Suddenly, the Doctor's memories flew through Ash's head. He saw that Doctor man from a minute ago in a trench coat. He saw a man with shortly cropped hair in a leather jacket. He saw the TARDIS interior, a blonde girl with glowing eyes, a metal dog, and so much more!
"You are an alien!" said Ash. "You wound up here because your 'bigger on the inside' ship was out of control!"
"Yes, Ash. That's what happened." said the Doctor.
"You killed your own species in the last great time war!" said Ash. "That happened too!"
The doctor frowned for a moment. "Yes," he sadly said. "I know I did."
Ash spoke again. "Your name is the Doctor because you travel through time and space saving people! But your real name… is really hard to pronounce."
"But the TARDIS sent me here for some reason," said the Doctor. "I just don't know what."
"You're Celebi, the time travel pokemon!" Ash said. He pulled a small computer out of his pocket.
"No data found." said the computer.
"But my pokedex doesn't seem to think so." said Ash.
"Okay, I'm just going to pretend I know what a pokedex is, and say I probably haven't been discovered yet. But what I do know, is that I've got to find out why I'm here." The Doctor thought for a second. "Aha!" he said. "Ash, what were you going to do before I wound up here?"
"Well, I was gonna go have a gym battle," Ash said. "but then you showed up, and I challenged you."
"What's a gym battle?" the Doctor asked.
"It's a battle with a really strong trainer called a gym leader, at a place called a pokemon gym." Ash said. "If you win, you get a gym badge, and if you get all eight badges, you get to compete in the pokemon league, and if you win that, you become the pokemon champion!"
"Okay, let's go to the pokemon gym, then!" the Doctor said. "It sounds like an adventure!"
"You got it, Doctor!" Ash replied.
"Geronimo!" the Doctor shouted as he smiled and began to flutter behind Ash. Then, he crashed into a tree.
"Okay," the Doctor said on the ground. "Flying. Got to get the hang of that."