Aziraphale is an angel who has lived among humanity for six millennia, developing a deep fondness for Earth and its comforts. He operates a musty antiquarian bookshop in London to house his rare collections rather than to actually sell books. Fastidious and generally well-intentioned, he maintains a quiet arrangement with his demonic counterpart to offset each other's work and avoid unnecessary effort.

Originally the serpent who tempted Eve, Crowley is a demon who has grown entirely comfortable with the twentieth century. He lives in a modern, luxurious apartment and drives a vintage 1926 Bentley at terrifying speeds through London. Like Aziraphale, he appreciates human ingenuity and actively dreads the impending apocalypse that threatens his preferred lifestyle.

Adam is an eleven-year-old boy growing up in the quiet village of Lower Tadfield, completely unaware that he is the Antichrist. Because of a hospital mix-up at his birth, he avoids the demonic influences intended for him and instead lives a mundane, idyllic childhood. He serves as the unquestioned leader of his local friend group and spends his days roaming the neighborhood woods and quarry.

Anathema is a practical occultist who relocates to Jasmine Cottage in Lower Tadfield. As the descendant of a highly accurate seventeenth-century witch, she dedicates her life to interpreting her family's prophetic book to prepare for the end of the world. She balances her hereditary duties with modern sensibilities, taking an active interest in environmentalism and local ley-lines.

Newton is a socially awkward, unfulfilled clerk with a disastrous affinity for technology. Machines consistently malfunction in his presence, leaving him frustrated. Seeking a sense of adventure to break up his monotonous routine, he answers a newspaper advertisement and joins the Witchfinder Army, approaching his bizarre new duties with earnest dedication despite his lack of practical skills.

Witchfinder Sergeant Shadwell is an abrasive, impoverished traditionalist who leads the Witchfinder Army, which consists entirely of himself and his single new recruit. He views the modern world with deep suspicion and relies heavily on the charity of his downstairs neighbor, whom he regularly insults. Unbeknownst to him, he is simultaneously employed by both heavenly and demonic forces to gather local information.

Madame Tracy is an amiable, pragmatic woman who operates as both a psychic and a sex worker out of her apartment. She provides daily meals and basic care for Shadwell, calmly brushing off his moral outrage and verbal abuse. She understands people's needs and approaches her unconventional professions with a cheerful, business-like demeanor.

Agnes Nutter was a seventeenth-century witch who authored a completely accurate, highly specific book of prophecies before being burned at the stake. Unlike other seers who wrote in vague symbols, she documented literal events down to the mundane details. Her lingering influence dictates the actions of her descendants centuries after her death.

Pepper is a practical, sharp-tongued member of Adam's local gang, The Them. She frequently challenges the group's assumptions and serves as a vocal participant in their ongoing debates about supernatural phenomena and neighborhood politics.

Wensleydale is the analytical, scholarly member of The Them. He often provides factual context or pedantic corrections during the gang's elaborate games and conversations, balancing out the more chaotic energy of his friends.

Brian is a scattered, good-natured, and somewhat slovenly member of Adam's friend group. He enthusiastically participates in their games and schemes, bringing an easygoing attitude to the gang's daily adventures.

Dog is a hellish entity initially sent to awaken the Antichrist's powers. When Adam wishes for a small, intelligent companion to hunt rabbits, the beast instantly morphs into a scruffy, normal-looking mongrel to appease him. He remains fiercely loyal to the boy.

War is one of the Four Horsepersons of the Apocalypse, taking the modern form of a glamorous, eternally youthful war correspondent and weapons trafficker. She incites conflict and bloodshed wherever she travels, taking immense satisfaction in humanity's violent tendencies.

Famine is an apocalyptic Horseperson who has adapted to the modern era by writing diet books and creating overpriced, nutritionally void synthetic meals. He strategically starves populations by monetizing thinness and replacing genuine food with artificial corporate products.

Pollution took over the apocalyptic duties of Pestilence following the discovery of penicillin. Operating quietly across various industries, he actively encourages environmental degradation, chemical spills, and the destruction of natural habitats.

Death is the oldest, most powerful, and only unchanged member of the Four Horsepersons. It operates as an implacable, shrouded force of nature that calmly collects souls and coordinates the final ride toward Armageddon.

Hastur is a traditionalist demon who favors corrupting humans one soul at a time. He views Crowley's modern, large-scale methods of temptation with disdain and acts as an enforcer to ensure Hell's plans proceed without interference.

Ligur is a demon who works closely alongside Hastur. Like his partner, he distrusts Crowley's flashy lifestyle and prefers the old-fashioned, grimy work of corrupting the human race manually.

Warlock is the normal human child of an American diplomat who is mistakenly raised by demonic and angelic nannies. Because Crowley and Aziraphale believe he is the Antichrist, they spend years trying to influence him, resulting in a boy who is remarkably average.

Thaddeus Dowling is the American Cultural Attaché stationed in England. He is a busy diplomatic figure whose high-profile status made his family the intended target for the placement of the Antichrist.

Harriet is the wife of the American diplomat assigned to England. She raises young Warlock with the help of various peculiar nannies and gardeners, entirely unaware of the celestial battle occurring around her family.

Sister Mary is a scatterbrained nun belonging to the Chattering Order of Saint Beryl, a sect of Satanists. Her distracted nature leads to the monumental error of handing the Antichrist to the wrong local family instead of the American diplomats.

Mr. Young is a practical, ordinary resident of Lower Tadfield. He believes he is raising a normal boy and approaches fatherhood with a mixture of stern discipline and mild exasperation.

Mrs. Young is a resident of Lower Tadfield and the mother of the child who was meant to grow up entirely normal. She raises Adam with her husband in the quiet English countryside.

The Lord of Darkness rules over Hell and issues the final commands regarding the apocalypse. He demands absolute obedience from his demonic subjects and expects the delivery of the Antichrist to trigger the end of the world.

The Metatron serves as the Voice of God, handling the bureaucratic and communicative duties of Heaven. It insists that the prophesied battle must occur precisely as scheduled to ensure Heaven's victory over Hell.

Beelzebub operates as the high-ranking demonic counterpart to the Metatron. Leading the bureaucratic and military operations of Hell, Beelzebub is determined to see the final war against Heaven begin on schedule.

He is a zealous seventeenth-century witchfinder who successfully burns Agnes Nutter at the stake, though he perishes in the resulting gunpowder explosion. He is the direct ancestor of modern-day recruit Newton Pulsifer.