Mohn watches over Poké Pelago Island and tells the player character what to do. He shows the player character one of the islands and gives them a few Poké Beans to help get started.
It is revealed later by Gladion that he was a professor at Aether Foundation, and was the one who named Cosmog. He wrote research papers on Ultra Beasts and Ultra Wormholes. One day, he mysteriously disappeared through a wormhole, which caused his wife Lusamine to grow insane and try to desperately find him again, which is why she is so interested in Ultra Beasts and Ultra Wormholes.
He stayed away from his family, for his memories were lost.
- Main article: Mohn (Adventures)
- Main article: Mohn (anime)