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

Dedicated to Braedey95 and CorJayNelson

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Opening - Ben 10 Ultimate Alien Theme

https://youtu.be/cxUbzV__dUI

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Two individuals darted through Beacons courtyard, Ruby stumbled as she attempted to keep up with her partner. The heiress seemed somewhat chipper when she saw the aircraft and had come directly to the docks, her leader remaining clueless towards the usual stoic girl's actions.

"Weiss, what is the big deal? Who is it? Who is she?" Ruby called out.

"Winter." Wiess said as Ruby came to stand alongside her, the red-clad girl looked towards the aircraft as a White-haired woman bearing a striking resemblance to her partner stepped off the ramp flanked by two Atlesian Knights.

"Wait... Your sister" "Ruby said.

"Winter!" Weiss called out her sister to turn towards them just in time to see Weiss and Ruby running towards her. "Winter! I'm so happy to see you! Oh," Weiss said upon realizing her actions were less than polite. "Your presence honors us." Weiss said with a small curtsy.

"Beacon... It's been a long time. The air feels... different." Winter commented as she looked at her surroundings.

"I mean it is fall, so, eh, it's probably colder." Ruby replied, her words earned the red-clad reaper a swift punch to the shoulder, causing her to gasp in pain.

Weiss then turned back to face her sibling. " So, what are you doing here?" Weiss asked.

"Classified." Winter responded.

Weiss nodded. "Oh, right. Well, how long will you be staying?" She asked.

"Classified." Winter responded her voice more serious than before.

Weiss gulped "Of course." She said as she nodded and smiled in understanding

An awkward silence followed.

Ruby glanced around in the silence. "Well... this is nice... I think?"

"You're going to love it here! I know you've traveled a lot, but so much of Beacon is different to Atlas! The government and the school are completely separate. Can you believe it"

"I'm more than familiar with this kingdom handles it's... bureaucracy. That's not why I came." Winter replied.

Weiss nodded "Right, I'm sorry." She said.

"Nor did I come to watch my own blood fail so miserably in battle." Winter said.

Weiss seemed puzzled by the statement. "But we won."

"Only a novice would refer to that as a victory, I counted at least three strikes missed." Weiss flinched slightly at her sister's words. "Leave us." Winter said the two androids stepping away as Winter sighed. "How have you been?"

Weiss perked up and replied, "Oh, splendid! Thank you for asking. I'm actually in the very top ranking of our combat class! The rest of my studies are going wonderfully too! I'm-"

Weiss received a slap upside the head leaving a rather large lump. "Silence, you boob! I don't recall asking about your ranking, I asked how you've been. Are you eating properly? Have you taken up any hobbies? Are you making new friends?" Winter cleared out.

"Well, there's  Ruby." Weiss said, indicating to her leader.

Ruby giggled. "Boob." She said pushing the lump down on Weiss' head.

Winter turned her attention to the red-clad reaper. "I see. So, this is the leader you wrote of. How appropriately... underwhelming."

"Uh, thank you." Ruby replied.

"Greeting Ruby Rose. I wish to thank you for taking an interest in my sister."

"Oh! uh..." Ruby tried not really sure how to respond, until Wiess cut in saving her leader some embarrassment.

"Well there's also Jack-"

"Jack?" Winter snapped her head towards her sister and smiled at this revelation. "So, you've taken interest in someone dear sister. Tell me who is this young man, have the two of you been on any dates as of late?"

"What!" Weiss said, trying to stop the heat rushing to her cheeks. "Winter he and I aren't together, he's our friend. Besides he's already in a relationship with another girl named Emma."

"I see," Winter said. "Hmm, a shame."

Having calmed down Weiss looked back up at her sister. "Well, I have business with the general and your headmaster. But seeing as I'm early, why don't you take me to your quarters?" Winter asked her sister.

Weiss smiled. "Really?" She said.

"Yes, I wish to inspect them and make sure they are up to my personal standards." Winter says as she and Weiss go on ahead, leaving Ruby behind.

"Of course." Weiss responded "Just so you're aware, the bunk beds only look unstable."

"Bunk...beds?" Winter questioned.

As the sisters continued walking, a figure approached them from behind decapitating one of the androids and slicing the other in half before kicking the severed head over to them.

"Hey."

The two Schnees turned towards the scene. Winter narrowed her eyes at the grey-haired man from the bar holding the decapitated android. "Yeah, I'm talking to you, Ice Queen." He said throwing away the decapitated android, the others raised their weapons ready to fire.

"Halt!" Winter ordered.

"Excuse me, do you have any idea who you're talking to?" Weiss demanded marching up to the man.

"Shhhhhhh, not you," He said shoving Weiss aside taking a few steps forwards. "You."

"Saw that gaudy ship of yours in town. I guess you're here, too" he said

"I'm standing right before you," Winter replied.

The man squinted. "So it would seem." He replied.

"You realize you just destroyed Atlas military property?" Winter stated as she rested her hand on her sword.

He glanced around. "Oh, I'm sorry. See, I mistook this for some sort of... sentient garbage."

"I don't have time for your immature games, Qrow." Winter replied slowly beginning to lose her patients.

"Wait, you two know each other?" Weiss asked coming to stand beside her sister.

"Geez you Atlas specialist think you're so special, don't you." Qrow stated

"It's in the title." Winter replied.

"Well, you know what you really are? A bunch of sellouts. Just like your boss." Qrow shot back.

"I'm not sure what you think your implying, but I've heard enough" Winter snapped back.

"Oh, I heard too. I heard old Ironwood finally turned his back on Ozpin." Qrow shot back.

Winter narrowed her eye's " If you won't hold your tongue" She hissed " Then I will gladly remove it for you" Winter drew her blade as Qrow smirked

"Alright then. Come take it."

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A large crowd had gathered in the center of the courtyard, Ruby pushed her way through the crowd stopping beside her partner.

"Weiss, what's going on?" Ruby asked looking to the heiress.

"Some crazy guy just started attacking my sister!" Weiss said gesturing to the ongoing fight.

"Oh, no who would do such a thaaaaaaaat is my uncle!" Ruby squealed.

"What!" Weiss yelled.

"Kick her but uncle Qrow! "Ruby cheered having not heard her partner

"Um," Weiss began unsure before rolling with it "Teach him respect Winter!"

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Mercury walked through the area checking out the fight only to freeze when he saw the participants "Uh, oh" He muttered turning mercury bumped into one of the crowd.

He had black spiky hair with tan skin. His clothes are composed of a a red shirt, gray belt, blue jeans and blue shoes. He wears a black trench coat with green and on the inside, and cyan and red flaming patterns on the arms and bottom part. He had obsidian eyes with a red scar over his right eye. He wore a cyan orb watch-like device on his left hand.

"Hmm..." He muttered, he looks at the fight between Weiss and Qrow. Smirking, he exits the crowd and touched his watch. It show a hologram of a bulky rock-like figure. He then slams down on the watch.

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Winter and Qrow parried each other's strikes as winter dodged a two-handed strike, smacking Qrow's cheek with the pommel of her sword, Grinning Qrow's left eye glinted. Winter leaped back with the aid of a glyph as Qrow slammed his sword into the ground.

Winter landed near a lamppost which was quickly destroyed by Qrow's sword. Winter leaped above him dodging his sword before landing on the flat side of the blade kicking him in the face, Winter leaped off the blade landing on a railing close by, the gears began to turn as Qrow's weapon shifted into its magnum form firing at winter. The Schnee jumped onto the side of the pillar connected to the concrete archway using her sword to keep herself on vertical surface.

Qrow rushed forward firing his weapon once again at her, dodging Winter scaled up the pillar leaping onto the archway itself, Qrow quickly followed suit on the opposite structure firing off rounds towards the specialist.

Winter disappeared in a cloud of smoke, Qrow narrowed his eye's scanning for the Atlas specialist. Suddenly Winter burst out of the smoke heading straight towards him separating her saber in two. Qrow brings up his sword blocking the attack. The arch was not so lucky collapsing under the force despite this the two continued their attacks towards each other.

Qrow is force back plunging his sword into the concrete to slow to a stop before holding it in a one-handed stance, the audience cheered at the display. Winter stabbed the ground creating a glyph that summons a small flock of white Nevermore's that quickly began flying towards him. Qrow swings his sword at the flock causing them to burst into smoke. He then swings his blade sending an aura arc towards her causing her to jump to the side putting an end to the birds.

Growling, Winter summons another Glyph behind her while Qrow's swords began to transform. Suddenly the ground between them explodes by a black energy ball, throwing them to the ground. They are then encased in a blue aura as it prevents them from moving.

A black blur descends from above as it reveals itself. It is a black-scaled quadrupedal creature with another extra pair of claws on its wings that resembled a cape which has three red claws. It had an exoskeleton on the inside. It appears mostly to lacking eyes. And had the Montrix symbol placed on its chest.

"I leave for a few hours and there's a fight ongoing." The Black Eclipse Wyvern said in annoyance. "Seriously, can we not have fights like these near public?"

Just then, a another figure revealed himself. It is a bulky humanoid creature with a giant mouth. It had gray rocks with dark blue and light blue skin on its body with a pair of cyan eyes. It also had a hourglass symbol similar to the MonTrix.

Gore Magala and Positive Gravattack looked at each other in shock.

"Zack?" The Black Eclipse Wyvern said.

"Jack?" The Galilean blinked.

"Schnee!" They turns to see Ironwood with several androids and Penny behind him. Positive Gravattack puts them down as she salutes.

What surprised Winter even more is that the two reverts back into their human forms, Jack Andros and Zack Orion.

"What?! How?! What kind of creatures are you?!" She yelled at them.

"They are not your problem!" Ironwood interrupts as he approaches. "What in the world do you think you're doing!" He demanded.

"He started the altercation, Sir!" Winter quickly replied.

Qrow leaned back with his hands behind his head "That's actually not true, she attacked first" Qrow pointed out.

"I can testify to that" Emma said, walking next to Jack.

Ironwood narrowed his eyes as Winter started to get nervous. "Is that right? "Ironwood asked. Winter attempted to find the right words, but realized Qrow was right and looked down in shame.

"And you," Ironwood said looking to Qrow, who simply pointed at himself in a mocking manner. "What are you doing here?"

"I could be asking you the same thing?" Qrow said mockingly.

"Now, now everyone..."

Everyone turns to see Ozpin and Glynda arriving at the scene "There is a sanctioned fight happening just around the corner at the Colosseum, that I can assure you has better seats. And popcorn."

"Break it up, everyone! We will take care of this mess." Glynda said as she turned her gaze towards Ironwood.

As Ironwood Winter and Penny take their leave, Penny looks back to Ruby waving goodbye, Ruby returns the gesture.

"Uncle Qrow!" Ruby cried leaping onto Qrow's arm. "Hi." She said.

Ah, it's so good to see you! did you miss me? did you miss me?!"

Qrow raises his arm while Ruby hangs from it shaking her legs in joy "It's so good to see you did you miss me? did you miss me?!" She cried.

"Nope!" He replied jokingly ruffling the young reaper's hair.

"Qrow." Ozpin called out. "A word please."

"Heh," Qrow muttered setting Ruby down. "I think I'm in trouble. Catch you later kid." Qrow said. giving Ruby a fist bump.

"Ruby, your uncle's insane." Jack said.

"I have to agree." Weiss said.

"Heh, you two are just mad he kicked butt." Ruby said with a triumphant smirk.

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"How dare they!" Emma yelled in disbelief and anger. Zack tells his story about how he got here in the first place.

Jack looks at his ally in sympathy and puts a hand on his shoulder. "I'm sorry, Zack. I know how you feel." He said.

Zack looks at him and smiled. "Thanks, man I appreciate it." He said.

"Hey guys!" The three turn to see RWBY joining them. Zack's eyes widened as his eyes  fell on Yang.

"So mind telling us who you're new friend is?" Ruby asked. Zack immediately got in front of Yang and held her hand.

"Zack Masayoshi Orion at your service." Zack introduced, kissing Yang's hand and causing her to giggle.

"Easy there tiger." Jack pulled him back by the collar, much to his friend's displeasure.

It wasn't everyday you see a hot blonde chick. Why Jack? Just..... Why?

"He's certainly a good one." Yang giggled. Zack looks at her and smiled.

"ANYWAYS," Jack interrupted them. "If you two lovebirds done flirting, I would need to search for more information."

"Again?" Emma looked at her boyfriend in disbelief. "After you just got back?"

"You're starting to become a male Blake." Yang said. Blake glares at her partner with pink cheeks.

Zack, on the other hand, just sighed. "Again with the whole 'saving innocents and finding enemy info first, relax later'. Loo I know-"

"It's different," Jack said with a serious face. "While I was investigating at one of the villages, I've encountered Bagan and Queen Ghidorah."

RWBY and Emma looked confused at the name while Zack looks at him in shock and horror.

"Are you sure it's them?" Zack said sternly.

Jack nodded and recalled how he met the Kaijus again.

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Flashback.....

Jack, as Gore Magala, flew through the air as he went to another village. So far, he had little to no information about the ones behind the Breach and Albedo's location. He sighed. The sooner he'd find and arrest them, the sooner, he and Emma could get home.

However, as he was gliding, 'he sees' (Remember, Gore Magalas lacked eyes)  the village he was looking burning. Shock was replaced by fury and determination as he flew down.

When he lands, he turns into Great Jaggi and begins sniffing for survivors. He only managed to find one, buy he was dying. He turns back as Jack as he held the dying man.

"Sir, what happened?!" Jack said.

"T-They came and took u-us by surprise...." He said, coughing up blood.

"Who sir?! Who're "They"?!" Jack shouted.

The man raised his hand and pointed behind. "Them....." He then drops his hand and passed away.

And it wasn't until two looming shadows behind did he turn around. "No way." Jacksaid in shock and fear.

For it was Bagan and Queen Ghidorah standing over him.

"Hello Andros," Bagan smirked. "Have you missed us?"

Jack grits his teeth as he turns turn into Seregios and flew away from them as possible. He couldn't face them by himself. He needed back up, NOW!

"Don't leave yet!" Queen Ghidorah cackled. "We're just getting the party started!" Her right head fired an energy beam straight for Seregios and hit its mark.

"AAUUGH!" The Thousand Blade Wyvern screeched in pain as he free falls and crashes down hard. Seregios groaned in pain as he turns back as Jack. Shaking his head, Jack shakily stood on his legs as the two ancient Kaijus advanced on him.

"Aaaawww, what's wrong?" Queen Ghidorah mocked. "Scared to fight us without Tennyson or even mommy holding your hand?" She and Bagan began laughing again.

Fire burned through Jack's eyes as he slams on the MonTrix and turns Akantor. Too angry to even shout his name, the Supremacy Wyvern slams the MonTrix symbol again, this time causing four diagonal spikes to appear as he went Ultimate.

He grew until he is now 90 meters tall and 110 meters, though still not as big as them. The spikes on his back became thinner, the tips are now sharper. His front claws also gain sharp spikes. His white underbelly became gray whilst his brown and red body had some violet color mixed. His two large tusk are no covered with magma, dealing infernal damage. However, the most distinctive feature is that it had two large, Rathalos-like wings from the side of its body.

"ULTIMATE AKANTOR!" He bellowed as charged at the two powerful ancient Kaijus.

Flashback ends.....

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"Even with my Ultimate form, I still lost." Jack explained. "I only manage to escaped when the explosion created smoke and used Chameleos to hide myself and retreated here."

Everyone except Zack stood there, shocked. They couldn't believe that someone as powerful as Jack was easily defeated by the likes of the two Kaijus. Emma had tears streaming down her tears as she hugged her boyfriend.

"I'm still here, Emma." He assured, kissing her forehead in an effort to calm her down.

"Man," Yang ran her fingers through her hair. "Sounds like these Bagan and Queen Ghidorah mean serious business."

"It gets worse." Zack deadpanned, causing them except Jack to look at him in shock. "Bagan is entering his metamorphosis stage. And unless we can stop him, Bagan will become too powerful for even me and Jack to handle."

"Look," Jack sighed as he looks up from comforting Emma. "I know you guys wanna stop them now. I know especially that. But the last thing we want to happen is cause a mass panic." At that, everyone remained silent.

"So, what do you suggest we do?" Zack said after a while.

"I think....." Jack replied. "I think I need to keep this information to ourselves, for now."