Alexander Charles "Oofy" Prosser, the Drones' stout and pimpled tame millionaire in The Knightly Quest of Mervyn, The Luck of the Stiffhams, All's Well with Bingo, Sonny Boy, Uncle Fred in the Springtime, The Word in Season, Freddie, Oofy, and the Beef Trust, The Shadow Passes, Leave It to Algy, The Ordeal of Bingo Little, The Fat of the Land, Ice in the Bedroom, Stiff Upper Lip, Jeeves, Galahad at Blandings. Referred to in Big Money as Oofy Simpson. His father was Prosser's Pep Pills. His uncles include Hildebrand, who has an apoplectic stroke in 1947, and Stanley, who dies of cirrhosis of the liver in 1949. Horace Prosser turns out to be a distant relative, but no uncle. Lives in Bloxham Mansions, Park Lane. Wears sidewhiskers, silk underwear, and shoes by Lobb. Notwithstanding his vast wealth, he is constantly involved in chancy schemes to make more money. Sends strawberries to Clarice Mallaby in The Knightly Quest of Mervyn; gives Pongo Twistleton 100 to 8 that Adolphus Stiffham will never marry Geraldine Spettisbury in The Luck of the Stiffhams (he loses). Barely escapes proposing to a girl in Sonny Boy. Godfather to Algernon Aubrey Little in The Word in Season, where he is entangled with Mabel Murgatroyd. Married in Ice in the Bedroom to Myrtle Shoesmith, whose jewelry he has insured for double its value; still recently married in Galahad at Blandings, where his wife wants to buy a country house.

• The Knightly Quest of Mervyn
• The Luck of the Stiffhams
• All's Well with Bingo
• Sonny Boy
• Uncle Fred in the Springtime
• The Word in Season
• Freddie, Oofy, and the Beef Trust
• The Shadow Passes
• Leave It to Algy
• The Fat of the Land
• Ice in the Bedroom
• Stiff Upper Lip, Jeeves
• Galahad at Blandings