Mewtwo

Mewtwo (ミュウツー Mewtwo) is a -type Pokémon and is a Legendary Pokémon. Giovanni Team Rocket hired scientists from Cinnabar Island to create it. He is a mini-boss in Pokemon Ranger: Tracks of Light. Right after that, he will gain awful levels of power, forcing you to fight him as a final boss. Here, he sealed himself in a form called Armored Mewtwo.

Appearance
Mewtwo is based loosely off of Mew with feline features. Its body is purple and it has three fingers on each hand. It is obtainable in Pokemon Red, Blue, Green, FireRed, LeafGreen, HeartGold, and SoulSilver at level 70. Super Mewtwo has a faint purple Aura emerging from him.

Special Abilities
psybeam

In Anime
Mewtwo's anime debut was in Battle of the Badge! where Giovanni used it against Gary.

Mewtwo again appeared in It's Mr. Mime Time briefly.

Mewtwo also appeared in Showdown at the Poké-Corral! where it escaped from Giovanni's gym, as seen in the movie.

Mewtwo has been the focus of a few movies, being the main Pokémon in Mewtwo Strikes Back and in Mastermind of Mirage Pokémon, under the control of Dr. Yung. Mewtwo was also the star of the movie Mewtwo Returns.

In Game
Mewtwo appears in many of the games that aren't made directly by the creators of Pokémon themselves, like Super Smash Bros. Melee. It also seems to be one of the most famous Pokémon, appearing in every game and almost every side-game to the Pokémon franchise.

Trivia

 * Although it is a clone of Mew, it comes before Mew in the Pokédex.
 * Mewtwo was created from one of Mew's cells.
 * Mewtwo is the only Pokémon thus far to be created as a result of cloning, but not the only one to be created scientifically. The only other Pokémon to be created scientifically are Castform, Porygon, Porygon2, and Porygon Z.
 * Mewtwo is the only legendary Pokemon that can be caught in the exact same place in every generation.
 * Mew and Mewtwo's character designs were based on Giegue/Giygas/Gyiyg(Specifically his form in Mother 1), the most frequent final boss and major antagonist of the Earthbound series, of which Ninten, Ness and Lucas are the protagonists, appearing since Mother 1.
 * Mewtwo originally had the highest base stat total, being 680. It was joined by other legendaries after generation 1, and finally surpassed by Arceus in generation 4.

Origins
Mewtwo's name comes from the word 'Mew', which is like a cat meowing, and 'two' because it's a clone of Mew. It is based on a DNA scientific cat.