RWBY: The Unknown Sibling
(Harry is two years older than Ruby and three months older than Yang)

To the Anon who mentioned my timelines in ages. He is correct, Harry is the same age as Yang.

A/N: Thank you to everyone who has liked this story so far. As for those who have critiqued saying that they are slightly confused, I apologise. My brain goes quicker than I type and when I plan it's slightly better. I will try to make things clearer.

As for last chapter with Velvet and Dumbledore's group, I'm sorry. This is going to hopefully make it clearer.

Velvet found herself in Ozpin's office. She was terrified, she would openly admit it. She had never been in Ozpin's office without her team. She had never seen him; face to face without him being surrounded by other people. But now, she was terrified.

Both of the newcomers and Ozpin. She was sure that she had done something wrong.

"Miss Scarlatina." She jumped, it was Ozpin. She wanted Harry right now. Harry would be making the situation a lot worse but she'd feel better.

"Yes?"

"Are you okay?" Asked Ozpin.

"Positively terrified. First of all what the fuck? What gave them the right to take my possessions without asking? Another one who the fuck are you holding me at weapon point? How did you find me? Who are you? What do you want?"

The sallow skinned man sneered at her "If you were paying attention…"

"Severus." Velvet gulped, she knew the name. Now that she heard the name she was now able to deduce the group. The old two who looked like a grandfather and grandmother: Dumbledore and McGonagall. The swarm of red heads: Weasley's, the red headed girl was Ginny…Something about her unsettled Velvet immensely. She was the one who summoned her scroll.

The other girl must have been Hermione. She was the one that had gotten the drop on her. She looked over the Weasley's with vague interest the only ones that seemed interesting to her were the two with impish grins on their faces.

Finally that her to the last six members of the party: Severus Snape, Remus Lupin…he smelt a lot like a Wolf Faunus but also had the stench of a Beowulf encompassing him. It was taking all of her restraint not to succumb to her rabbit heritage.

The last four seemed to be some sort of officials, Law Enforcement possibly. But the older and taller of the officials appeared to be the boss.

Hermione snapped "Girl, whowereyoutalkingto? Howdoesthisoperate? YouwilltelluseverythingyouknowaboutoneHarryPotterandNevilleLongbottomandyouwilldosorightnowotherwiseIwillhexyousobadly."

Velvet smirked, she saw that Hermione still held her scroll "It's called a scroll. It's a communication device and I'm sorry? What did you say?"

Ozpin shook his head "Miss Scarlatina that is an unfair thing to say. If I remember correctly you were a bit like Miss…"

"Granger, Hermione Granger." Hermione replied breathing deeply.

Velvet blushed slightly "My apologies."

Hermione nodded, decided not to aggravate the student and repeated her questions much slower. "First answer my boyfriend. Second it is linked to me through genetic binding. I don't know anyone by those names and if you attempt anything I'm pretty sure my Headmaster will get involved and my boyfriend will."

Dumbledore and Ozpin nodded to each other and soon enough the two Headmasters, staff and guests began an elaborate game of information gathering. It was Ozpin who went for the kill "You want two of my students to do a job for you."

It wasn't a question, Dumbledore sighed "Yes. Harry Potter and Neville Longbottom have a very important duty to perform, one that only they can perform."

(Team NIKL)

Neville grabbed Lava as Kobi grabbed Isabella. They began to move through the tunnels back into Vale. Neville had activated his scroll, he was trying to get in contact with either Harry, Velvet or Ozpin. The first two because they'd alert everyone else and as for Ozpin this was his problem.

As he moved, he sneezed. People were talking about him. He didn't like it one little bit.

As they left the underground rail lines, they bumped into Professor Cliffe "You need to report back to Beacon."

Neville gulped. He really didn't like this.

(RWBY and HAND)

At some point during the night, Ruby had vanished after Zwei had needed to go for a piss. The annoying was that Damania hadn't seen Ruby leave. "What do you mean she's gone? How can you have lost track of her?" Growled Harry.

Damania gulped as did the rest of the teams. They knew Harry had a temper, they knew that the scroll call had unsettled Harry, they were in enemy territory which wouldn't unsettle Harry at all but it was the fact that his SISTER was with him.

Just then his scroll rang. It was a withheld number. "Answer it Harry." Ordered Oobleck.

"No I haven't been in an accident that wasn't my fault…If you call me again I will find you and pull your innards out with a rusty spoon." He growled.

"It's Headmaster Ozpin."

Harry paled "My apologies Ozpin. Is this important because…"

"I understand outside of Vale with Team RWBY. Is everything okay? I'm hearing suppressed anger in your tone." Asked Ozpin calmly.

"No, everything is going sideways or about to go Sideways. We are a Squad Leader down and not even the heightened senses of my Team were able to detect her absence, so I am slightly miffed and totally holding it together."

The last sentence got snorts and weak chuckles from everyone. In his seat Ozpin nodded as did the people in his office. Glynda had informed him of Harry's code speech. It was ingenious it basically meant the opposite of what he was feeling. Right now Ozpin understood that Harry was on a borderline rampage.

"Don't worry about Ruby Rose. I can assure that she's alright. Don't have faith in her…Furthermore rampage when you feel like."

Harry nodded mentally translating 'Worry about her. Can't say if she'll be alright. Have faith in her and be careful with who is nearby."

Both groups heard a sigh and Harry carried on speaking "Why have you called? Why a withheld number specifically. Is everything okay and you need your Angry Little Monsters back?"

Angry Little Monsters was a joking paradoxical statement about Team HAND. They had anger issues, had semblances that helped them fight and they possessed very little safety of their enemies or friends and they fought like monsters, plus it didn't help that they were all close to Ozpin in height. Thus Angry Little Monsters.

"The people you and N told me about. They're here. In this office…They had a confrontation…"

Everyone heard the sound of a lightning bolt being discharged into a building "…is Velvet okay?"

In the tower, the wizards paled. They were listening in and they were for the better term helplessly confused. Dumbledore and Hermione were just keeping track. So far they had worked out, someone had gone missing and was important to Harry, he was not in the city, on the verge of destroying something in panic. Then they heard the name Velvet.

"Haz, it's me. Its Velvet…There was an altercation between them and myself. I'm okay. CFVY is here. I'm fine. Remember you need to remain calm and find Ruby. I love you I'll see you soon."

(HAND and WBY)

Harry hung up "I'm still pissed. We have a job to do. That is find my sister, follow up on RWBY's investigations…and get us all back to Beacon. I have a seriously bad feeling that this already sideways mission is going into the fan." Harry rumbled.

Adam nodded, Nanuuk unsheathed his claws and Damania popped her knuckles. It was time for yet another fight but only this one was going to be exceptionally bloody.

(Ruby)

Ruby found herself being dragged along the ground. She remembered falling and then fighting a member of the White Fang and then she was knocked out. She had no scroll or weapon, as she came around she heard the sounds of machines whirring, people yelling and someone saying something about 'Blown to the moon'.

She looked and she saw the machines from the parade in Vale. Atlesian Paladin something or other. Harry had been most dismissive about them. She trusted Harry on most things especially when it came to robots and humans.

(Flashback)

"Better to be human and use humanoid weapons Rubes…Humans can't be hacked or controlled easily. We can be ordered to do things but when humanity threatens humanity, those threatened rebel. Machines, yes they are useful and make our jobs easy but the moment some asshole puts machines in charge of human safety, I hope you're not on the frontlines Ruby…Make sure you have popcorn and watch those controlling the machines run around like headless chickens." Harry explained as he calmly chucked her around the sparring ring.

"Is that why you don't like Atlas?"

"Partially, and the fact that Vale Authorities think sunlight blows out their arses. Unfortunately Atlas has taken it to their heads. That is why I don't like them…oh and the Faunus prejudice, discrimination it's heaviest in Atlas…So…"

Ruby nodded "If you're in detention during the festival it's because you're beating up Atlas students. Got it."

(End Flashback)

"…Found something you might wanna see." Ruby heard. "Take me to your leader…much more fitting." She thought.

"Is it good or bad Perry? Because lemme tell ye, I have had a day." Replied Torchwick from his office.

Perry shrugged "It's a little girl…"

Torchwick appeared, cigar in hand "That would be bad." He paled as he made the connection between the girl he fought on the roof, and the teen with the evil looking sword and male version of her. "That would be very bad indeed."

(HAND et al.)

Harry's torch was in his hand, his sword was prepped as he and his team operated on clearing the street. Yes it made them look odd but when Harry had got the drop on a White Fang patrol and incapacitated him, the tense snickering had ceased.

"Ruby's scythe!" Called Yang as she extended her punching gloves. Harry nodded.

"This is bad, she never goes anywhere without that thing…I really wish Neville were here."

Adam nodded "Me too. I'd feel more comfortable that we have his armoured suit and hammer with us."

"You think she fell?" Weiss asked.

"Fell?" Exclaimed Oobleck as he zipped over. Weiss indicated downwards.

"Down there?"

"Oh my…of course!" Oobleck remembered something.

"Oobleck, I'd appreciate a proper lecture in class. Right now, story, facts, beginning, middle, end and condense." Harry rumbled.

"Mountain Vale, expansion of the City. Destroyed by Grimm…" Oobleck began rambling.

"Damania…" Oobleck gasped as Damania caught him in the stomach.

"Condense."

"People used to commute from here to the inner city. As the attacks increased, they began to evacuate into the metro tunnels."

Harry paled "Built an underground city…that is fucking amazing. Pain in the ass but amazing. Those train tracks lead into Vale…Please tell me they were sealed off."

Oobleck nodded "Should be…Why?"

Harry gulped "Bad feeling, very bad feeling. We're going to need to call Vale, Beacon and find where the train lines lead to and evacuate everyone in a five block radius."

"We have no signal." Said Blake.

"Shit."

Oobleck snapped his fingers "Attention. It worked for a while. Then an explosion happened, subterranean Grimm…Vale sealed off the tunnels."

Harry collapsed to his knees and his body to convulse, he coughed, hacked and vomited up what looked a biscuit and a raisin. "That's evil Oobleck. Now let's go down into the Underground, get my sister and take out the crooks."

Oobleck took on serious composure and his thermos turned into a strange looking club. Harry's eyes widened "Bringing the heat Doctor?"

"Of course. I always do."

Harry looked at his recourses "Expect the worst, prepare for the worst. Take out everything with extreme prejudice."

WBY gulped "Isn't that illegal?" Stated Weiss.

"We are to capture bad guys if possible but when in Grimm territory not possible. Besides…THEY TOOK MY SISTER. Screw laws, this is personal." Harry growled as dust wrapped around him.

Nanuuk and Damania nodded "They took a member of the pack/pride, we get them back."

Oobleck looked at Team HAND with a wide eyed expression "This is what the Headmaster meant by Little Angry Monsters."

(Ruby)

Ruby grunted as she hit the ground due to Perry. Torchwick chuckled as sauntered forwards "…You are so much easier to handle without that oversized gardening tool of yours."

Ruby snarled at him and charged him blindly, only to miss as Torchwick stepped to one side chuckling as he did so. "I, really did need this Perry, thanks." The Faunus stood still.

Torchwick sighed and dropped in front of Ruby "Seriously, Red…How did you find this place?"

Ruby looked at him and tried to look intimidating. What was it Harry said to her?
(Flashback)
When on the floor with your speed, you can spit in there face. Kick them in the nuts…harder the better and then run. It might help all I'm saying."
(End Flashback)

Ruby coughed and spat directly into Torchwick's face. The bowler hat wearing jerked back, he stopped and let out a whimper as he collapsed to his knees.

Ruby vanished in a swirl of petals. Torchwick looked around, from his disadvantage point on the floor he couldn't quite find Ruby. But soon enough he noticed her running "Appears…she has some tricks…So do I." He raised his cane and fired the grip.

Ruby felt something grab her and soon enough she found herself being dragged back "That hurt you little…We're not done yet."

Just then an explosion rocked the cavern and a small pillar of smoke appeared from an underground flat.

(Minutes before HAND et al.)

"Four Faunus covering a flight of stairs built into the wall of a cellar. Our way down." Damania said using Harry's binoculars.

Oobleck nodded "Here's the plan…"

"Doctor you distract them, WBY keep an eye out and HAND takes them down. It's what we do." Nanuuk said. Before he began to climb the building they were hiding in.

Nanuuk pulled up Adam and they both in turn pulled up Harry with Damania scrambling up herself "How do we cross?" The Lioness Faunus asked curiously.

"Harry, just like the initiation." With that Adam turned and ran for the building edge and jumped. Harry concentrated and a platform of air materialised under Adam. Soon enough more platforms appeared allowing Adam to bounce across. Damania and Nanuuk followed suit and the moment Damania crossed to the third platform, Harry followed collapsing them as they went.

Harry land off balance and crashed into the wall cracking it. Unfortunately it roused an Alpha Creep but before it could do anything Harry had covered his arm in lightning dust and activated it by ramming it into the Grimm's mouth destroying it. Harry pulled his arm out to see that his arm had turned red and that the darkness had corroded the spot it was in "Huh, Creeps cause corrosive damage upon death."

They made their way down the stairs as Oobleck walked outside and taxi whistled. HAND smirked as the four Faunus rushed out the base of the building. HAND were on the second floor "This is going to hurt." With that Harry rushed out the long since broken window and managed to dropkick one of the Faunus. The Faunus, yelped. Spun around only to find herself gasping for air and soon enough passed out.

Harry cracked his knuckles and hit two with bolts of lightning. The Faunus grunted and went for their guns only to be blindsided by Nanuuk and Adam. Meanwhile Damania stabbed her opponent through the lower leg and as she began to scream, Harry and Damania kicked her in the head knocking her out.

Oobleck dropped the Faunus he incapacitated "Good plan ,poorly executed. We required more details…But it worked. Now off to save Miss Rose."

Oobleck fought to shook his head, HAND were an interesting team. He liked interesting. They descended the stairs and they prized the door open. Harry grabbed and unfurled Ruby's Scythe "Too damn light."

They found themselves in a tunnel and upon following it found themselves in the Underground Mountain Glenn "Nice construction. In here." They bundled themselves into a building as a small squad of Faunus rounded the corner "You here anything? Fred, Ted, Chloe and Amele should have been back by now."

"Probably dealing with Grimm."

Oobleck turned to his students "This is going to get messy."

"Parameters for combat?"

Oobleck sighed "Do…do…what…needs to be done." He said slowly. He wasn't an idiot, his gut told him that giving this order meant turning Team HAND loose on the enemy. He was a teacher, they had his student, they were threatening Vale. Appropriate force. Oobleck wouldn't sleep well but he would sleeping knowing he unleashed a justified terror.

"Alright breaching position. I'm on point." Harry ordered as he crept in front of the door. WBY and Oobleck got into his position. Harry charged his hand with Earth dust "Ready or not here we come assholes." With that the stone fist connected. A deafening boom was heard and the Hunter team was moving.

(Present)

"Perry, could you and the boys take care of this?"

Perry turned to see an explosion and Faunus falling backwards. Ruby's eyes widened as she saw Zwei, Oobleck and her Team and HAND rushing towards them. Ruby kicked Torchwick in the knee and took off running.

"Somebody kill her!" Shouted Torchwick.

Harry didn't hear what was said but he could guess and assault rifle fire started streaking passed his sister. His sword spun and it turned into its rifle form and he began to return fire.

Where the Faunus were wild and uncontrolled, Harry was precise. Each round of his going exactly where he wanted it to.

Soon enough there was a firefight going. The Hunters and Huntresses were busy reuniting Ruby and her Brother whilst taking out any White Fang in their way.

Harry found himself blocked by a bull Faunus. The Faunus forgoed any fighting style but instead rugby tackled Harry, who dived out the way, changing his rifle as he went. Harry unsheathed Crescent Rose and effortlessly decapitated the Faunus.

Ruby didn't see what happen but she was shocked by the blood and quickly realised what Harry had done. She would ask why later the rest of team RWBY were shocked at how casually Harry had killed his opponents.

HAND took it in their stride. They knew that this would be brutal but not like this.

"Attach the car and we're leaving."