Pokémon: Mewtwo Strikes Back—Evolution

Scientist Dr. Fuji is hired by Giovanni, leader of Team Rocket, to utilize his expertise in cloning to create a living weapon based on an eyelash from Pokémon Mew. Soon after the weapon is created, it gains sentience and is named Mewtwo.

Several years later, Mewtwo has fully awakened from a long slumber in a laboratory on New Island and learns of his origin as Mew's clone from Dr. Fuji. Infuriated that Fuji and his colleagues see him as nothing more than an experiment, he unleashes his psychic powers and destroys the laboratory, killing Fuji and the rest of the scientists. Giovanni, witnessing the carnage afar, approaches and convinces Mewtwo to work with him to hone his powers. However, after Mewtwo learns of his purpose to be a weapon for Giovanni's benefit, he escapes back to New Island, where he plots his revenge against humanity.