Ben 10 belongs to Man of Action Studios and Cartoon Network

Monster Hunter belongs to Capcom

RWBY belongs to Rooster Teeth and Monty Oum

I only own my OC and Ultimate forms

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Opening - Ben 10 Ultimate Alien Theme

https://youtu.be/cxUbzV__dUI

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Bumblebee rocketed down the streets of Vale. Yang taking turn after turn, Neptune hanging onto the back. Eventually reaching an alleyway and stops, Neptune was shocked with awe and terror. his goggles were askew and his hair was a mess.

On the rooftops above, Jack is in his Barioth form. It is a cat-like wyvern with winged hands, white scales and body, brown spikes all over it's body, an earwig-like tip at the end of the tail. It had a pair orange, 3 feet long sabers on its mouth with the tip being bloody red. And the MonTrix symbol on its chest.

He leapt down into the street stopping next to Yang.

"Whoa, what the heck is that?" She asked.

A bright flash of light blue light consumes Barioth as it turns back as Jack. "Barioth. Fast, deadly and can give even the best hunters trouble." He explained.

"C'mon, my friends right in here." Yang said.

"And where exactly is...here?" Neptune raised his eyebrow.

Inside the club the music was blasting as Junior stood behind the bar fixing his tie. It was opening time in an hour or so the DJ stood alongside Melina and Miltia Malachite standing next to one another.

All of the sudden two of Junior's henchmen come in trying to close the door behind them. "Hurry! Close the door, she's coming!"

Junior saw this. "What are you two idiots doing?!" He yelled. Suddenly, the doors were blasted open. A new song began to play as Yang walked in.

"Guess who's back?" She said, with a smug look on her face. Eight guns were simultaneously pointed at her face by Junior's goons, the club music began to cut off, annoying her. Yang glares at the DJ booth.

The DJ pops his head out, seeing Yang staring at him and lifts the needle off the record before taking cover. Neptune peers out from over her shoulder.

"Yeah," He said. "So could you define friend for me?"

"Just try not to think about it." Jack said walking up next to her.

"Stop, stop nobody shoot." Junior said the henchmen lowering their weapons letting him pass. "Blondie, your here... why?" He ask, as if nothing happened.

"You still owe me a drink." Yang said dragging him back to the bar.

"Whoa, what a woman." Neptune said, before noticing the Malachite twins as he puts on a suave look. "Sup."

"Whatever." The two harrumphed before walking off.

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Across town Blake, Sun and Emma arrived at the White Fang meeting spot. Blake analyses three lines on the corner of the warehouse, resembling a claw mark. Blake leaned over to see two horned Faunus entering.

"This is it" Blake said.

"You sure?" Sun asked.

Blake glares at him. Sun raised his hands defensively as a response. "You know what I'm just going to take you word for it." Sun said.

"Hold on, you guys better take these." Emma said, handing the two an ear piece each.

"Smart, that we can stay in contact with one another." Blake said putting hers in. Blake undid her bow as she and Sun turned the corner. Emma climbed up the drain pipe leading to the rooftop across from the warehouse giving, her a good view through the windows.

The guard lets Blake and Sun through to their right is a box full of masks. They both take one and walk down the corridor. A White Fang member leads in the two Faunus ahead of them. "New recruits, keep to the right."

"I don't get it," Sun asks. "If you believe what your doing is right, why hide who you are?"

"The masks are a symbol." Blake began. "Humanity wanted to make monsters out of us, so we chose to don the faces of monsters."

"Man, that sounds dark." Emma's voice came over the earpiece.

"So was the guy who started it." Blake responded.

Sun looked down at the mask. "Always sunshine and rainbows with you." He said before putting it on.

The two finally made it into the main room where there is some chatter they keep to the right with the others waiting for the meeting to start.

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On the rooftop outside, Emma sat keeping a watchful eye on the meeting, she had managed to hack into the security cameras with her Nemetrix and Jack's Plumber Badge, who gave it to her, and had a good view of the meeting inside. She could see Blake and Sun mixed in with the crowed.

A White Fang member began to pace around the stage as the meeting began. "Thank you all for coming. For those of you who are joining us for the first time tonight, allow me to introduce a very special comrade of ours. I can assure you, he is the key to obtaining what we have fought for, for so long."

Everyone looked to the left there stood Roman Torchwick. "Thank you, thank you, please hold your applause." Roman said as he took to the stage,

"What's a human doing here?!" A female Dear Faunus, yelled pointing at him.

Roman looks at her "I'm glad you asked "Deerie". Now I'll be the first to admit, humans are the WORST." He gave a little salute "Case in point. So I understand why you would love to see us all locked away, or better yet: killed!"

"Is he going with this or...?" Sun asked Blake.

"But, before the claws come out, I'd like to mention the fact that you and I all have a common enemy. The one's who control, the people pulling the strings the dirty rotten humans that run our kingdoms!" Roman began listing things off while counting on his fingers. "Government, Military. Even the schools, they're all to blame for your lot in life!"

The recruits and some White Fang members were cheering. Blake and Sun looked around, not liking where this was going. "And they're all pests that need to be dealt with," Roman continued. "Fortunately, I'm the best exterminator around. No offense to any rodents in the room." Roman snapped his fingers.

The tarp behind him dropped to revile a giant robot, one of the Atlesian Paladins bearing a white fang emblem. The crowd erupted in cheers.

"That's not good." Emma said.

"Uh... That's a big robot." Sun said, a little intimidated by its presence.

"How did he get that?" Blake asked.

"As some of you may have heard, this right here-" he knocked on the shin of the robot. "Is Atlas' newest line of defense against all the scary things in the world. And thanks to some generous business partners of ours, we've managed to snag some of them before they, uh, hit the shelves."

"Now many of your brothers have already moved down to our new operation in the south east. If you want to stay in the city, that's fine but if you're truly ready to fight for what you believe in, this is the type of arsenal I can provide you."

The crowd cheers, ready to begin their instruction.

"This isn't good." Emma said.

Blake looks over to Sun. "We should get out of here."

Then the White Fang commander speaks up. "Will all new recruits please come forward?" The recruits began moving forward.

"Welp!" Sun said as the two tried to figure a way out of this.

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Junior placed his glass back down onto the bar. Yang had been asking him questions about Torchwick and anything else he might have heard. "I don't know!"

"How can you not know?" Yang asked folding her arms.

"I haven't talked to him. I haven't seen him since the night you first came in here. He paid upfront, I lent him my men, and none of them ever. Came. Back."

"So where did they go?" Neptune asked trying to help.

"What kind of stupid question is that? They never came back! Who is this guy?" Jack dragged Neptune back.

"Forgive him, he's new to this." Jack said.

"So, don't worry about him worry about me," Yang said, pointing to herself. "If I don't find what I want!"

"I already told you everything! Torchwick hired my boys and I guess he wasn't happy with them" Junior said before looking over to his boys who were lounging about the club. "Which is something I can relate to!"

"C'mon, guys." Yang said turning away, Jack and Neptune following her out.

"Did we get everything we need?" Neptune asked.

"We'll we got everything we can. Hopefully the rest of the team is having better luck." She said.

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The crowd of White Fang recruits cheered, hyped from the speech Torchwick had given. Sun leaned over and whispered into Blake's ear. "What are we going to do?"

"I'm thinking." She responded looking around for an escape route. No matter what way they took, it would look like they were leaving.

Torchwick was about to put his cigar in his mouth, but then he noticed the blond-haired monkey Faunus and the black-haired cat Faunus. "He sees us." Sun said. 

Torchwick tosses his cigar aside and walks towards them.

Then Blake noticed the fuse box and an idea came to mind. "He can't see in the dark." She said, drawing Gambol Shroud shooting the box. The lights go out and the crows panics

"Don't let them get away!" Torchwick said, grunting as he hit something.

"Sun, the window! "Blake called out.

"Stop them!" Roman called out, followed by the whirring of machinery.

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Emma jumped across the gap to the roof across from the warehouse. Suddenly Blake and Sun broke through the window, before the wall was blown out revealing the Paladin chasing after the two of them.

"Guys!" Emma yelled. After jumping a rooftop, she slams the Nemetrix symbol on her chest as she transforms. "PANUNCIAN!" The natural predator of Ditto roars out as she jumps on rooftops faster as she gains on Roman.

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Blake and Sun continue hopping from rooftop to rooftop, hoping to get away from the robot controlled by Roman. "So you wouldn't happen to have," He said as he jumps to another roof. "Oh I don't know," Another jump. "Some form of backup!"

"I'm on it!" Blake yelled as she pulled out her scroll. Panuncian was gaining on the robot, but had no long range weaponry on her arsenal.

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Weiss got down to the ground level of the CCT building, when she picked up her scroll as she walked out of the elevator. "Everyone!" Blake yelled. "If you can hear me we need-"

"HEEEEELLLPP!" Sun yelled over the line. Weiss rolled her eyes, but gets a smile on her face, ready for some action.

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Ruby stared at her scroll. She had boarded up the dumpster to keep the rats in.

"They got a robot!" Sun yelled. "And it's big, really big!"

"Oh, I am not missing this!" Ruby said, running off to join the fray.

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Yang and Neptune sat on Yang's bike, Bumblebee, as Jack stood next to them. "That Torchwick guy's in it! But not like, it didn't eat him... He's like, controlling it or something!"

"Where are you guys?" Yang asked. They heard rumbling. The three turn to see Blake and Sun running from the paladin, and Panuncian running from behind.

"HURRY!" Sun yelled from both the Scroll and in person.

"I think that was them!" Neptune said.

"Yea I got it." Yang said, revving her cycle. "Jack, are you-"

"Just go I'll catch up!" Jack said.

"Let's go!" Yang said, speeding off.

"Come one MonTrix, don't fail me now!" Jack said as he slams his hand down on the MonTrix as a light blue flash consumes him.

When it subsides, he is now a 50 foot long, snake-like creature with a fin on its head and tail, having sharp teeth in its mouth. It had a lime green body with black and orange spots from its neck to its tail with a black curve spot on its face with the orange connecting to the first spot on its neck. The MonTrix symbol is placed on the third spot at the back.

"Pirahnaconda?" The fish/snake hybrid hissed in surprised and amazement as he looked at his newest form. "Haven't seen these guy since Syfy movies got bad nowadays." He shrugged his nonexistence shoulders as he slithers to join the chase.

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Blake and Sun continued leaping from the roof of one car to another in the middle of the highway. Several cars are honking as the robot leaping down after with Yang and Neptune doing the same.

The Paladin plows through the traffic throwing cars aside, making it harder for Yang, Emma/ Panuncian and Jack/Piranhaconda to keep up.

"Whoa!" Sun yelled as the two Faunus continued to jump from car to car. Meanwhile, Yang is getting allot, but Emma closes in, leaping onto the back of the robot to divert its attention.

"Get off you dumb animal!" Roman yells from inside as Panuncian slashes with her claws and teeth.

Meanwhile, Yang is talking with Neptune! "We need to slow it down!"

Beeping came from inside the compartment, getting Roman's attention. Seeing that Neptune is reaching for his weapon, and the little shit on top is starting to do some damage. He started throwing cars at them to try and make it harder for them to keep up.

"Hold on!" Yang yelled.

"Oh no." Neptune said as Yang began to drive sporadically to avoid the oncoming cars. Suddenly, a predator is sent their way after falling into the Paladins grasp. Emma angled himself in the air narrowly missing Yang and Neptune, his claws digging into the ground. She let out a roar before she evolved into Ultimate Panuncian and charges towards the Paladin once again.

Neptune pulled out his weapon shifting it into gun form, charging a lightning round firing at the robot, causing a small explosion with each shot. Piranhaconda then turns into Rathalos and bombarded the Paladin with fireballs.

Neptune stands up shifting his weapon into its guandao form, leaping of the back of the bike the blade splits apart into a trident his weapon lands into the back of the Paladin.

Sun and Blake stop on a pair of trucks, seeing their friend in distress. "Neptune, hang on!" Sun said. He slams his palms together, creating two golden clones of himself that each charge at the Paladin. Unfortunately, they have no effect.

Sun launches off the truck, drawing his bow staff and is about to slam down, but the robot spun one more time, throwing Neptune into Sun as they fall off to the side.

"Oh, that's gotta hurt!" Rathalos winced.

Blake saw this, but then heard Weiss voice from her scroll. "Blake I'm in position."

Weiss leaps down from the overpass landing in between oncoming traffic. The Paladin barreling towards her as she is readying her rapier. Blake leaps off the highway, just as Weiss slams her rapier down creating a sheet of ice, causing the Paladin to slip and tumble off the edge of the barrier.

The robot lands and Ruby is waiting for it, the rest of team RWBY land ready for a fight while Ultimate Panuncian and Rathalos landed next to them before turning into Hypnotick and Lucent Nargacuga.

"What the hell is this thing made of?" Hypnotick said.

The Paladin began to close in on them. "We gotta blind it!" Lucent Nargacuga said. Ruby nodded.

"Freezerburn!" Ruby yelled. She and Blake dispersed with Hypnotick and Lucent Nargacuga turning invisible, Weiss slams her rapier into the ground creating a sheet of ice. Yang leaps into the air bringing her Ember Celica, down creating a thick smokescreen.

Roman activates the Paladins lasers to assist with its vision but had little effect. He can only hear the buzzings and roars of Hypnotick and Lucent Nargacuga, but they seemed to be everywhere.

The robot tries firing at a passing Yang, but misses. Finally the laser spots yang and Blake firing at the two who dodge, but from the explosion, comes Ruby slicing the front of the robot.

"Take this!" Lucent Nargacuga said, firing poisonous spikes from its tail and launch several of them towards the Paladin, damaging one of the cameras.

Ruby pulled back the slide on her weapon. "Checkmate!" She called out. Weiss and Blake charged forward delivering a flurry of blows to the robot's feet. Weiss jumps up and stabs one of its sensors, causing it to go haywire. Weiss then uses a white glyph to hop away from the robot.

The robot raised its foot to crush Blake, but Weiss uses a glyph to send Blake backwards, narrowly avoiding being crushed. The paladin then fired a barrage of missiles Weiss uses her glyphs to help doge the missiles.

The Paladin fires a few shots at Weiss who blocked it with her rapier, yet she is still sent flying. She sent another glyph towards Blake the gears in the center began to turn causing Blake's body to glow, the robot unleashed another barrage at Blake. She swings Gambol shroud and its sheath, with each swing a rocket was cut in half gaining speed over time she strikes a pose, as multiple explosions go off to her side.

Ruby with her Crescent Rose ran in. "Ladybug!" She yelled. Ruby shoots herself forward and cuts at the robot's legs, then turns as Blake aims herself at the giant's feet as well. They both dash forward and attack at the same time, circling each other around the Paladin with each strike until they both launch themselves into the air and come down together on the shoulder, cutting off the left arm entirely.  

Yang and Lucent Nargacuga nodded at one another. Both charging forward, Yang leaps onto the robot while Lucent Nargacuga focuses on the legs, slamming it with his spiked tail. The robot grabs him by the tail and throwing him into Yang, the two slam into a pillar before the Paladin punches them through it.

The two of them role across the ground, a light blue flash engulfs Lucent Nargacuga, reverting to his human form. Yang turns her head to see him try and push himself up, only for the robot to come in and kicks him into the air before slamming him back into the pavement with its one arm.

"And stay down!" Roman said, cracking a grin.

"NO!" Hypnotick cried out in fear as she turns back as Emma.

"Jack." Blake said in slight fear for her friend.

Jack pushes himself up with blood dripping down his mouth. He glared at Torchwick with anger and determination. "You have a big robot? So what?" He wipes the blood off his mouth and grins. "I have fought tougher and stronger than you." He fiddles with his MonTrix and selects his desired form. "As Ben would say: IT'S HERO TIME!" He slams down on the symbol.

"ULTIMATE RAJANG!" The Evolved Fanged Beast bellows as his upper black fur and arms turn cyan blue. His equally cyan blue eyes glared at the Paladin.

"We might want to take cover." Emma said.

The Paladin cocked its right arms as Roman throws a punch to Jack, who effortlessly caught it with left arm before blue electricity radiates from Ultimate Rajang's arm and shocks Roman within the giant robot. He screams in pain as Ultimate Rajang growls dangerously at him at him.

"Man in machine strong, but Ultimate Rajang is the strongest there is!" Ultimate Rajang shouted. (1)

Ultimate Rajang cocks his right arm back, with electricity coursing through it before punching the Paladin down. he then jumps and spins backwards before spitting a powerful thunder ball that struck it again. But before Roman could get up, the Evolved Fanged Beasts attacks again as he punches the robot with his fists really hard.

Ultimate Rajang then does a double backflip and lands before firing a very powerful blue energy beam from his mouth. The attack tore through the robot as Roman Torchwick amanges to get out.

"Just got that thing cleaned!" He complained, wiping the dust off himself. He then sees Ultimate Rajang turning back to Jack, exhausted. Team RWBY and Emma catches up to Jack as Yang fires a round from ember Celica. However, a pink and brown haired girl with a pink umbrella blocked the attack.

"Ladies, Beast boy and girl....." Roman addressed. "Ice Queen....."

"Hey!" Weiss shouted.

"Always a pleasure! Neo, if you would....." She did a small bow. Yang isn't having it and charges and throws a punch. However, Roman and Neo shatter like literal glass. Jack, Emma and RWB joined her side just in time to see them escaping from a Bullhead.

"Welp. They've escaped." Jack said, then looked at his MonTrix, which had a pink hourglass instead of the usual light blue. "And I need time to recharge."

"So do I." Emma said as her Nemetrix is beeping, indicating it was recharging.

"So I guess he got a new henchman....." Yang said.

"Yeah," Weiss said. "Yeah, I guess she really made our plans... fall apart?"

Ruby giggles as Weiss smiled. But Jack shook his head with Blake and Emma walking away. "No. Just..... no." Yang deadpans.

"Wha- But you do it!" Weiss said.

"There's a time and place for jokes." Yang states.

"Was this not it?" Weiss asked.

"No, it just wasn't very good." Yang said, following Blake and Emma.

"Ben would've made better puns. Sorry." Jack shrugged before following the three.

"Well at least I'm trying." Weiss huffed in annoyance as she followed her teammates.

"Wait, where are Sun and Neptune?" Ruby asked.

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A Simple Wok Noodle House  

"They're probably fine, right?" Neptune asked.

"Probably." Sun said

With his question answered, Neptune turns back to his noodles and the two eat in silence.

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1. Yes. I made Ultimate Rajang have the Hulk's personality.