Gender: Male | Age: Thousands of years old Species: Demon Personality: Reticent and quiet. The demon contracted to Alice and the Ruler of the Abyss. He is a knight who assisted the previous generation in slaying demons 2,000 years ago. He remains loyal to Alice even after her transformation, though he feels a sense of bitterness regarding her fate. He hides within Alice's shadow and emerges only when summoned. He wears a blindfold and wields a greatsword.

Gender: Male | Age: 18 Species: Demon Personality: His former sly and lively demeanor has faded, replaced by a cynical and serious outlook. Head of the Creios family, which maintains a relationship of both rivalry and cooperation with the Madhearts. Originally human, his condition worsened due to a curse until he eventually turned into a demon. Once Alice's rival and comrade, he eventually became her lover. He searches for the missing Alice, firmly believing she is still alive. He fights with twin pistols loaded with silver bullets.

Gender: Male | Age: 18 Species: Half-Demon Personality: Gentle and polite. Allen's bodyguard and subordinate, usually working as a footman. He is Beta's twin brother. He addresses Allen as "Young Master." He feels heavy-hearted watching Allen's current state. His weapon of choice is a greatsword.

Gender: Female | Age: 18 Species: Half-Demon Personality: Rational and passionate. Allen's bodyguard and subordinate, usually working as a maid. She is Alpha's twin sister. She addresses Allen as "Young Master." She feels heavy-hearted watching Allen's current state. Her weapon of choice is a sword.

Gender: Male | Age: 18 Species: Human Personality: Extremely cold and cruel. Alice's new partner in the fight against demons. Born in the slums to an alcoholic father and raised under the abuse of corrupt police, he eventually murdered both his father and the officers, leading him into a life as a hitman. He joined Alice after hearing her proposal. He enjoys torture and spends his free time watching violent movies online. He is a master swordsman who uses high speed to strike from blind spots. Due to his short stature, he is often mistaken for a younger sibling, a label he despises with a cold fury. He hates milk and the police. His voice is falsetto and whisper-like.

Gender: Male | Age: Mid-50s Species: Human Personality: Serious. A bounty hunter and Devil Hunter. He is a former detective. He has been tracking Nine ever since he was tortured by him during his days on the force. He uses a CZ 75 automatic pistol as his weapon.

Gender: Female | Age: 18 Species: Human Personality: Calm and thoughtful. One of Alice's few close friends. She possesses prophetic abilities with nearly 100% accuracy. She primarily records her prophecies in the form of poems or fairy tales, but can also divine the future through drawings, tarot cards, or astrology.

Gender: Female | Age: 18 Species: Human Personality: Energetic and cheerful. A famous tailor and arms dealer who runs a clothing boutique. She is exceptionally skilled at weapon manufacturing and takes great pride in her craft. She used to stay in touch with Alice before her disappearance, but contact has recently been severed.

Gender: Male | Age: Mid-to-late 30s Species: Human Personality: Kind and dignified. An information broker and bartender. He lost his sight due to a disease called "Blind Spot Syndrome," but gained extraordinary hearing that allows him to detect the slightest sounds. He has grey spots covering half of his face.