Gender: Male / Age: Thousands of years old Species: Human → Demon The Demon contracted to Alice and the Ruler of the Abyss. He was originally a knight who helped his predecessor hunt demons, but for some reason, he turned into a demon and was sealed away. He usually hides within Alice's shadow and wears a blindfold. He harbors an extreme hatred for the Four Greater Demons, especially Bael and Lilith. He wields a massive greatsword. He is calm and taciturn. While he hates Lilith, he also feels a complex sense of love-hate toward her.

Gender: Male / Age: 17 Species: Human? The head of the Creos family. His family is both a rival and a partner to the Madheart family. He is sly and energetic, but also shows a serious and rational side. Due to Astaroth's lingering curse, he is currently undergoing a partial demonization. He uses dual pistols loaded with silver bullets.

Gender: Male / Age: 17 Species: Half-Demon Personality: Gentle and polite. Allen's bodyguard and subordinate, usually working as a footman. He is the twin brother of Beta. A hybrid of human and demon. He wields a greatsword.

Gender: Female / Age: 17 Species: Half-Demon Personality: Rational and passionate. Allen's bodyguard and subordinate, usually working as a maid. She is the twin sister of Alpha. A hybrid of human and demon. She wields a sword.

Gender: Female / Age: Thousands of years old Species: Demon One of the Four Greater Demons, known as the "Flower of Death." She carries a staff topped with a mirror and can manipulate plants at will. 2000 years ago, she worked alongside the predecessor Alice Madheart to protect humanity. However, after the predecessor died due to the atrocities of Bael, Astaroth, and Bathin, she witnessed the malice of humans and fell into darkness. She sealed Agares, who had abandoned his goals and turned into a demon, and then sealed herself and the other three demons to take responsibility. She was released from the seal 2000 years later. Despite seeing human malice, she still loves humans and suffers from guilt and self-loathing over the past. She possesses an extreme mindset, willing to use the wrong methods if it means protecting everything. Even knowing her sins, she refuses to betray the Four Greater Demons and cannot forgive herself, desperately clinging to their broken relationships—a truly slothful soul in her refusal to move forward.

Gender: Male / Age: 17 Species: Half-Demon Lilith's subordinate. A hybrid of human and demon. In the past, he was ostracized for being a "half-breed" and wandered aimlessly until Lilith took him in. He loathes and dislikes humans, but not indiscriminately. He follows Lilith's words blindly. He wields a sidesword.

Gender: Female / Age: 17 Species: Half-Demon Personality: Cold and quiet. Lilith's subordinate. A hybrid like Asta. She treats humans with neutrality. She has a black spot on the left side of her face that can flow like liquid. She can manipulate blood and creates weapons by wounding her own arms during combat. She has absolute faith in Lilith's words.

Gender: Female / Age: 16 Species: Half-Demon Lilith's subordinate. A hybrid of human and demon. After suffering terrible abuse at the hands of the three demons in the past, she was taken in by Lilith. Unlike the quiet Asta and Ramiel, she is kind and slightly timid. She speaks politely. She follows Lilith's orders with blind devotion. She possesses butterfly-related abilities used for scouting and combat.

The predecessor head of the Madheart family. Currently deceased.

Gender: Male / Age: Thousands of years old Species: Demon One of the Four Greater Demons, known as the "Moth of Chaos." A psychopath who toys with his targets until he is bored, then kills them. His thoughts are unpredictable, and he acts purely on whim. He harbors a twisted affection and love for Lilith. He carries a cane and uses it like a microphone. Beautiful moth wings grow from his head.