Fox is a mortal who possesses eternal youth thanks to a gifted watch from Time. He operates a medium business in Chicago, using his unique connection to his godfather to verify information from the afterlife. He struggles with feelings of inferiority around immortal beings but possesses deep empathy for those experiencing loss.

Viola is an aswang, a shapeshifting vampire from Filipino folklore, who works as a real-estate agent in Chicago. She actively resists her violent immortal instincts and refuses to consume human blood, choosing instead to find support through the group Creatures Anonymous. She desperately wishes to feel human emotions again and focuses her energy on selling a heavily haunted property.

Brandt is a Norse demi-god and the son of Odin. Known primarily as a thief and a liar, he has a long history of playing dangerous immortal games. He carries a complicated past with Fox, characterized by his inability to speak the absolute truth and his arrogance regarding eternal life.

The literal personification of mortality, Death acts as a mentor and godfather to Fox. Despite his imposing title, he exhibits human flaws, particularly a severe gambling compulsion that draws him to illicit immortal games. He speaks with dark humor and possesses immense cosmic authority over the afterlife.

Volos is a powerful demon king who styles himself as the king of vice. He manipulates the underground gambling tables by wearing a mortal's skin to enter the games illegally. He desires total mastery over the afterlife and actively threatens the mortal plane with destruction.

Tom is the ghost of the murdered heir to the Parker fortune, permanently tied to his family's Chicago mansion. He has no memory of his own death or his killer's identity, leaving him trapped in a state of limbo. He feels isolated since only supernatural creatures can perceive him.

Isis is a demon and a prominent member of Creatures Anonymous. She understands the complex rules governing immortals and the supernatural economy. She provides Viola with guidance on navigating her vampirism without harming mortals.

Cal is a reaper tasked with retrieving souls from the mortal plane. Formerly a human from Mykonos who died in a drunken fight, he accepted afterlife employment from the archangels to balance his cosmic ledger and avoid punishment.

Mayra is a guardian angel who monitors human wishes and prayers. She questions the cosmic philosophy of universal balance that the archangels promote, finding it insufficient for addressing immediate human suffering. She took her angelic position to clear a negative mortal ledger.

Raphael is a powerful archangel who helps manage the afterlife's vast bureaucracy. He firmly believes in the philosophy that cosmic balance is necessary, even when it allows for suffering on Earth.

Gabriel is an archangel responsible for overseeing the ledgers of mortal and immortal souls. He works alongside Raphael to maintain order when Death neglects his duties for the underground gambling tables.

Lainey is a water spirit and former member of Creatures Anonymous who successfully won mortality in the immortals' game. She finds human emotion overwhelming and remains deeply connected to the mystery of Tom Parker's death.

The great-grandfather of Tom Parker and the patriarch who established the family fortune. His mysterious past involving a demonic pact initiated a bloodline curse, driven by an insatiable hunger for wealth and prolonged youth.

A Norse goddess confined to a mystical garden. She trades her apples of eternal youth to Brandt in exchange for stories about the outside world, serving as a rare source of genuine counsel for the demi-god.