This is made up of lots of small snippets in achronic order, posted in the order I wrote them - more than one a chapter, to get decent sized chapters.

Enjoy.

1: (First Movie)

Ash ran after the strange black Pokéball that had pulled Pikachu in.

How dare this Mewtwo, whoever he was? He said he didn't want humans to control Pokémon, but then he started catching Pokémon himself!

Panting, Ash watched the 'ball ahead of him drop into a closing tunnel. He threw himself into a forwards skid, aiming to get in before the tunnel closed completely, but failed to make it – his shoes hit the metal with a clack, as it hissed shut.

"Pikachu..." he said, softly.

Then turned.

"I don't care who you are!" Ash said, standing up and facing Mewtwo. "But you've got no right to take our friends!"

"Ash-" Brock began.

Foolish boy, Mewtwo said implacably. I simply captured them – like you captured so many Pokémon.

"I did capture Pokémon!" Ash agreed. "But a lot of them came with me because they wanted to! And you're saying you're so much better, but you're not – you're just as much of a bully as the humans you met!"

I tire of your cheek, Mewtwo informed him, waving his hand. The hammer-blow of psionic force knocked Ash across the room, sending him sprawling, and a charm clinked unnoticed to the floor.

"Ergh..." Ash muttered, shaking his head, then got back up. "You're not going to stop me like that!"

Fool. Mewtwo waved his hand again – and nothing happened at all.

Ash stepped forwards, then jogged, then broke into a run – as Mewtwo's frown deepened, and he began volleying in more powerful psychic attacks.

Just as the first one had, they did nothing at all.

"Ash!" Misty shouted. "Don't – he's far too powerful!"

"I don't care!" Ash retorted. "I have to save Pikachu!"

He swung a punch at Mewtwo, who dodged and countered with reflexive skill. His kick drove into Ash's ribs-

And Ash vanished.

In his place was a small black-and-maroon fox, who bounced on the steps before coming to a rest and pushing his hat out of his eyes.

"What the-" one of the other trainers said.

"Ash?" Brock asked, incredulous. "Is that you?"

"Why wouldn't it-" the Zorua began, then realized something. He glanced back at himself, then over where Mewtwo had knocked him down. "Oh no! I lost it!"

What is-

"What did you lose?" the captured Nurse Joy asked, baffled.

"My mom gave it to me – she said it'd keep my disguise intact!" the Zorua said, loping over. He picked something up, and sighed in relief before transforming back. "Good-"

Why are you a Pokémon? Mewtwo asked, and this time Ash heard him as the charm negated his Type immunity.

"I've always been one," Ash replied, simply enough, and got back to his feet. "Mom taught me to disguise myself, and – well, I really wanted a Pokémon journey. I guess I hoped I could fit in better."

2: (Post-Indigo League)

"Okay, Ash, have you got everything?" Delia asked.

"Yeah, Mom!" Ash nodded firmly. "Everything's ready!"

"Are you sure?" she said, frowning. "It's a long way, the Orange Islands, so even if you're only going for a short time you have to have everything - I won't be able to pop over to give you something you forgot!"

"You didn't have to do that this time," her son mumbled.

"Because we checked everything and I put your charm in your pyjama pocket before you went to see Oak!" Delia reminded him. "If I hadn't done that, you'd have lost your illusion the first day, and then where'd you be?"

"But everyone knows now, and it's fine-"

"You mean your friends know," she corrected, then sighed. "Oh, sorry, Ash - I didn't mean this to turn into an argument. Come here."

Ash came obediently over, and she gave him a hug.

"I do worry about you," she whispered. "But this is the life you want, and I wouldn't take it from you."

Ash hugged her back, mumbling something.

"It's okay," she said. Then stood up, and began ticking things off on her fingers. "Charm?"

"Right here!" Ash said, tapping the enchanted pendant Delia'd had made over a decade ago. She inspected it, hand going unconsciously to its twin at her wrist, then nodded.

"Right. Hat?"

"Never take it off!"

"I know, I had to wash it while you were asleep..."

"Hey!" Ash called, annoyed, and she shook her head with a smile.

"Pokéballs?"

"All ready!"

Delia thought, for a moment, of the matched pair of Pokéballs in a thick-walled safe under the floorboards.

Even with their charms, it was best not to take risks.

"And I'm sure you've got your Pokédex, of course."

Ash blushed. "Uh... be right back!"

As she watched her son scamper upstairs for the computer which was ID, database and all sorts of other things, Delia Ketchum shook her head with a smile.

"Never change, Ash..."

3: (Sometime Johto)

"Gramps! Ash is a Pokémon!"

Oak nodded. "Hm, as I suspected. Gary, pass me that screwdriver, I'm afraid your Pokédex has a few-"

"Why aren't you more surprised by this, Gramps?" Gary asked, blinking. "I mean... wait."

His eyes narrowed. "You knew already, didn't you?"

"Well, I did help his mother move in..." Professor Oak said, shrugging. "Didn't you wonder why he tended to be able to smell where you were hiding when you two were playing together?"

Gary gaped. "Wait - so that really is how he always won? I thought it was a joke! That's why I said-"

He trailed off.

"I guess it's why he didn't age much?"

"Right," Oak confirmed. "Now, if you'll excuse me, we do need to fix this Pokédex of yours. There's a loose wire."

4: (Third Movie)

-Delia started forwards. "Ash, get down from there this second!"

"What did you say, momma?" a girl's voice asked from her side.

Delia was nothing if not an experienced dissembler. She looked across at the girl, sat next to her on a bed, and smiled faintly. "Oh - nothing."

That seemed to satisfy both the Entei who had kidnapped her and the girl he had kidnapped her for.

Thinking back over what had happened while she was Hypnotized, Deila came to a few conclusions.

First - this was not the girl's fault. She'd heard of the Unown, crafters of illusions so real they could conjure a world from the thoughts in a single mind, and knew what they'd do with the contents of a six year old head.

Second - her son was a moron.

Ash was brave, loyal and loving, and dynamic to a fault - and this was the fault. Had he been thinking, instead of reacting, he'd have done this whole thing differently. Leave his pendant with Brock or Misty - they knew, it would be fine - and infiltrate using the abilities of the Zorua he was.

What was the point of being able to take the shape of a Pidgey if you never did?

After a moment, she sighed - quietly.

She'd just have to sort all this out herself.

Slowly, she unfastened the string wrapped around her wrist and lowered her own form-locker to the floor, before pushing it under the bed.

Delia Ketchum was not going to be Hypnotized again.

Ash ran up the last flight of stairs, Pikachu at his heels. "Mom!"

"Ash!" his mother said, standing. "What, exactly, do you think you were doing?"

"But-" Ash stopped, bewildered.

"That's gratitude!" Pikachu said, sounding a bit offended.

"And none of your lip, Pikachu!" she added, sharply. "I-"

Molly stirred on the bed.

"The Unown created this place - and Entei," Ash said, trying to contribute, as Delia moved over to the bed. "Is he here?"

"He left a while ago," Delia said absently. "Molly?"

"Momma?" Molly asked, groggily.

"I'm not your real mother, sweetie," Delia said, trying to let her down gently.

The ground shook.

"Whoa!" Ash said, staggering, as crystal pillars formed out of the floor. They tried to separate him from his mother, but Delia finagled it so they were on the same side as the barrier formed.

Entei phased out of the floor, coat rippling. He glanced over at the still-sleepy Molly, then turned to Ash. "Go. Leave us, or I will make you."

"No way!" Ash said, clenching his fist. "I'm not leaving my Mom!"

"And you'll have to get through me first!" Pikachu added, cheeks sparking.

Delia coughed.

Entei half-turned, frowning, and then Delia hit him with a wave of choking darkness which sent him skidding halfway across the room.

"Mom!?" Ash gaped.

"It's called Night Daze, Ash," Delia informed him, as Entei shook his head.

"Well - yeah, but-"

"What is this?" Entei asked, and let out a roar. "Why?"

Ash's mother gave Molly a gentle push, back towards the bed, and fired another Night Daze.

"Your mom's scary, Ash," Pikachu said, blinking in the afterimages from the Dark-type attack.

Entei, on the other hand, had been caught in both blasts. He shook his head again, and batted irritably at Delia on reflex.

He'd aimed for her torso, but the lingering effects of the Night Daze attacks threw him off. His paw-swipe just clipped Delia's hand, and her illusion - no longer shored up by the pendant - burst.

The sight of the parent he'd obtained for Molly abruptly turning into a five foot kitsune startled even the Unown-construct Entei. He blinked, baffled, and then Delia's clawed foot swept up and hit him somewhere sensitive.

Ash and Pikachu both winced as the Legendary Fire-type collapsed in a pained heap.

"You don't threaten my son," Delia informed him, then reapplied her illusion. "Shall we go?"

"What's going on?" Molly asked.

The tower shook, crystal pillars trembling.

"...oh dear," the disguised Zoroark said, as the trembling increased. "Maybe I'll have to go reason with the Unown personally."

AN:

So, yes. This is an AU where Ash is a Zorua and his mother is a Zoroark.

I'll be posting more of what I've got written so far.

As noted above, this is NOT in chronological order - I wrote it in achronic order and that's the way it's getting posted. Each snippet mentions when it's set.

The form locking pendants, by the way, are magically enchanted. (Magic exists in the Pokémon world.) They're also made of Ring Targets, and as such negate a Dark-type's normal Psychic immunity as otherwise they'd be obvious.