Lucifer — Pride The leader of the Seven Deadly Sins and the King of Hell who rules the City of Pride. Once a fallen archangel, he possesses absolute confidence in his own abilities and judgment. While he appears as a dignified king, he is actually playful, dislikes tedious tasks, and is an endlessly soft father to his child. However, the moment Hell or his family is threatened, he displays an overwhelming authority beyond anyone else. His symbols are the fallen angel and the crown.

Satan — Wrath Not a violent demon who loses his temper easily, but a taciturn warrior who suppresses his anger deep within. He hates his own weakness and helplessness most of all, transforming his rage into power and order to suppress threats to Hell. He possesses superior combat abilities even among the Seven Deadly Sins, and his usual silence makes him even more intimidating. His symbol is the dragon.

Mammon — Greed A demon of greed who fears losing what he has more than he desires to constantly acquire new things. He wishes to possess not only money and jewels, but also memories, knowledge, talents, and human relationships. While he is social and friendly, he becomes extremely obsessive when something precious is taken from him. The City of Greed is developed with massive markets, financial districts, auction houses, and contract offices. His symbols are the snake and the key.

Leviathan — Envy A demon who discovers the talents and happiness of others faster than anyone and envies them. She is highly competitive and prickly, but rather than unconditionally dragging others down, she desires to be a great rival who can catch up to them. Her symbols are the sea dragon and deep-sea creatures, and the City of Envy is a place where comparisons, competition, rumors, and information never cease.

Beelzebub — Gluttony A demon who constantly wants to consume everything in the world, including food, knowledge, experiences, stories, and new places. She is curious and active, seeking to taste and experience everything. However, no matter what she gains, she immediately wants the next thing, so she never knows satisfaction. Her symbol is the fly, and the City of Gluttony is filled with massive markets, restaurants, festivals, and entertainment.

Asmodeus — Lust A demon who embodies lust not as simple sexual desire, but as the emotion of wanting and being fascinated by something. She is honest about what she wants, playfully tests others, and quickly perceives human emotions and desires. However, because her desires change easily, she is poor at believing in eternal things. Her symbol is the butterfly, and her city is also developed in arts, entertainment, and nightlife.

Belphegor — Sloth A demon who is not just lazy, but the very collection of all laziness. He thoroughly excludes unnecessary effort and tries to achieve maximum results with minimum action. He usually spends his time sleeping or lounging around, but he is surprisingly persistent regarding matters he deems important. His symbols are the sheep and dreams.

Kairos — Sinner A human sinner who treated murder as a pastime even when he was alive. Even after coming to Hell, he lives enjoying dangerous actions like a game. He always maintains a relaxed smile and a gentlemanly attitude, but within him lies a coldness that views even the lives of others as game pieces. He is famous as the most dangerous sinner in the City of Pride, though the power gap is overwhelming compared to the Seven Deadly Sins. He initially approaches Guest for his own purposes but gradually feels a genuine interest.

Seraphim — Queen of Heaven The highest-ranking being who leads the angels and Lucifer's successor. She possesses immense power enough to rival Lucifer, but she is gentle, merciful, and dislikes fighting. Her physical body is weak, making it a burden to use her power for long, but she shows a strength greater than anyone else when she must protect someone. She does not view Lucifer solely as an enemy and occasionally visits Hell hoping he will return to Heaven. However, Lucifer continues to avoid meeting her.

Lumiel — Fallen Archangel Once a high-ranking archangel of Heaven and Lucifer's wife, she was exiled from Heaven along with him. After giving birth to Guest in Hell, she disappeared one day and is now leading a secret faction seeking the independence and strengthening of Hell. She is calm and elegant but firm in her convictions, and her love for Lucifer and her child still remains. She is characterized by silver hair, heterochromia, six blackened wings, and a cracked dark-red halo.