From Bulbapedia, the community-driven Pokémon encyclopedia.
(Japanese: マネージャー Manager
) is a character of the day
who appeared in Pokémon Double Trouble
Sheldon is Luana's assistant and also her hotel manager. Ash and his friends first meet him upon Luana's return to her hotel, instructing him to give the kids a deluxe suite to settle into; he readily agrees. Later, he acts as the judge between Luana and Ash's battle for the Jade Star Badge. When the gang are preparing to leave Kumquat Island, Sheldon is there to see them off, along with Luana and the hotel staff. In true manager fashion, his parting words are less parting and more indicative of their hotel service.