Pokemon Ultra Sun and Moon Hide Lovely Iwata Reference

Pokemon Ultra Sun and Ultra Moon contain a wonderful tribute to the late Satoru Iwata, who served as the fourth president and CEO of Nintendo, and played an instrumental role in the development of Pokemon Gold and Silver.
As detailed by Serebii.net, when you travel to the Game Freak building in Heahea City and speak to Morimoto with a Pokemon you acquired from one of the Virtual Console games on your team, he will offer a bit of history about that particular generation of Pokemon games