Mewtwo

Mewtwo (Japanese: ミュウツー Myuutsuu) is a -type Legendary Pokémon introduced in Generation I. Giovanni hired scientists from Cinnabar Island to create it, which they did using Mew's DNA. It is the final boss in Pokemon Ranger: Guardian Signs. Right after that, it gains levels of power, forcing the player to fight it twice. It later rescues Rand from a different dimension. It is the highest level Pokémon to be caught in Pokémon Fire Red and Pokémon Leaf Green, appearing at Level 70 in Cerulean Cave. It ranks 3rd in Pokémon statistics, behind Black/White Kyurem and Arceus. It has 680 base points, behind White/Black Kyurem's 700 and Arceus' 720. It has the highest base S.ATK and S.ATK growth in the game, only being beaten by a Dexoys in Attack mode.

Appearance
Mewtwo is based loosely off of Mew with feline features. Its body is purple and it has three fingers on each hand. Mewtwo has a faint purple Aura emerging from it at full power.Mewtwo was stated as the world's most powerful Pokemon to exist

Special abilities
Mewtwo is highly adept at using its Psychic powers, displaying telekinesis and telepathy as well. It uses it's telepathy to communicate with humans and translate the Pokémon language. It is able to Fly and erase people's memories as seen in Mewtwo Strikes Back.

In the anime
Mewtwo's anime debut was in Battle of the Badge! where Giovanni used it against Gary, who referred to it as an "evil" pokemon. 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 the manga
It was created by Blaine in a laboratory and went on a rampage, almost destroying Cerulean City. When Red heard about "The Monster of Cerulean City", he decided to catch it. After a single encounter with the tornado that was Mewtwo, he met Blaine. Blaine told Red of his condition, how if Mewtwo continued to rampage, both Blaine and it would die. Blaine then continued to show Red his disfigured hand, a mark that he shared with Mewtwo, and concluded his talk with Red, declaring he intended to kill Mewtwo, in order to put it out of its misery, and also to save his own life. Red later encountered Blaine attempting to finish Mewtwo. Red, after stopping Blaine's attempted suicidal killing of Mewtwo, caught it using his whole team, and launching Pika with the Master Ball in its mouth, catching Mewtwo for Blaine. Blaine decided to train and raise Mewtwo as his own. Later, Mewtwo appeared alongside Blaine, battling a child helping them train. Blaine assisted Yellow from then on out, being paired with Yellow by Sabrina's Alakazam. In this setting, we learn that Mewtwo needs to rest in its Poké Ball, and if it was released for too long (over 5 minutes), it would die. It then appeared again in the FireRed and LeafGreen chapter, being loaned to Red by Blaine. It aided the Pokédex holders in stopping 9 Forretress from blowing up Neo Team Rocket's airship with Explosion, and with fighting Deoxys. Since then, it is unknown if Blaine and it died, or if it is back on Cinnabar Island, training with Blaine.

Name 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.

Trivia

 * Although it is a clone of Mew, it comes before Mew in the Pokédex possibly because Mew is a Mythical Pokémon and Mythicals always come last 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.
 * Other Pokémon whose existence is aided by science are Fossil Pokémon and Genesect.
 * Mewtwo is the only Legendary Pokémon that can be caught in exactly the same place in every generation.
 * Mew and Mewtwo's character designs were based on Giygas (his form in Mother), the most frequent final boss and major antagonist of the EarthBound series.
 * Despite what most people think, just because Mew is after Mewtwo in the PokéDex doesn't mean it was discovered first. That would mean Charmander, apparently a rare Pokémon, was discovered before Rattata, a common Pokémon.
 * Mewtwo originally had the highest base stat total, being 680. It was joined by other Legendary Pokémon after Generation 1, but was finally surpassed by Arceus in Generation IV.
 * The title "Mewtwo Strikes Back!" has a small reference to the title of the Japanese version of EarthBound which is "MOTHER 2: Giygas Strikes Back!". However, this may be a more likely reference to Star Wars Episode V: The Empire Strikes Back
 * Mewtwo is compatible with almost every TM.
 * There was a rumor of a Mewthree, but it was revealed that it was just Mewtwo in armour. In Mewtwo Strikes Back, it was revealed that the scientists who created Mewtwo were about to start making Mewthree, but Mewtwo destroyed the lab.
 * Mewtwo is playable in Super Smash Bros. Melee, but didn't appear in the sequel Super Smash Bros. Brawl. Lucario appears in its place.
 * Although there is plenty of data in the game that suggests it was going to be, including a victory image.
 * Although it was created by scientists, it has a shiny form, possibly another creation of scientists.
 * In Generation V, Mewtwo was given a signature move, Psystrike.
 * Team Rocket's Mewtwo's birth date is dated February 6.
 * According to the manga Mewtwo contains human cells from gym leader Blaine.
 * Despite being genderless, Mewtwo's mental voice sounds masculine in the two movies it has been featured in.