Mewtwo is a powerful and genetically engineered Pokémon from the Pocket Monsters series, also known as Pokémon. Created by scientists using the DNA of the legendary Pokémon Mew, Mewtwo is known for its immense psychic abilities and intelligence. Initially portrayed as a villain due to its feelings of anger and betrayal towards humans, Mewtwo eventually learns about compassion and empathy. It plays a pivotal role in the series, often challenging main characters like Ash Ketchum, and is a central figure in the first Pokémon movie, 'Pokémon: The First Movie - Mewtwo Strikes Back.'