Hades is the brooding god of the Underworld and proprietor of Nevernight, a popular nightclub in modern New Athens. He operates strictly on bargains and contracts to maintain a cosmic balance and avoid emotional vulnerability. Despite his dark reputation and intimidating divine form, he possesses a strict code of honor and struggles with deep-seated loneliness.

Persephone is an ambitious journalism student at New Athens University who lives under a mortal disguise. As the goddess of spring, she possesses latent divine power that her mother has long suppressed. She is compassionate and fiercely determined to forge her own identity outside her mother's strict control.

Aphrodite is the cynical goddess of love who initiates conflict for her own entertainment. Trapped in a stagnant marriage, she projects her own romantic frustrations onto others. She uses an old favor to force Hades into a wager requiring him to make someone fall in love with him.

Sisyphus is an arrogant mortal crime lord who traffics the illegal drug Evangeline. He embodies unchecked mortal ambition and displays a cynical view of humanity. By using a magical relic from an ancient war, he actively defies divine law and disrupts the cosmic balance to cheat death.

The Fates—Clotho, Lachesis, and Atropos—are the inscrutable arbiters of destiny who weave the threads of life for all beings. They enforce the cosmic balance and manipulate the lives of both gods and mortals to settle old scores. They hold immense power over destiny but remain bound by universal laws.

Demeter is the goddess of the harvest and Persephone's overbearing mother. She strictly controls her daughter's life, suppressing Persephone's divine magic to keep her hidden. She holds a deep-seated hatred for the god of the dead and works aggressively to prevent any connection between him and her daughter.

Hecate is the ancient goddess of witchcraft and the acclaimed Lady of Tartarus who resides in the Underworld by choice. She exhibits fierce loyalty and dark humor, serving as a grounding force for Hades. She frequently offers blunt advice about his emotional distance and shares pragmatic wisdom when he needs it.

Minthe is a nymph who has served as Hades's assistant since ancient times. She harbors an unrequited attachment to the god of the dead and feels a sense of ownership over him and his domain. She views any new presence in Hades's life as a direct threat to her own ambitions for power.

Hermes is the flirtatious god of trickery and messenger of the gods. As a guide to souls, he moves freely between the Upperworld and the Underworld. Beneath his frivolous exterior, he is a loyal ally who provides unsolicited but accurate observations about his friends' lives.

Hephaestus is the reserved god of fire and invention. A master craftsman, he creates powerful magical artifacts and mechanical devices to avoid the dramatic social world of the Olympians. He maintains a facade of indifference regarding his unhappy marriage to mask his fear of rejection.

Poseidon is the volatile god of the sea. Driven by petty jealousy and a lust for power, he actively works to undermine his brothers' authority. He operates from the underwater city of Atlantis and engages in reckless behavior simply to frustrate those around him.

Zeus is the king of the gods, acting as a detached and self-serving ruler. He prioritizes maintaining his own political power and privileges over resolving conflicts within his divine family. He presides over the Olympian council with a cynical view of his fellow gods' motives.

Adonis is a mortal man who holds Aphrodite's favor. He inserts himself into Persephone's life, crossing boundaries and causing friction between her and Hades.

Thanatos is the god of death. He functions as a grim informant for Hades, tracking the cosmic imbalances caused by mortals who cheat their destined ends.

Helios is the god of the sun and one of the few Titans who allied with the gods. He stubbornly guards his information and prized livestock on Mount Olympus.

Orpheus is a grieving mortal who breaks into the Underworld. Burdened by survivor's guilt, he pleads for a chance to subvert the natural order of death.

Theseus is the demigod son of Poseidon. He associates with anti-god organizations and seeks to accumulate power through binding bargains.

Ilias is an assistant to Hades who monitors security and manages tasks in the Underworld and Nevernight.

Duncan is an ogre employed as a bouncer at Hades's club. His violent behavior violates Hades's strict code of honor, leading to severe consequences.

Vasilis is a Magi forced into service by the anti-god Triad. He creates magical portals to aid criminals in escaping divine justice.

Lexa is Persephone's mortal roommate and friend. She is completely unaware of the mythological drama unfolding around her until divine forces intrude on their home.

Jaison is a mortal friend of Persephone who spends time at her apartment watching movies.

Amphitrite is the wife of Poseidon. She acts as a pacifying force when her husband's reckless brawls threaten to destroy their surroundings.

Eurydale is a bouncer at Nevernight with snake-hair. She possesses deep loyalty to Hades, who nursed her back to health and employed her after she was assaulted and blinded in the past.

Antoni is a cyclops who works as a driver for Hades. He provides safe transport between the mortal world and divine locations.

Rosalva is a dryad caught spying on Persephone. She faces the terrifying choice between betraying her employer or facing the wrath of the god of the dead.

Charon is the ferryman of the Underworld who transports souls and guides visitors to the divine throne room.

Isidore is a mortal operative bearing a triangle tattoo showing allegiance to the anti-god Triad. He was killed by his own boss before facing divine judgment.

Eurydice is a mortal soul residing in the Underworld, separated from her living husband by death.