Mew

Mew is a legendary Pokemon. It is said to be the most powerful Pokemon to ever existed. Mewtwo was cloned from Mew.

Trivia

 * Mew will meet Jaden in Jaden's Adventures of Pokemon the First Movie.
 * Mew will meet Jeffrey and his team in Jeffrey & Friends' Adventures of Pokemon the First Movie. It'll be revealed at the end that Mew joined Jeffrey's team for future adventures.