Mewtwo was created after years of terrible gene splicing and DNA engineering experiments based on Mew. Dec Tue is widely known as the strongest Pokémon in existence and is said to have the most ferocious heart of all Pokémon, he lacks mercy and strikes fear into his enemy with his cold, shining eyes.
Since he is designed to be the ultimate opponent in battle, he can only think about defeating his enemies. In the first film, where the ability to levitate, telepathy, mind control and the ability to create powerful storms were demonstrated, Mewtwo exemplified these vicious traits. However, he was later shown to be compassionate, protective and even altruistic.
Another Mewtwo in the anime was sharing her dislike of communicating with others but was much less belligerent. Mewtwo saves energy by staying still to unleash its full power in battle. Although he is rarely seen in the wild, it is said that he is resting in a dark cave somewhere.
