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.

Now to the other side of the battlefield

(RWBY)

Team RWBY, lost track of the individual members of HAND but could tell they were around if the sounds of gunfire, cursing, more gunfire, excessive cursing and what looked like lightning infused bricks sailing everywhere and hitting everything and everyone with large amounts of surprisingly accurate force.

Ruby was beginning to pant heavily. Having been in a fight for her life that had resulted in several deaths that she was responsible for, this was refreshing. But god it was hard work, she pulled the trigger, the sniper scythe boomed and a Grimm dissolved. Rinse, repeat, dash, slash, slice, fire, reload, fire, repeat. She was running low on ammo and on her aura.

Her eyes hardened "I'm my aura and my aura is me. I'm not yet done!" She called and she charged back into battle, recharged. She would make Harry proud of her. That was the one thing she wanted more than anything.

(Yang)

Yang's eyes were glowing red as she delivered kinetic powered punch, after kinetic powered punch into the Ursa and Beowulf swarm in front of her. There was a sickening crunch as fist met armoured face and the face lost. The mask staved in and the Ursa collapsed. However a Death Stalker and Creeper rushed her.

Her Gauntlets thundered and the Grimm fell apart. But the side effect of the shotgun was that the gas mains had been exposed and one particular shot had erupted into a colossal fireball taking out quite a few Grimm.

Yang spied a child backed up against the wall, and three Death Stalkers cornered him. Claws snipping and tails swishing. Yang was now insensate with fury. She reached out, grabbed one of the Death Stalkers and effortlessly removed its tail.

Long weapons were not Yang's speciality but with liberal use of her semblance she managed to kill the Death Stalkers. Her clothes were tattered and torn, covered in Grimm Ichor but Yang stood triumphant, the kid was alive. "Get home. Get out of the city."

The boy nodded and started heading home, Yang escorted him and turned and pounced on a bunch of Beowolves that had been following them. Yang used ther scarf to patch up her skirt, which wasn't revealing much but it was the principality of her state of dress.

(Yang and Blake)

They were the luckiest of the eight. They had managed to stick together, with Blake rounding the Grimm up and Weiss utilising her elemental glyphs to boost her speed to cut down the Grimm.

Unfortunately it wasn't enough. The horde of Grimm kept coming.

(JNPR and Sun and Neptune)

Sun Wukong and Neptune two of the twenty representatives of Mistral and subsequently Haven Academy. Those two were shadowing detectives and as a result were the first two on scene aside from Teams RWBY or HAND.

JNPR on the other were the other team fully deployed and had just gotten off the Bulkhead before the Vale Council had stopped all deployment and movement of the Bulkheads.

They immediately set to work. Jaune and Pyrrha working together and Nora and Ren. Jaune, had improved…dramatically. Harry the rest of AIL and NPR had banded together to make Jaune a much more effective fighter.

Jaune was in Harry's opinion a very unique fighter that really didn't need a Sword and Shield attire. Harry's aura was vast but Jaune's it seemed to outshine even Harry's and he had aura reserves that could rival Ozpin, and that was before his Aura disabling skill.

(Flashback)

Jaune hit the ground, bounced and convulsed as lightning dust erupted from Harry's hand straight into the blonde. As soon as it began, it stopped. Jaune lay there sweating, panting and slightly singed "How…is that possible? I mean no-one should be able to use all that aura!"

Harry grinned a thin smile and pulled Jaune to his feet "You're right. In a straight raw aura contest you can probably beat me. There aren't many people who are my rivals in raw power."

Jaune nodded. He spun his sword and shield and readied himself. This time it was Neville who entered the ring. "Why is it that no-one can defeat you or Harry and your respective teams?" Jaune asked as he scored to glancing hits on Neville, before maneuvering away from the crushing hammer strikes.

Neville grunted "Because…beating Harry and myself, requires several things and no ungodly aura reserves are not one of those things. Though it helps." Jaune rolled his body and shield effectively deflecting the hammer blow but saw his aura take a beating.

"The first thing is understanding. Academies teach you scenarios. The academy teaches you protocol for when things go sideways. That's perfectly fine but unless you've been in those situations then you have to understand that academic teaching and real life experience are completely different."

Jaune groaned as Neville kicked him in the chest and just recovered to avoid the massive spike on the hammer. "Okay. You and Harry have experienced scenarios that went sideways?"

Neville nodded "The next thing to remember is there is fighting and there is Fighting. In a tournament Harry and I are unlikely to do well as it involves showing off. Fighting is well…You've seen Harry and I go at it."

(End Flashback)

Jaune snapped out of his memory to help scissor the Death Claws stinger between his and Pyrrha's shield. Jaune smirked and hit a concealed switch with the back of his hand. There was a thud and snikt, no-one was sure which one was first. All that mattered was that the Death Claw barrelled through them.

Jaune spun right as Pyrrha turned left and the pair of them took down a Creeper Major. Meanwhile Nora let out a battle cry and helpfully reversed the knee caps on a more armoured than normal Beowulf Alpha allowing for Ren to take its head relatively clean off.

Team JNPR were a help to the situation but they were still not enough.

(HAND and NIKL)

Harry grinned as he literally hugged Neville "I knew you wouldn't leave me."

Neville chuckled "The Council tried to make us stop. We disobeyed and then they over ruled us and then Ozpin ordered us. We heard a terse voice."

"That was me. I literally had a family at weapon pointed at a family to get them to help me."

Neville's eyes widened "That's…"

"Dumb…Even for me. I know. I know. Right now I need more reinforcements."

Neville nodded "Ozpin's doing what he can. Last time I heard in the immediate area are Teams HAND, NIKL, RWBY and JNPR…" Neville was about to say something else when a multitude of pops, cracks and swirling lights appeared surrounding them.

Harry sighed as Hermione, Ron and the rest appeared from a Portkey. Hermione shrieked, ducked to the floor as Harry's weapon dropped open and a blast of energy surged over her. It slammed into the encroaching Boarbatusk shattering the face and dissolved into smoke, but not before it let out a squealing roar. "Fucks Sake!"

"Language!" Shouted Hermione as the adults gave him a disapproving look.

"Mr. Potter, please explain why you killed that innocent creature." Questioned Dumbledore his eyes twinkling madly.

Harry's eyes turned blue, he channelled wind dust through his body and he threw them to one side aside from Snape as a pack of Boarbatusk charged towards them. "Two things you utter idiot. 1) These things are arguably sentient but they are not innocent in anyway shape or form. This is why I have Snape. 2) You're stopping me from doing my fucking job."

Snape went for his wand only to find it in Harry's hand. Harry levitated the rest of the distractions up, leaving Snape with the son of his hated rival and most disliked pupil and a pack of mutated boars. "Potter, I demand you release me."

Harry wasn't listening and he turned to Neville "Seriously? You want me to babysit these assholes?"

"Hermione, Ron and Ginny insisted on coming then the rest came. Dumbledore wanted to see if he could negotiate…That's besides the point. You really going to murder Snape? I know you both hate each other, but Harry…This won't be killing in self-defence or even manslaughter! This is premeditated, calculated…"

Harry's eyes turned into a kaleidoscope of colours "Nev…If Snape dies. I have a plan…Just keep alert so we don't get any coming from behind or above."

Dumbledore and the rest could only watch in horror as the Boar like creatures went for Harry and in Dumbledore's opinion redeemed Death Eater "I must save Severus. I must stop Harry from going down an irredeemable path!" He went for his wand but it wasn't there.

Dumbledore's eyes widened…When Harry had flung them to one side, they had all lost their wands. This was calculated! This was cold blooded murder! They watched helplessly and in the current Students of Hogwarts eyes with glee as Snape was about to die.

Everyone was wrong. The moment the nine remaining Boarbatusks were millimetres from Severus Snape, Harry blurred out of reality. Harry reappeared, his metal toe capped boot crackling with lightning connected solidly with the leading Boarbatusk. It didn't have the chance to squeal as its existence was extinguished. Harry's sword bit into two more, but the fourth hit Harry square in the chest. Harry grunted, sword came free from his hand.

Harry channelled his aura to his hands and slammed his fists together and his emergency weapons appeared. His hands and halfway up his forearms were in a flexible metallic glove and when applied with aura and hit with the other glove, they encased the fingers and between the knuckles erupted three claws and on the forearms to the side were two really small, compact and extremely powerful assault rifles.

The rifles barked, bullets flew and the Boarbatusks fell into clouds of smoke. Snape looked pale, exceptionally pale and paler than normal. Harry fixed him a filthy a look and the Wizards and Witches made their way back to the ground.

Immediately once on the ground and everyone found their wands Hermione and Mrs. Weasley began screeching. Harry held his hand up "Harry here…Adam! Just the second I needed to here from. You've teamed up with Isabella? Alright look Neville and I are a little tied up right now, and I'm telling the pair of you consider us MIA…Look just stop the gribbly grabbly nasty Grimm from eating anymore people."

Harry hung up and spun his rage evident "First of all. All of you shut the fuck up! Calm the fuck down!" As he said that there was a deafening boom and shriek as four Nevermore blew up. "You'll attract the Grimm…The Creatures of Grimm want us fucking dead. Huntsmen and Huntsmen-in-training like Neville and Me…Shut up Granger not the time…We have a job to do. And quite frankly you idiotic lumps flesh in skirts and frocks are nothing more than bait for me to use."

Hermione looked like she was about to burst into tears it was Snape who spoke next "Then you using me for those Boar Grimm? Was proving a point?"

Harry nodded "Mostly…probably…Protection is a job my squad doesn't really do. Anyway, you want to help? Stay out the way, obey all the people with weird and possibly over compensating weapons with weird abilities and harass the Grimm."

With that Harry summoned his sword, attached it to his back and stormed into the fray. Neville behind him. Snape watched them go "We might as well have a look. If we're lucky we can grab the pair of them when they're weak."

(Other Squads)

Thankfully NIKL and JNPR were the heralds of Other Teams. Not just from Beacon but from the other three academies as well. Huntsmen from all years descended upon the City.

Team CFVY were amongst the first hitting the ground. Velvet rolled across the floor, grabbing Harry's shotgun two sword/sheathe combination. Velvet's fighting style hadn't really changed much but due to spending time with the wiry but incredibly strong first year that she wanted to call her boyfriend, her physical strength had increased.

She had adapted quickly, her semblance of mimicry sped up the process of learning new weapons and fighting styles. She readied the blade, grabbed the pump of the shotgun sheath reloaded and as she was about to fire when a Scythe sailed through the air and a battered, bloody and bleeding Harry appeared in front of her.

"Hey Velvet…Nice of you to join the party." Harry said collapsing slightly. Harry planted his sword and got up. He looked around and he could see more and more students piling into the fray. He even spotted a pair, one with silver hair and dressed in black with a mint green haired amazon in essence. She seemed to be wearing clothes that seemed a little tight.

"What is it?" Velvet asked, she looked and she noticed the olive clad girl and her eyes watered.

Harry's narrowed and he spun round. Thankfully CFY had cleaned up the area of Grimm and were now joining scattered first year squads. Meanwhile somewhere something exploded and Velvet heard Kobi Pow cackle maniacally.

Velvet turned to Harry "Is this how we finish? In the middle of a battle?" Her distress found five King Taijitu, a horde of Beowolves and a flock of Nevermore to come swooping down on them.

Harry snarled in fury. It caused Velvet to jump backwards, almost directly into the path of a King Taijitu head. Harry flickered out of existence and wrapped an arm around Velvet's waist and pulled her out of the way as the Snake Grimm bit into his shoulder breaking his aura.

Harry winced as the snake venom entered his body. He pulled Velvet to him "There's never been anyone else. Not ther, not anyone. Only you Velvet." With that he pulled the unmistakable sound of flesh tearing, muscle ripping, blood vessels popping and tooth grating on bone was heard as he kissed Velvet full on the lips. "Yatsu!" Harry yelled.

The big sword wielder lumbered over sword at the ready "I'll get you…"

"Get this fucker down. I'm gonna…oh bugger." Harry didn't get to finish as the Grimm pulled backwards and swallowed Harry whole. Several people charged forwards, Velvet amongst them. They were going to get Harry out before he dissolved in the Grimm's stomach.

However, as Professor Port, Professor Goodwitch and the newly recruited Professor Rose descended onto the Snake, it started to convulse. They watched in horror and fascination as the Snake dissolved.

Harry appeared and he looked a mess. His clothes were barely holding themselves together, shoulder had Grimm Fangs sticking out of it. His already scarred frame, littered with more such scars which were not healing at the current point in time. He was bleeding profusely from cuts and slashes. Furthermore he was covered in ichor and saliva from being digested by a Grimm and if they looked closely they'd see the remains of Grimm flesh in his mouth.

"Harry!" It was Velvet, he spun and just managed to spit the massive lump of Snake flesh out of his mouth as Velvet hugged him. She almost immediately started blubbering.

"Velvet." Harry said, she looked up at his grime covered face, only to find him kissing her full on. She did not resist at all. They broke apart, both were breathing heavily "I'm…not letting you go."

Velvet grinned and grabbed his hand tightly "As long as you never do that again! Why did you do that?"

Harry chuckled "I like my limbs and as cool as metallic ones are…I don't want to be a robotic Huntsman. Also, I wanted to find out if my bite is deadlier…It is."

Just then the approach of metallic boots disrupted them "Hadrian Branwen, the Council of Vale wish to speak with you. Do not resist."