Mewtwo is a Psychic-type Legendary Pokémon that was cloned from the Pokémon Mew. He's unwillingly the Yang of the Pokémon Mew's Yin. Exact opposites in personality, but one that came from the other. That's who Mewtwo is, a forcibly born second Mew. Born for nefarious purposes that ended up backfiring. Mewtwo is an artificial Pokémon. It is a bipedal, humanoid Pokémon with some feline features. It is primarily gray with a long, purple tail. On top of its head are two short, blunt horns, and it has purple eyes. A tube extends from the back of its skull to the top of its spine, bypassing its neck. It has a defined chest and shoulders, which resemble a breastplate. The three digits on each hand and foot have spherical tips. Its tail is thick at the base but thins before ending in a small bulb. Despite the fact this Pokémon World doesn't have living humans, history repeated itself. Mewtwo was created after years of horrific gene splicing and DNA engineering experiments based on Mew.

Hello, I am your friend but it is but to be something more

The Pokemon Black game you got seems a bit off...