Mewtwo

Mewtwo is a legendary pokémon that was created by Team Rocket using DNA from an eyelash of Mew. Originally, Mewtwo was outraged and unsure of the meaning of his existence, until Mew was able to help him, through battle, find his will to live and coexist peacefully. He was created by a large team of Team Rocket scientists, but Professor Moon is considered to be the one who contributed the most to Mewtwo's existence. Before Mewtwo awakened, he was known as Experiment C in the Team Rocket databanks. He is vastly considered to be a failed experiment.

Mewtwo was the second in line to mentor Stun; he is responsible for teaching Stun to use and perfect his hyper beam. Stun and Mewtwo has had a somewhat strained relationship ever since Stun attacked him in a fit of rage after Star had been kidnapped.

Mewtwo was captured approximately forty years prior to Project Stun and used as a powerful defense mechanism for humankind, until the Stun clone managed to free him and they fled to the moon.