From what I heard, you can't put Ash-Greninja into Ultra Sun/Moon directly from the demo. I'd like to know if there's any other way to get him. I have the Sun/Moon Special Demo as well as Pokémon Bank but not the original Sun/Moon (nor do I desire to). Am I required to have the original Sun/Moon, or is there some other way I can get Ash-Greninja into Ultra?
Any answers would be appreciated, thanks!