Mewtwo is a fictional creature known as a Pokémon from Nintendo and Game Freak. Created by Ken Sugimori, it debuted in the video games Pokémon Red and Green, and later appeared in subsequent sequels and spin-off titles, such as Pokken Tournament. In the video games, the player can fight and capture Mewtwo in order to subsequently pit it against other Pokémon. The player first learns of Mewtwo late in Pokémon Red and Blue by reading research documents left in a ruined laboratory on Cinnabar Island. Mewtwo is regarded as one of the series' strongest Pokémon. Mewtwo has also appeared in various animated adaptations of the franchise.