This Ben 10/Pokemon crossover will be spanning all regions from Kanto to the upcoming Alola Region. Just like my other Ben 10 crossover story, this will be harem consisting of the various female companions from the anime so Misty, May, Dawn, Iris, Serena, and the next companion. I'm going to separate the stories into the various regions because reading the story may be more manageable and sometimes pokemon fans don't enjoy a certain reason and will like to skip it. I am an example that I don't particularly like the Johto Region.

I will be combining aspects from the anime and game. It will mostly consist of the game however the female companions' goals are more in tuned with the anime.

Since this story will span all of the regions-yes, this will be the long-con and the romance aspect will be slow building.

X

X

The International Police or Global Police is the law enforcement agency dealing with the most dangerous investigations. Normally, their investigations deal with single individuals; large organizations were rare until recently. A criminal organization named Team Rocket is at large in the Kanto Region, and they need the right person for the job.

"Greetings old friend." Investigator Looker was as surprised as all the other officers in their meeting room at the opened portal right in the center until he heard a familiar voice.

"Professor Paradox, it's been awhile." The investigator and professor shook hands and laughed. All the other officers were dumbfounded by the investigator's friendly attitude with the mysterious stranger.

"I see you have a tough job ahead of you." Paradox looked at their monitors showcasing men and women all donning a similar black uniform with the letter "R" on the center.

"I'm afraid so. I don't believe this issue will be solved anytime soon."

"Would you like some assistance?" Looker gazed at the professor thinking it meant he himself with be involved in the mission however the professor had other plans.

"You can come out Tennyson." Just on command, the alien hero, Ben Tennyson arrived on the scene rather gracelessly; he came out the portal tumbling forward hitting his head on the table's leg.

"Augh! Professor Paradox, you should've warned me of that sudden exit." Ben realized after he finished his complaint that his voice wasn't the same. He took a closer look at his attire and noticed he wasn't wearing his black shirt, green jacket, and blue jeans. He recognized his white and black striped shirt, and green cargo pants.

"Ahh! Paradox! Why I am a 10-year old again!?" Ben started panicking taking a closer look at his appearance from the monitor's reflection.

"Pokemon trainers in the Kanto Region can start their journey when they turn 10-years old."

"Pokemon? Kanto?" The alien hero saw a similar-looking world, but the strange new terms baffled him.

"This world, my young boy, is inhabitant by humans and these creatures called pokemon. They co-exist in peace and even work alongside each other as trainer and pokemon battling to improve themselves."

Paradox moved toward one of the control panels grabbing one of the pokeballs and letting the pokemon out. Ben was treated to a spectacle; it was flying magnet pokemon, eyeing the young Ben, called Magnemite.

"Whoa! That is super cool!" Ben was examining the pokemon from all angles and even swiping his arms under the flying pokemon confirming it was levitating.

"Ahh professor…you sure it a wise choice bringing a child to help in police affairs." Looker wasn't impressed with Ben's first impression questioning his old friend on the matter.

"Nonsense old friend, looks could be very deceiving. He is simply reconnecting with his younger youth. He will prove to be a valuable resource to your organization."

Ben walked up to them interrupting their conversation. "So Professor Paradox, what is the reason for taking me with you?"

"Right young Ben Tennyson, you see this police organization needs a hero to stop the criminal organizations that are plaguing them, and I recommend you for the job."

"Sweet!" Ben thinking of the mission had a revelation. "Wait professor, if these criminals have been plaguing their forces, how will I find them?"

"Excellent question Benjamin, you will go on a journey as a pokemon trainer and as you become a stronger trainer and famous, you will attract the attention of the organizations. Now all you need is the right team to create the pathway to your success. May I please see your Omnitrix?"

Ben removed the watch and placed it with Paradox. Suddenly, the watch levitated and surround itself with an emerald light almost blinding every personal in the meeting room.

"Professor Paradox, what's happening here!?" The professor looked at the spectacle in front of him worried-free.

"Don't worry, this is part of the plan." The Omnitrix shattered and what came from the debris was six spheres with black and green color scheme along with the Omnitrix logo in the front of the spheres.

"I token the liberty of creating six pokeballs each with a specific alien from the watch. I have a feeling you will like your new…pokemon."

The pokeballs opened revealing six familiar aliens: Big Chill, Swampfire, Ripjaws, Astrodactyl, Four Arms, and Feedback.

Paradox continued stating each of these aliens were modified for this world, and now have pokemon typing, abilities, and move sets.

Big Chill is an Ice/Ghost type, Swampfire is a Fire/Grass type, Ripjaws is a Water type, Astrodactyl is a Flying type, Four Arms is a Fighting type, and Feedback is an Electric type.

Ben hearing all these typing's being thrown around by the professor was starting to hurt his head because he didn't give a clear explanation about the typing concept.

The shocked faces of the police personal had a hilarious contrast with Ben Tennyson's amazement.

The professor ended the lecture by saying each pokemon have four moves in their move set and there can't be more than four; if you want to learn a new move, one of those old moves need to be forgotten.

"How would I know their move sets in the first place?" Ben was finally able to get a word out which the professor motioned with his finger saying not to worry. He reached inside his coat pocket to give the young hero something for his journey however something else fell outside as well.

Ben seeing the fallen object picked it up noticing it was a small circle tile with a picture of a white flower. "Professor, what is this?"

Paradox seeing what Ben had in his hand grabbed it from him. "It's nothing, young Ben Tennyson, it's an old trinket from my past." He placed it back into his inner pockets and retrieved a device with the same color scheme as the pokeballs.

"This is a Pokedex. It will help you catalogue your encounters with the pokemon as well finding out the move set of your pokemon."

Ben activated the pokedex and placed it in sight of Swampfire.

"Pokemon move set: Flamethrower, Grass Knot, Fire Punch, and Frenzy Plant."

"Oh that is a good one." Paradox commentated on the move set and looked at his pocket watch realizing it was time for him to leave. "Goodbye old friend, I do know I will be seeing you soon but for now ta-ta!"

Looker finally composed himself after that whole scene. "Hmph! Very well. Ben Tennyson, you are an official deputy of the International Police. Congratulations. You will be flown to the Kanto Region to begin your mission."

Looker handed him a police ID completed with a badge as Ben was muttering how cool it was.

"Ok team! Let's show everyone who will be the best pokemon trainer in the world, and the greatest hero!" The aliens/pokemon roared with the same confidence as their trainer ready for their journey.

"Sirs and Ma'ams! Our spy from the International Police has relayed some important information." The high-ranking officer who looked more like a grunt in the sight of his audience all sitting around a circular table.

"What does our mole have that could pose a threat by those jokesters!" One of the gentlemen spoke in a cocky attitude toward his colleagues.

"You shouldn't take their roles lightly. Underestimating our adversaries will be at our peril." An older sounding gentleman retorted his cocky attitude.

"What does our scout have to say about the police force." This time the voice came from a young woman addressing the officer.

"They have requested the assistance of a ten-year old boy named Ben Tennyson to help in their investigation."

The entire table was silent at the news. Out of the fifteen, about five were giggling and laughing, another three were lost in their thoughts, and the others chose to stay silent.

The same young woman took charge of the discussion. "They requested assistance from a child. Is there anything unique about the young boy?"

"Yes actually, he appears to be in possession of some strange pokemons. I did some background checks and none of them appeared in any region's database.

"Then we should steal his pokemon if they are so valuable!" The same cocky man didn't know when to shut up if the woman's expression had anything to go by.

This time another male colleague broker in the conversation. "Isn't our objective to stay incognito? I highly doubt his pokemon could change our plans."

"Where is the child heading?"

"International Police will be transporting him to the Kanto Region."

"Hmm… he can be a valuable asset in taking down Team Rocket so we don't have to dirty our hands." The woman said her thoughts while fixing her glasses. The woman's mischievous grin spread to the other board members as they laughed for the unintentional gift the police have gave them.

X

X

I decided to make Ben's aliens into Pokemons so I hope you enjoy that concept. Some pokemon will be switching out as he travels to region to region, but I will like to keep certain aliens as much as possible like Swampfire; I really like that alien.

Ben's pokemon don't have evolutionary forms so their base form can be seen as their final evolution. Their powers may seem OP in the beginning, but they will start to even out as he continues his journey throughout the region.

Remember when I mention the long-con, Ben right now is age 10 meaning he will age one year each region.