Crowley, a central character in Good Omens by Neil Gaiman and Terry Pratchett, is a charming and sarcastic demon who once took the form of the serpent in the Garden of Eden. Officially named Crawly at the time, he has since evolved into a suave, sunglasses-wearing figure who enjoys the comforts of modern life, including fast cars and good music. Though a demon, Crowley is not entirely evil—he is more apathetic about Hell’s agenda than dedicated to it, often displaying a surprising capacity for kindness and loyalty.

His partnership with Aziraphale, an angel with whom he has shared a centuries-long, clandestine friendship, forms the emotional core of the story. The two have a mutual agreement to occasionally "cancel each other out," allowing them to enjoy life on Earth while maintaining their respective celestial and infernal cover. Crowley’s devil-may-care attitude and quick wit are balanced by his growing discomfort with the inefficiencies of both Heaven and Hell, as he navigates their rigid bureaucracies while working to avert the apocalypse. Ultimately, Crowley’s defining characteristic is his deep affection for humanity and Earth, which he values far more than the cosmic battle between good and evil.