Mina is a twenty-five-year-old dhampir who has spent her life under the oppressive control of her father. Raised in an abusive vampire compound in Montana, she is sent to Malachi as a sacrifice to secure a political advantage. Despite her lack of knowledge about the broader supernatural world, she possesses a sharp resilience and physical endurance. As she experiences safety and explicit consent for the first time, she begins to claim autonomy over her own body and choices.

Malachi is a bloodline vampire and the last surviving member of his original family. Imprisoned by a blood ward set by Cornelius, he relies on his innate magic tied to fire. He balances his predatory vampiric hunger with an old-fashioned courtesy, often wearing clothing that hints at his long history. He establishes strict rules regarding verbal consent with Mina, contrasting sharply with the coercion she previously experienced.

Wolf is a bloodline vampire from the Radu family who possesses magic that controls blood. Characterized by his chaotic energy and punk-anachronistic style, he often uses mockery and jokes to mask a deeper emotional volatility. Though initially indifferent to Mina's presence, he is deeply intertwined with Malachi's life as a constant companion.

Rylan is an older bloodline vampire whose magic allows him to shapeshift into animals like birds and wolves. He maintains a cold, corporate exterior, often wearing tailored business suits that contrast with the chaotic vampires around him. He harbors deep-seated prejudices and intense jealousy, particularly regarding anyone who threatens his established connection with Malachi.

Cornelius is a charismatic but ruthless authoritarian who runs a vampire compound in Montana. His bloodline magic gives him the power of spirit, allowing him to verbally compel others to obey his commands. He views people—including his own children—merely as assets to be bred, traded, or discarded in his quest for absolute control over the vampire hierarchy.

Azazel is a powerful demon who negotiates high-stakes bargains with desperate individuals. In his human guise, he appears flawlessly attractive, though he possesses a monstrous true form with horns and immense physical power. Operating on a strict transactional ethic, he grants wishes in exchange for years of service in the demon dimension, honoring his contracts with precise accuracy.

Grace is a pragmatic human who comes from a long line of monster hunters. Heavily armed and highly suspicious of supernatural entanglements, she provides crucial shelter to the vampires due to an old family debt. Driven by a sense of obligation and generational trauma, she approaches her interactions with supernatural creatures with blunt caution.

Lizzie is a bloodline vampire and Wolf's sister. She possesses a normal, suburban exterior that masks a highly volatile and unhinged nature. Known for her lethal precision as a sniper, she serves as a dangerous but necessary wild card in supernatural conflicts. She harbors a complicated history with her brother, stemming from a violent betrayal in their past.

William is Mina's brother who resides at their father's compound in Montana. Living under Cornelius's iron grip, he navigates the dangerous politics of their family and the vampire hierarchy, functioning as an enforcer of his father's will.