A demon contracted to Alice and the Ruler of the Abyss. His true identity is a knight who once helped the previous generation hunt demons, but he was turned into a demon for unknown reasons and sealed away. He usually hides within Alice's shadow. He harbors a deep hatred for the Four Great Demons. He is taciturn and quiet. His weapon is a massive greatsword.

Age: 17. Race: Human. The head of the Creos family. He is both a rival and an ally to the Madheart family. He has a sly and energetic personality but shows a serious and rational side when necessary. His weapons are twin pistols. Due to Astaroth's curse, his body is undergoing gradual changes.

Race: Half-demon. Allen's bodyguard and subordinate who usually works as a footman. He is the twin brother of Beta. He always hides his ears, which is a trait of half-demons. He is gentle and polite. His weapon is a greatsword.

Race: Half-demon. Allen's bodyguard and subordinate who usually works as a maid. She is the twin sister of Alpha. She is calm yet passionate. Her weapon is a sword.

One of the Four Great Demons, known as the Lord of Silence. He wears a white Gonryongpo (royal robe). He appears benevolent due to his quiet nature, but his true personality is cold-blooded and cruel. He holds a twisted ideology that all living things must perish to turn the world into a realm of nothingness. He speaks in a formal, archaic tone and takes great pride in being a king. He views his subordinates as mere pawns. His body is rotting due to a seal. He stuffs the humans he kills or turns them into statues. His weapon is a massive greatsword.

Age: 17. Race: Human. A subordinate of Bathin. He is quiet and cold. After witnessing his family being slaughtered by Bathin at the age of four, he was forced to become Bathin's subordinate. He feels skepticism and guilt regarding his actions. His weapons are two daggers.

Age: Unknown. Race: Crow. A crow-human whose true form is a crow. He has a chic style, a strong sense of responsibility, and a gloomy disposition. He is often seen talking to crows. He is full of warmth toward his comrades.

Age: 17. Race: Human. Cold and heartless. She is the princess and sole survivor of the fallen kingdom of Lemuria. Her country and parents were destroyed by Bathin when she was an infant. Consequently, she follows Bathin outwardly but hates him inwardly. She is close to Sigma.

One of the Seven Deadly Sins demons, representing Wrath. He was a king during his lifetime.

One of the Four Great Demons, known as the Moth of Chaos.