In Pokémon Pokopia, Ditto uses its Transform ability to imitate a human.
Ditto is the game’s central character and begins the story in a world abandoned by humans. By assuming a human form, it can help cultivate the environment and communicate with the Pokémon it encounters. This premise makes Ditto unusually suited to a game about rebuilding communities without a human trainer as the main protagonist.
The story begins after Ditto finds its trainer’s old Pokédex. It then takes on a form based on that human identity and starts helping restore habitats where Pokémon can live again.
Ditto is sometimes confused with Mew or Zorua because those Pokémon can also imitate other creatures in Pokémon stories. However, Pokopia specifically places Ditto at the center and links its human imitation to Transform.