This artificial Pokémon, constructed more than 500 years ago, can understand human speech but cannot itself speak.
Its mechanized body is merely a vessel. Its true self is its Soul-Heart, an artificial soul.
It synchronizes its consciousness with others to understand their feelings. This faculty makes it useful for taking care of people.
Built roughly 500 years ago by a scientist, the part called the Soul-Heart is the actual life-form.
— Pokédex entries (via PokeAPI)