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