Mohn is a character appearing in Pokémon anime.
When Mohn was a young man, he moved to Alola to do his research on Ultra Wormholes. He took his time to used to battle Hala's Hariyama using his Zoroark. Hala was impressed with Mohn's brilliant tactics in that battle. Recognizing Mohn as a great trainer, Hala gave him a Z-Ring. Mohn was a very passionate trainer, who would often train for a very long time to prepare himself for the battle. It was why he nearly missed his wedding ceremony with Lusamine.
One day, Mohn passed by an antique store, and found an inactive Magearna at an antique store. Thinking it was made by scientists to protect a princess of a far-away land, Mohn thought of his little princess, baby Lillie, and took Magearna with him, but was unable to activate it. Still, he took notes of Magearna, and drew pictures of how it could play with Lillie.
When he was young, Gladion was pet on his head by Mohn. Gladion remembered this as his sole memory of his father, who cared about his family, as he kept a photo frame of his family in the secret room in the mansion. In fact, Mohn thanked Gladion for informing Lusamine his mother that their little baby princess, Lillie, was crying. Gladion was happy for the compliment, while Lusamine and Mohn comforted Lillie, cheering her up. Mohn also lifted Gladion up to see Lillie smiling, to remember the moment as the time they were a united family, with their Pokémon Eevee and Zoroark.
Mohn also led the research team in Aether Foundation, consisting of his wife, Lusamine, as well as Wicke and Faba. One day, however, while studying Ultra Wormholes, Mohn was pulled into the Ultra Wormhole. Faba and Wicke held Lusamine back to prevent more casualties, and Mohn was believed to have passed away in that incident.
Pokémon the Series: Sun & Moon
Tapu Fini, who could contact the spirits of those passed away, did not summon Mohn, and Gladion was told that his father was actually alive. Thus, he went to Aether Paradise, where he shared the good news with his mother. When Gladion sent Mohn's Zoroark, he called upon his father's strength to guide him in this battle.