From Bulbapedia, the community-driven Pokémon encyclopedia.
Jeeves is a recurring character in the Pokémon anime. He was unnamed in the Japanese version. He is Madame Muchmoney's butler.
Jeeves first appeared in Snubbull Snobbery. He was seen serving Madame Muchmoney's Snubbull, but the Normal-type Pokémon rejected him.
He then appeared again in The Trouble with Snubbull. Along with Madame Muchmoney, they were trying to locate Snubbull and bring it back to the mansion. By the time they found it, it had evolved into Granbull. Eventually, Jeeves and Madame convinced Granbull to return.
Jeeves' English name is derived from the character of Reginald Jeeves, one of the main characters in the short stories and novels of P.G. Wodehouse. Both the name "Jeeves" and the character of Jeeves have come to be thought of as the quintessential name and nature of a valet, butler, or chauffeur, and a "Jeeves" is now a generic term in references such as the Oxford English Dictionary.