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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"It is no longer limited to natural predators." Kyber smiled sinisterly. "See how you do against an Ultimate Panuncian."

Ben (who is Upchuck that the time), Gwen and Kevin, stared in horror as the Ultimate Panuncian advances on them.

"He looks hungry." Upchuck said, backing away with Kevin towards the cage Khyber with Zed and Gwen before he turns back to Ben.

The Ultimate Panuncian roars as he is about to make his kill.

"Hey overgrown kitty kat!" A male voice shouts before a rock is thrown at the predatory alien.

Ben and the others look to the source and sees a ravenette male with blue jacket and black jeans jumping down from a cargo and lands on his feet.

"Jack!" Ben shouts happily.

"What would guys do without me?" The boy teased before looking at the Ultimate Panuncian, his face now serious. "Now time to deal with you." He reveals a blue gauntlet-like on his left arm with a blue and black hourglass symbol; the MonTrix.

"It's hunting time!" Jack shouts as he slaps the MonTrix before he is developed by a blue light. When the light died, it is a wolf-like creature covered in blue scales, gold spikes on its back to its tail, white fur and two gold horns on its head. The hourglass is placed on his chest.

"ZINOGRE!" He let out a fierce howl, showing his dominance. The Ultimate Panuncian flinch due to cats being naturally scared of dogs. But he recovers and roars.

After howling, Zinogre looks at Ben and the others. "Interrogate Khyber about Albedo's location. I'll handle his pet." He said.

Ben nods. "You can count on us to get back Azmuth's brain and Albedo's-"

"Jack look out!" Gwen shouts, before the Ultimate Panuncian tackles the distracted Thunder Wolf Wyvern. He roars before swiping his sharp claws, cutting Zinogre's right cheek.

Zinogre growls in pain before headbutting the alien cat away. Seeing his opponent stunned, he does an breakdance, hitting then Ultimate Panuncian with his tail.

The Ultimate Panuncian shakes his head before roaring in anger. Zinogre narrows his blue eyes. "So you have an Ultimate form? So what?! Two can play at this game!" He states before slapping down into the MonTrix, causing four spikes to appear as he evolves.

His horns and gold spikes grew longer and sharper. He also grew a bit, not as big as the Ultimate Panuncian, but at least until they are at eye-level. His claws sharpen as well while his snout became narrow. Lastly, spikes at the tip of his tail morph into spikes, giving it a fork-like look.

"ULTIMATE ZINOGRE!" The Evolved Fanged Wyvern howls before charging at the Ultimate Panuncian, who did the same, ready to tear the Monster into pieces.

The Ultimate Panuncian and Ultimate Zinogre tackles each other to the ground while bite, clawing and scratching the other one. Eventually, Ultimate Zinogre came out on top before biting down unto Ultimate Panuncian's neck and shaking his head.

Ultimate Panuncian roars in pain as he is tossed around like a ragdoll. Thinking fast, he lashes his tail against Ultimate Zinogre, forcing to let go before pushing him into a intermodal container and gets revenge by biting down hard into his left shoulder.

Ultimate Zinogre howls in pain as he tries to get out, but the Ultimate Panuncian's teeth stick like glue. Growling, he raised his right paw, electrifying it and slam it down to his midsection.

The Ultimate Panuncian roars as he felt his ribs crushed and lets go due to the intense pain. Realizing he is at a disadvantage, eh jumps back just as Ultimate Zinogre recovers before transforming into Tyrannopede.

"Whoa!" Ultimate Zinogre said, eyes wide in shock at Tyrannopede, who now completely towers over him. The Tyrannopede roars before shooting beam of web that traps Ultimate Zinogre in a cocoon. He roars into the air, thinking he had won. However, blue light is seen inside the cocoon, before another creature burst forth from it.

The creature is bipedal with a purple body, had two fists made for crushing with green slime all over and had a blunt horn on its forehead with the same slime. Like Zinogre, the MonTrix symbol is on it chest.

"BRACHYDIOS!" The Crushing Wyvern shouts.

Due to his bigger size, the Tyrannopede charges in full force and slams Brachydios into multiple craters. Not giving his prey time, he bites into his neck and throws his down repeatedly to the ground.

"Chew on this lizard breath!" Brachydios said angrily, smashing his for horn against the side of Tyrannopede's face, covering him in green slime. He also did the same by smashing his fists into various parts of his body before backing away.

"How do you like that?!" Brachydios taunts.

Tyrannopede growls as he charges forward, not even noticing the green slime turning red. He closes in the distance with his mouth open, but the slimes explode, causing him to trip and fall, roaring in pain.

Brachydios slams the symbol on his chest and transforms. In his place is a brown bipedal wyvern with a clubbed tail and a head similar to a Triceratops, except it has two more protruding from its mouth. And has the MonTrix symbol on its chest.

"DIABLOS!" The Horned Wyvern shrieks.

The Tyrannopede changes into a Slamworm and digs underground, hoping to surprise Diablos with a sneak attack. But he shoves his head on the ground and begins to also dig.

Seconds later, a small earthquake is made before Diablos resurfaces with the Slamworm in his horns before slamming him down and smashes him into a pile of craters. Slamworm hisses in anger before firing acid balls from his mouth that hits Diablos' face.

"AAAUUGGHH!!!" Diablos shrieks, shaking his head in an attempt to rid the acid off his face. However, Slamworm, well, slams into the Horned Wyvern and bites down into one of his horns. Diablos shakes his head to try and remove Slamworm. But the predatory alien won't let go.

Seeing he won't let go, Diablos shrieks as he suddenly made a charge into a wall that hits Slamworm instead of his horns. He repeatedly does this until Slamworm falls down and reverts back into a Panuncian, unconscious. Diablos shakes his head before roaring victorious.

After roaring he thrusts his horn between the Nemetrix and The Panuncian before ripping the device in half to ensure he won't transform again.

"And that is how I done." Diablos said before a beeping his heard and he turns back into Jack.

"Now to find Ben and the others....." Jack mutters as he picks up what is still intact of the Nemetrix and placed it on his pocket. However, a portal appears in front of him, much to his surprise. Before he could do anything, the portal sucked him up and everything went black for him.

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A blue portal opens up and a ravenette boy came out of it before the portal closed.

Jack Andros groans in pain as he sat upright and stood up. "This is why I hate unexpected portals- Huh?" He said, looking around.

"An abandoned city? Okay, I'm sure this definitely not on Earth. (takes out a Plumber Badge) Jack Andros to nearby Plumber HQ, anybody read me?" asked Josh through the communicator, waiting for a response. But none came. Which Jack could only think of one thing.

"So that portal did take me to an another universe." sighed Josh as he folds his arms before leaning in an undestroyed pillar. After a few minutes, he decide to head toward any civilization.

"Damn, what could have cause this much destruction in the first place?" Jack mutters, seeing dead rotting bodies from afar.

"Whoa!" He exclaimed, landing on his butt after a violent earthquake is made. More shaking came after it. Before he knew it, something emerged from the ground. It was a huge black Spinosaurus with a white and red mask on its face with red eyes. It has a white sail with white spikes protruding behind the sail to its sail. It is the Gigas Prime; a near unstoppable Elder Grimm.

"What the?!" Jack gasps in shock as the Grimm roars and its sail turns red before firing an intense fire beam. He manages to dodge, but he got swiped by its claw and sent sprawling to the ground. Spitting out blood, Jack snarls as he brought his MonTrix up and a hologram of some monsters appear.

"You may be big, but I have Monsters that could give you a run for your money!" He said before slapping into the symbol, a blue light bigger than his previous forms shine, forcing the Grimm to cover its eyes.

When the light died, Jack is now a huge Monster, rivaling the Gigas Prime in size, that bears a strong resemblance to a Tigrex, but is flightless. He has a pair of green eyes a black, brown yellow and red body with a white underbelly, with two tusks on his mouth with large spikes covering his back and tail. He has the MonTrix symbol on his lower chest.

"AKANTOR!" The Supremacy Wyvern bellows as multiple lava geysers explodes around him. After roaring, he looks at Gigas Prime and growls, prompting the Elder Grimm to do the same.

"Alright you faker. Time get this show on the road!" Akantor said as he sprints towards the Grimm to defeat with the Gigas Prime baring its teeth and charges with its claws out, ready to make the Flying Wyvern its lunch.

Akantor roars as he he shoulder tackles the Gigas Prime, sending the Grimm into already destroyed houses, causing to collapse. Akantor raises his left arm and slaps the Gigas Prime, sending it even further to the ground. The Gigas Prime got up quickly and growls before its spines glows crimson red along with its throat.

Before Akantor could do anything, the Gigas Prime fires a red solar beam that struck the Supremacy Wyvern in the face.

"Urgh!" He grunts as he is pushed back by the attack. Seeing this, Gigas Prime continues to assault him with its beam. Chances it might actually kill Jack in one go.

If it weren't for one thing.

Akantor is a Elder Dragon-Level Monster.

"Sucks to be you!" Just s the Gigas Prime thought it is winning, Akantor suddenly lunges headfirst and tackles the Grimm. The attack was cancelled as it roars in pain before Akantor got its head into his mouth and bites down hard. The sound of neck snapping is heard before the Gigas Prime's body went limp.

The Supremacy Wyvern drops the body as it disintegrates into black ashes. Akantor stood on his back legs as he roars in vitcory, lava geysers exploding around him

"Now that is something." Akantor quipped before a light surrounds him and turns back to Jack. Just then, he heard more growls. He turns and finds several more of that thing looking at him. This time they ever resemble overgrown wolves, bears and a giant scorpion.

.....

.....

.....

.....

"Nope." Jack deadpans, already picking a form to turn into. However, this time, he twists the hourglass symbol, turning it into a vertical position. "I ain't wasting my damn time on you guys." He slams down unto the MonTrix that causes a blue light to surround him as he transforms.

Jack's form is similar to that of Nargacuga, the Swift Wyvern, but his color scheme is entirely different. He has now metallic, azure scales with a gold colored chest. And his steel blades became harder and sharper than before with purple tints around it.

"LUCENT NARGACUGA!" The Moon Swifter Wyvern hisses out before, to the Grimm's surprise, turning invisible. The creatures scatters and tried to search for him, but couldn't pinpoint his exact location.

Unbeknownst to them, Lucent Nargacuga has already taken flight and left the area while being very quiet to the point they couldn't even hear him.

'Now that's out of the way, I should probably look for a city within range, whilst making sure nobody sees me in this form or ANY form at all.' Jack/Lucent Nargacuga said in his mind as he looks on the horizon while flying.

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Opening - Ben 10 Ultimate Alien Theme

https://youtu.be/cxUbzV__dUI

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Monster Data

Ultimate Zinogre

Species: Evolved Fanged Wyvern

Abilities: Agility and power over thunder increases, possesses hawk-like vision

Weaknesses: Now vulnerable to the Dragon Element, charging time decreases