Aziraphale is a main character in Good Omens, an angel who guards the Eastern Gate of Eden and develops a deep, 6,000-year friendship with the demon Crowley, leading them to team up to prevent the Apocalypse because they've grown to love Earth and its comforts, like rare books and sushi. He is portrayed as intelligent, gentle, and fond of humanity, but also somewhat naive and prone to black-and-white thinking, often clashing with his heavenly superiors.

Crowley is a popular book character, most famously a demon from Neil Gaiman and Terry Pratchett's Good Omens, who is the serpent that tempted Eve and has a long-standing, close friendship with the angel Aziraphale, with whom he tries to prevent the Apocalypse. He is known for his love of his vintage Bentley, his sarcastic humor, and a surprisingly soft spot for humanity, often acting as a non-threatening, morally decent demon who prefers minor inconveniences to major evil.