Bunter, fictional character, the perfect valet in the Lord Peter Wimsey mysteries of Dorothy L. Sayers. Bunter served bravely as a sergeant under (then Captain) Wimsey during World War I, and he remained in Wimsey’s service after the war. A knowledgeable bibliophile, an expert photographer, and a superb brewer of coffee, Bunter is exquisitely attuned to Wimsey’s tastes and affectations and is an able assistant during investigations.