enragement.

The captured Marine was revealed to be in face, Corporal Dwayne Hicks, the only sole survivor left from the Sulaco. Hicks explained how he was held by Weyland-Yutani for months and his file being mistaken for KIA. Cruz revealed that Wey-Yu also had an FTL ship on the planet that could help evacuate the surviving Marines. Reid immediately reported two squads of Marines fleeing to Hadley's Hope with Xenomorphs following right behind them.

While Reid and Hicks evaced to the APC, Chris and his team fought off the Xenomorphs while rescuing surviving Marines. The survivors began to head for the dropship that Reid was piloting, encountering heavy resistance from xenos, even a new breed of xeno called a Crusher but they managed to kill the beast and returned to the landing platform.

After dealing with the aliens, Cruz welcomed Hicks into the Sephora crew, however as Bishop asked Hicks's about his survival, the Corporal explained how he was brought out of cryo since he was the only ranking marine, but that the ship was on alert since Weyland-Yutani's PMCs boarded the Sulaco illegally. They decided to save the story for later, now focused on taking the facility and getting an FTL ship in order to escape LV-426.

Soon all of the surviving Colonial Marines mounted a full-frontal assault on the Weyland-Yutani facility, fighting through an army of PMCs and Xenomorphs. They even had to avoid the Xenomorph Queen after it had been recaptured by Weyland-Yutani only to escape when Raider 6-8 took it down. They managed to reach the FTL ship but were too late, but they got on Reid's dropship to take the FTL ship.

As they took off, they managed to breach the hull of the ship's hangar and crash land inside, but Cruz was injured and too weak to carry on.

Just when they were cleared, the Queen secretly boarded with half of her brood on the ship.

When the Queen emerged, Winter and Chris had to lure her into a trap by manually setting a cargo launcher to shoot the alien from out of the ship. Eventually, they managed to do it, seemingly defeating the Queen.

The xeno survived and got back into the ship, facing the dropship Cruz was in. The Captain was about to sacrifice himself only for Chris to throw him out and take his place.

The grizzled war veteran landed on his back roughly then noticed the Sergeant entering the damaged Cheyenne. "Sergeant Alder, what the fuck are you doing!?" He shouted into his comms.

"Taking this bitch for a ride, sir." Chris replied, his fingers dancing on the console as the dropship began to start up. The Queen ramming her head crest against the windshield.

"Marine, I am ordering you to get the hell out of there!" Cruz exclaimed.

The young man grimaced. "Negative, sir, the Corp still needs you." His crimson eyes trailed over to his friends. "Wish me luck, guys."

"Good hunting, kid." Hicks bid farewell to the young Marine.

"Godspeed, Sergeant." Reid saluted him.

"Give her hell, man." O'Neal looked away, accepting the fate of his fellow Marine.

Winter said nothing, his eyes wide with shock.

With a final smirk, Chris raised a fist. "Oorah to Ashes, Marines!" He yelled out the motto of the Colonial Marines.

"Oorah!" Winter, O'Neal, Hicks, and Cruz returned the battlecry.

Punching the throttle, Chris lurched in his seat as the dropship took off with the Queen grabbing a hold of the nose as she screeched in surprise. The alien hissed at the Marine. "You're coming with me, bitch. All the way on the express elevator to hell!"

He pilots the dropship straight to the ground, unaware of the fact of a strange wormhole opening in the earth as Chris and the Queen entered through it. The portal disappearing behind the Cheyenne as the FTL ship flew from LV-426's orbit.

A/N: That's the prologue, folks. Tell me what you think I should do when our Marine protagonist arrives on Remnant. Should he have all of the available weapons from the game as well as the legendaries? Should some of the characters in RWBY use one of the Colonial Marine firearms? Do you want pairings?

Please review and comment on this chapter but no flames or hateful criticism, I will not tolerate any of that.

Ignore my warning, I report you.

Peace out, everyone!