As written by Ellis, Bateman is the ultimate stereotype of yuppie greed; wealthy, conceited, and addicted to sex, drugs, and conspicuous consumption. All of his friends look alike to him, to the point that he often confuses one for another; they often confuse him for other people as well.[9] Bateman delights in obsessively detailing virtually every single feature of his upper-class lifestyle, including designer clothes, workout routine, business cards, alcoholic drinks, elaborate high-end stereo and home theatre sound system. He is engaged to an equally wealthy, shallow woman named Evelyn Williams.