Mewtwo is identified as the “Genetic Pokémon.”
Mewtwo is a Psychic-type Legendary Pokémon first introduced in Pokémon Red and Blue. In the games, research documents in a ruined laboratory on Cinnabar Island describe its creation through genetic experimentation connected to Mew.
The character became even more prominent through Pokémon: The First Movie, where Mewtwo is portrayed as an artificially created Pokémon who struggles with questions of identity, purpose, and whether origins determine worth. That film made Mewtwo one of the most recognizable figures in the franchise.
Mew is the genetic figure associated with Mewtwo's origin, but Mew's category is “New Species Pokémon,” not “Genetic Pokémon.” Genesect is also connected to genetic modification in its backstory, yet its official category is different. The exact classification therefore points specifically to Mewtwo.