Mewtwo

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Mewtwo in Pokemon Fire Red and Leaf Green.
Mewtwo
Species	Mewtwo
Debut	Pokemon Red and Green

Background

Mewtwo was created through years horrific gene splicing and recombining DNA. He is mostly like Mew, however, it’s taller, more powerful, and has a more limited move set. Despite his power, Mewtwo wasn’t created to be compassionate, whether it was intentional or an unintended side effect is never explained.

Mewtwo was once an embryo in the womb of its mother, Mew. This makes Mew the only Pokémon known to give live birth. Scientists altered its growth during its gestation period, or the Mew was artificially inseminated. Whatever the case, Mewtwo was born in the Pokémon Mansion on Cinnabar Island. Mewtwo is suspected to have killed his creators. It is known that Mewtwo is responsible for the nickname Burnt Mansion. It then fled to Cerulean Cave, and hid in the most distant pit of it.

Mewtwo rarely moves its arms or legs to conserve energy. Though it can’t use every TM and HM, Mewtwo is still a force to be reckoned with, since it is more powerful. Combined with its antisocial behavior make it ruthless.

Trivia

Mewtwo has the distinction of possibly being the only one of a kind Pokémon. Others, like Ho-Oh, Lugia, and Deoxys can be captured in multiple games or make appearances in games multiple times, like Pokémon Colosseum. It’s theoretically possible that there is more than one Mewtwo, since one could trade a Mewtwo from one game to another that already has a Mewtwo. However there has been no in game mention of this, so whatever means Mewtwo would be able to reproduce is never thoroughly explained. (For the record, Mewtwo could be female, asexual, or breed with Dittos to reproduce; however in game Mewtwo lacks gender, and cannot breed with anything.)

In Pokémon Stadium, Mewtwo fights Red using himself. Silver owns a Mewtwo, Lugia, and Ho-Oh in Pokémon Stadium GS. Whether this is the same Mewtwo remains to be seen. They could, indeed, be two different Mewtwos. There is no in game evidence either way.