TV-Series
Description
Born in the 16th century to the human noble House d'Apchier in Gévaudan, Chloé d'Apchier transformed into a vampire at age four following the Babel Incident. Her father concealed her existence, forbidding her to reveal her face or leave their castle without permission. Her physical aging ceased by eleven, prompting the family to publicly announce her death from illness while secretly sheltering her as their "hidden vampire." Her father dedicated his life to researching the World Formula to restore her humanity, though later generations shifted the research toward political gain. Chloé remained confined within the family's forest-bound castle for centuries, witnessing generations pass.

Her first encounter with another vampire was August Ruthven, who visited expressing interest in the d'Apchiers' research. A friendship formed, with Ruthven sharing tales of the outside world during periodic visits. He later entrusted her with caring for Jeanne, the daughter of his students. Jeanne's energy inspired Chloé to disobey her father for the first time, venturing outdoors and forming a deep sisterly bond. This ended when Ruthven reclaimed Jeanne, leaving Chloé profoundly affected. Decades later, after learning of Jeanne's enslavement as a Bourreau and Ruthven's betrayal during the Vampire War, their friendship violently dissolved. Ruthven attacked Chloé to seize the World Formula Alteration Device, forcibly drinking her blood.

As vampire hunts escalated in Gévaudan, the Catholic Church fabricated the "Beast of Gévaudan" narrative to justify extrajudicial killings. Chloé discovered the brutal truth witnessing Church members behead a victim. Her report to the d'Apchier family head led to his death and several relatives being killed by suspicious villagers. Ostracized by her remaining family, Chloé lived in isolation until encountering Jean-Jacques Chastel, a young vampire abused by his human parents. She took him in, and they became inseparable companions. To end the killings, Jean-Jacques offered his True Name to the entity Naenia, transforming into the Beast as a scapegoat. When Jeanne arrived to slay the Beast—believed to be Chloé—Chloé attempted suicide by leaping from a height. Naenia intervened, offering survival and power for revenge in exchange for willingly becoming a curse-bearer. Chloé accepted, contracting the Malnomen "Millie, Theater of Ice and Snow."

This Malnomen manifested as an enclosed world shaped by her memories, expanding to engulf Gévaudan's forests. It replicated people and events from her past, trapping the area in a repeating cycle. After a kiss from the resurrected Vampire Queen Faustina, the Malnomen advanced to its most dangerous state, amplifying its destructive power. This erased Chloé's reason, transforming her into a mist-like entity that mindlessly drew in and scrambled gravity, causing terrestrial fragments to float. She also generated wolf-like familiars from black mist to attack indiscriminately. The Malnomen's cure required her conscious will to survive; Vanitas later facilitated this using his Mark of Possession to amplify the Book of Vanitas's power, breaking the curse.

Physically, Chloé appears as a prepubescent girl, pale-skinned with large gray eyes and short silver hair, though her expressions convey incongruent maturity. Her personality blends cold detachment with underlying kindness toward allies. She fiercely upholds her duties as the d'Apchier Marchioness, citing her family's duty to protect their people as a point of pride. She acknowledges her own jealousy and vengeful nature, swearing retribution against those who harm her loved ones. Despite her reclusive upbringing, she exhibits curiosity about outsiders and finds solace walking in forests.

Her words reflect deep despair during isolation, a resolute call for vengeance, and a fierce declaration to profess her love for Gévaudan's people as her duty. Her story concludes with her accepting her father's wish as an expression of love, finding peace after her curse is broken.