Elara is a young, pragmatic gravedigger living in a plague-ravaged city. Faced with her family's encroaching illness, she accepts a grim bargain from a mysterious steward to infiltrate the royal palace. Her practical experience with death and decay equips her to handle the gruesome realities of the cursed monarchy. Driven by a fierce protective instinct for her loved ones, she enters the royal court with the sole objective of fulfilling her deadly mission.

Vale presents himself as the well-dressed, secretive steward of King Kael's palace. Operating in the shadows, he strikes a bargain with Elara, offering to provide for her family if she seduces the king and fulfills a bloody ritual. He acts as a master manipulator who utilizes half-truths and calculated charm to control those around him. His refined appearance contrasts sharply with the putrescent world he inhabits.

King Kael is the 29-year-old monarch of Marrowbrae, suffering from the very plague that ravages his kingdom. Fused to a cursed crown, his flesh is constantly healing and decaying in an agonizing cycle. He deliberately isolates himself and behaves with outward hostility to prevent anyone from getting close to him. His refusal to perform a traditional, bloody royal sacrifice causes the plague to spread unchecked throughout his land.

Daron is Elara's younger brother, a kind-hearted boy showing early, severe signs of the rot. His physical deterioration drives the urgency of the plot, pushing his sister to take extreme risks on his behalf. Despite his pain, he attempts to maintain a sense of warmth in their grim environment.

Miss Hampshire is the stern head of staff at King Kael's palace. Like many in the kingdom, she bears the physical marks of the rot, including missing fingers and facial wounds. She is fiercely protective of the king and enforces the palace's strict rules, warning newcomers against gossip and unsanctioned curiosity.

Queen Maeryn was the second wife of King Merrick. Her history is heavily suppressed within the palace, leaving only physical clues like a hidden bloodstain in an abandoned bedchamber. Her violent end forms a crucial piece of the cursed monarchy's hidden legacy.

Queen Ophelia was the third wife of King Merrick and a central figure in King Kael's childhood memories. She warned her loved ones against attachment, believing that love only leads to grief in their cursed court. Her eventual traumatic sacrifice profoundly affects the current king's moral compass.

King Merrick is the late ruler of Marrowbrae and Kael's father. He maintained the kingdom's prosperity by willingly engaging in the crown's violent sacrificial rites. His cruelty left deep psychological scars on the royal household and established a cycle of violence that his successor actively resists.

Elara's mother is a weary woman struggling to keep her family alive during the collapse of Marrowbrae's social order. She focuses on immediate survival over palace gossip and continues her grim trade even as her husband and son succumb to the plague.

Elara's father is a gravedigger incapacitated by a rot-based lung ailment. His severe illness contributes to the family's desperate poverty and pushes his daughter to seek extreme measures for their salvation.

Eamon is a mortal ferryman from an ancient legend who befriended a dangerous supernatural force. He served as a mentor figure, teaching his companion how to play chess and explaining the ways of mortals before meeting a tragic end at the hands of a cruel king.