Mr. White is a resident of Arborville, a community in the Johto region, and operates a personal flying boat that serves as a river ferry. He is a well-regarded and helpful individual, known for readily offering his assistance to those in need. When Ash Ketchum, Misty, and Brock arrive in the area, Mr. White provides them with transportation, allowing them to explore the nearby forest. He is also willing to escort people to locations they need to reach, demonstrating a generous and supportive nature. Despite his generally kind demeanor, Mr. White is not afraid to use physical intimidation when necessary; at the climax of the events, he confronts the unmasked Iron-Masked Marauder, cracking his knuckles in a threatening gesture to stand up against the villain. His role in the story is primarily that of a local guide and helper, facilitating the group's journey into the forest where they encounter the mythical Pokémon Celebi and the time-displaced boy Sammy. He also participates in the final stand against the Marauder alongside the elderly Towa and her granddaughter Diana. Mr. White does not undergo significant character development or display any special abilities beyond his skill in piloting his flying boat and his capacity for practical, physical assertiveness when protecting his community.