Year 2009-
The group of scientists moved around the rebuilt, reinforced laboratory that had been created to hold their escaped subject so that they could finish their work on it. "A hybrid..." One guy said in awe as he looked over the files of data on his computer screen from almost six years ago when the experiment first began. When they had first set out to do their job for the organization, none of them had ever dreamed that a human-pokemon hybrid was even possible.
To them it had simply been a very far away dream. A dream to help humanity to bridge the gap between the two species.
And after many cases of trial and error- they had finally come up with a suitable human that could sync up with pokemon DNA. And after some real doing from their agents in the field, had managed to obtain said person and his pokemon for the experiment.
At the time the person had been thirteen year old, Ash Ketchum from Pallet town who at the time with his pokemon partner Picachu- had both been excellent test subjects. After which they had imprisoned, and run experiments on the boy and pokemon that had bordered on inhumane and torturous.
But the end result had been everything that they had believed it would be and more.
The Picachu had gained the ability to change it's shape in times of great duress and distress, it's body taking on the shape and form of a teenage human with a few noticeable traits from it's pokemon form. Like sharp little canine teeth that it could still use to chew through things like electrical wire, as well as greater physical strength and a keen sense of smell- For even after spending a day of having tests run on it; the blasted creature always knew when it's trainer was nearby and would ram itself into the steel doors of it's room/cage just to try and reach the boy.
And the boy- The boy had been resistant enough at first. He had done so much to put an end to their work using him that he had even tried to kill himself a few times. Some part of him knowing that if he couldn't save his partner then he would likely never be able to save himself. And he'd been right of course. In the course of the year that the organization had had him and his pokemon, Ash had been through so many physical, mental and psychological changes that he would never be the same again.
They had had to almost completely rewrite his genetic code just to get what they had wanted from the experiment. And as a result, Ash Ketchum, thirteen year old boy- had become Ash- the thirteen year old girl. Which in itself wasn't all that bad once you got past the weirdness of having a boy slowly changed into a female. After all, regardless of what outsiders may think, Ash had been a very charming young lady.
The only problem...had been that the boy had synchronized a little too well with the DNA of a legendary pokemon with very strong psychic abilities, which had later allowed him to somehow escape the lab, taking with him his pokemon partner- Pikachu.