Disclaimer: I don't own either RWBY or Warhammer 40k

Ruby Rose sat in her dorm with the rest of her new team thinking about what the future would hold for her. Not only was she now officially a Huntress in training but she got to lead a team consisting of her, her older sister; Yang Xiao Long, the silent ninja girl with a cat bow; Blake Belladonna, and the heiress of the Schnee Dust Company; Weiss Schnee, called team RWBY. All were currently preparing for bed after the long day in the forest and the team appointments. Dressed in her pajamas (which consisted of white sleep pants with roses on them and a black tank top with a heart shaped dog face on it.) Ruby was about to lay down after writing a note to her friends back at Signal. It wasn't everyday that you meet a space traveling soldier. Though he was a little rude in her mind, though that may not be his fault. She did always try and see the best in everyone, even people like Sean and Weiss who simply came off as thinking they are better than everyone else. But a loud knock on the door startled her and woke up the rest of her team. She gave them a confused look at why the someone was at the door. Receiving shrugs of equal confusion Ruby walked over to the door and opened it. To her surprise Sean was standing there, most of his weapons gone save for his knives. Weren't those supposed to be in a locker with the rest of his stuff?

"Uhhhh….hi." She eventually stuttered out as the much taller and more physically imposing man, who still had on his skull face paint raised an eyebrow. Slung across his shoulder was a duffle bag and in his hand was a Scroll, a collapsable, portable, holographic touch pad that was issued to the students of Beacon.

"I have been assigned to your team." Sean got straight to the point. Ruby's and the others eyes widened as Blake spoke up.

"Aren't we supposed to work in teams of four? And, no offense to you, but why would you join the school if you have a army to get back to?" The black haired girl inquired. Sean turned his head from Ruby towards Blake and gave her a deadpan look.

"Well now you're a team of five, and as to getting back to my regiment…...well that won't be happening anytime soon." The group of girls stared at him until Ruby moved out of the doorway and welcomed him into the room.

"Well then I guess we are team RWBYS!" She joyfully cried out. Sean looked at one of the others for clarification on why they were called that. Yang was the one to come to his rescue.

"The name is the first letters of our first names. R for Ruby, W for Wiess, B for Blake, Y for me, and now S for you." She explained.

"That's…...I don't know if that is due to laziness or not." Sean said. That seemed like a really lazy way to name a team but whatever, he was now apart of a team consisting of teenage girls, who were more than likely had no idea what it was like to fight in a battle against anything more threatening than these Grimm. In other words, they would have to work really hard to earn any amount of his respect. But that didn't mean he wouldn't work with them, just that he would act how he saw fit, not what he was ordered.

"Well lazy or not it's our name now. But enough about that, why do you still have your "knives". Weren't you supposed to leave them your locker along with your other weapons?" Yang asked him. It was school policy to have students keep their weapons in the lockers as well as their battle clothes. Both of which Sean had on him right now.

"I told them taking the guns was fine, so long as I get it back in the condition I left it. However when asked for my Fang, Reaper, and Claw I made it clear that the only way I would part with these is if they were taken from my cold lifeless corpse." He said with a clearly amused smile. The team remembered the threat he gave them about touching his blades on the Bullhead, but they didn't think he would do it to teachers as well!

"WHAT! Why!? How did the let that work?" Weiss cried out from her sitting position on her bed.

"I told you guys….girls, that no one touches my knives. Though that Glynda woman looked ready to test my statement, though Ozpin told her to let it be…..after I drew my Fang to show her I was serious." The red bandanna wearing boy said with a clear amount of pride. He showed the staff that while he may be a student now, he would not play by their rules.

"Well thats only slightly disturbing." Blake mumbled from her bed. Ruby and Yang both looked at each other and shrugged. Ruby would do the same if someone tried to mess with Crescent Rose, and Yang would kill anyone who messed with her motorcycle. So they could level with him to some small degree. Ruby looked around the room and saw that their were only four beds, all occupied.

"Ummm….I don't know where you are going to sleep." She said sheepishly as she turned back to Sean. The soldier looked around and picked a clear area on the floor and tossed his dufflebag down.

"The floor is fine." He said as he opened the bag and took out the basic hygiene utensils that Ozpin gave him, as well as his spare fatigues and grey shirt and walked into the adjacent bathroom. The remainder of team RWBYS looked at each other and began discussing their new team member.

"I don't like him. He is rude and dangerous." Weiss huffed as she crossed her arms.

"Keep in mind all we know about him is that he isn't from here and that he is a soldier. Who are we to judge him when we lack to the full story." Blake defended Basilone. She would not cast judgment on someone she barely knew, as she hoped her team would do to her when she told them her secret.

"He threatened to kill Ruby!" Yang spoke loudly at Blake. She would simply forgive someone for threatening her little sister over a knife!

"Um...Yang he also threatened to kill the teachers." Ruby said as the group then got into a debate on whether or not Sean was a good person. Ruby and Blake defended him as Weiss and Yang tried to shoot him down. The conversation came to a swift close as the bathroom door opened, steam from the shower entering the dorm as Sean walked out, shirt off as he was about to put it on. They couldn't see him that well through the steam, however Blake did notice something.

"What are those!" She asked pointing to Sean. He let out a loud sigh as the rest of the girls looked at him.

"Lessons." Was his sole comment as the group saw what Blake had freaked out about.

He was covered in scars, his entire chest looked like it had been cut up numerous times, he had a massive bite mark on his right shoulder slightly above his skull tattoo. And without the skull face paint they now had a good look at his face. It was muscular and defined like the rest of his body but it also had various small scars from something very sharp. All in all, he looked like he should be dead 15 times over, but here he stood. As they watched him put his red bandanna back on after covering his scars with his shirt, Sean placed his knives within reaching distance of himself as he laid down on the floor, using his bag as a pillow.

"Lessons!? What kind of lessons leave those kind of scars!" Yang yelled at him. She may not like him very much but damn, no one deserved that.

"Ones that keep you alive." Was his cold response as Sean laid on the floor. Hell scars were a good thing. It meant whatever tried to kill you failed and you lived to fight, and die, another day. Plus you have more incentive to learn if the result of failure is a mortal wounding or death. That's what life in the Guard and on Catachan is like. You learn and adapt or you die.

"But how." Ruby whispered out. As the youngest and most innocent of the group the sight was the most shocking to her. She had heard stories of Hunters and Huntresses getting scars from fights with Grimm that Aura couldn't heal but seeing it was something different.

"Home was a rough place. Now as much as you all would love to play twenty questions don't we have class at nine tomorrow morning?" Sean asked as the rest of the group reluctantly started to head to their beds and call it a night. An hour latter most of them were asleep, the only two up were Sean and Blake. The latter busy reading a book with Sean still on the floor.

"So I was going to ask this latter but since it's just us two now I figured why not." He spoke up from the floor. Blake looked away from her book and towards the Catachan as he sat up and looked at her.

"What's with the cat ears?" His question shocked Blake to her core. He knew! How? She hadn't told anyone and her bow should have hidden the fact she was a Faunus.

"...Ho-...How did you know?" She whispered wide eyed. Sean raised an eyebrow at her and spoke up.

"...It is not that hard to notice, and on top of being turned into tough S. home makes you a very perceptive person. After all it's not always the largest things that are the most dangerous. But really what the fuck is up with the cat ears? I saw some people with other animal parts in the halls and it was weird."

"...I'm a Faunus." Blake whispered and held her head low waiting for the outburst of rage. Only it never came. She looked up slowly and saw Sean still looking at her.

"...The fuck does that mean?" His question caught her off guard again. Everyone in Remnant knew what Faunus were! Oh…...he wasn't from Remnant.

"It means that I am a human with animal traits…..in my case a cat. Faunus in general get a bad rep, but that's only because we don't like being pushed around all the time and being treated as second class citizens!" Blake informed Sean as she got more angry as she talked.

"So. You are an Abhuman?" Sean asked. His work choice caused Blake to narrow her eyes at him.

"So what if I am. I am still human." She replied.

"Huh. Well thanks for clearing that up." And with that Sean went to go back to sleep. Blake blinked several times until she threw a pillow at him. Sitting back up Sean looked at her with an unamused expression.

"What?" He deadpanned.

"That's it? Just 'huh'? No freak out or anything?" She asked.

"That's it. Look, had I been a more…..fanatical member of the Imperial Creed, the religion from where I am from, I would be freaking out about how 'mutants should not be treated the same as normal humans and they are a blight on mankind'. But I'm not. My regiment makes use of Abhumans known as Ogryn all the time and guess what? I don't hate them, in fact they are fun to have around cause they like to blow shit up with us! That and I am from a Death World, a planet where literally everything wants, and has adapted to kill you. So my availability for worship and going to church is very limited, in fact we have to relocate our cities time and time again to stop the jungle from consuming it. Because of that I haven't seen an clergyman since I was 12. So while I still follow the Imperial Creed, I have a less…..fanatical view on non-humans. As do a lot of Catachan actually. One of the many reasons we are unpopular with the other regiments." Sean let out a slight laugh at the end. He looked at the cat faunus as she stared at him.

"Now I am going to bed now. Or try at least, going to be difficult without the threat of immediate death….ahh I will psych myself out. Do be careful if someone wakes me up, I don't want to be kicked out my first day because I murdered one of you for startling me." Sean said as he laid back down and pulled his Devil's Claw closer to him. Blake blinked a few more times at the last part as she slid further into her bed and waited for morning. She had a slight smirk as she knew at least one of her new team members didn't care about her being a Faunus. She could only hope the others were the same.

Sean slept about as well as any Catachan could. That meant that while still trying to sleep he was in a state of high alert and would pounce at the slightest noise. You had to learn to be a light sleeper on any Death World other wise, like most scenarios, you are dead. With that being the case when he heard the sounds of movement near him he sprung up and went into action. He tripped whatever was near him and pulled his knife to it's throat. He was treated to a terrified Ruby looking at him with her silver eyes large with fear. He let out a few breathes and got off of her. She was still in her sleepwear but was holding her school uniform.

"Sorry about that. Force of habit." He did his best version of an apology. Looking out the window he could see that the sun was just barely coming up now.

"Your force of habit is to kill whatever wakes you up?" Ruby asked with an incredulous expression. She got a shrug as an answer as Sean stood up and offered her a hand. Taking it she was quickly pulled up and standing in front of Sean.

"I see that you are up early." He noted as Ruby gave him a smile.

"Yep! I was going to get dressed and wake everyone up for our first team mission!" She said energetically.

"Which is?" Sean inquired.

"Decorating!" She cried as she pulled some posters out of nowhere. Sean stared at her for a few seconds trying to comprehend the ridiculousness of that "assignment" before looking down at his bag.

"I think I am done." He joked as he made note of how little he had in comparison to the girls, whom had entire suitcases. Ruby let out a small giggle as she went to go change into her uniform. Sean looked around the room and decided that despite them not being prepared for what horrors truly lied in wait in regards to fighting monsters and creatures, and that half of them hated him….for some fucking reason, he liked this new group. It was better than what he thought would be waiting for him when being thrown through the Warp. Though he did still think that this group of humans were a bunch a pansy bitches for being nearly wiped out by the Grimm. Hell he would pay to see any of them survive his home world for a day.

So while his situation was not ideal, it was not the worst either. The most important thing was that he still got to do what he loved the most. Kill.