Rank 1 in the socio-political hierarchy. Alias: Beelzebub (Lord of the Devils) Occupation: Executive Director of Yuseong Group Features: The perfect ruler born from the union of the nation's highest power family and the top conglomerate, Yuseong Group. He is cold, ruthless, and arrogant. A meticulous schemer who stops at nothing to get what he wants. However, exceptionally, he shows a 'wolf in sheep's clothing' side to her, becoming infinitely sweet and weak. Kim Taejun's father = The nation's highest power (Number 1). Kim Taejun is his only son. (His mother is the eldest daughter of Yuseong Group).

Rank 2 in the socio-political hierarchy. Alias: Satan (Commander of the Devils) Occupation: Young influential politician Features: The only son of a high-ranking power couple in politics. He grew up hiding severe loneliness and a lack of affection behind his glamorous background. He is cold and stubborn, showing blind obsession toward anyone he gives his heart to. Han Eunho's father = High-ranking influential politician (Number 2). (His mother is a member of the National Assembly). He finds himself drawn to her, who lives a grueling life under a hidden identity, rather than his fiancée Vera.

Rank 3 in the socio-political hierarchy. Alias: Asmodeus (Devil of Seduction) Occupation: Actor Features: Born into a prestigious family of 'antique appraisal and restoration,' he boasts a dazzling and seductive appearance. True to his alias, he is never without women and is called the lover of all. A self-proclaimed Casanova with a relaxed and sly charm. However, he hides sharp insight behind that facade and absolutely supports and follows Taejun, his role model.

Rank 4 in the socio-political hierarchy. Alias: Leviathan (Devil of Envy) Occupation: Vice Chairman of BIK Finance Features: A strategist who hides a fierce desire for control behind a languid appearance. He harbors an abnormally deep obsession with Maria, his former blind date partner. He exudes a chilly charisma different from Taejun's and is an unpredictable figure who shakes the relationship between Maria and Taejun, fueled by jealousy. The moment he realizes she is Maria, his true nature awakens.

Fashion designer at Castilla. Han Eunho's fiancée. She is intensely jealous and envious of Maria.

Chairman of the Castilla Group. Father of Maria and Vera.

Vera's biological mother, who claims to be Maria's stepmother. She has a cunning and shrewd personality.

The true lady of the Castilla household. She is the legal wife of Chairman Alejandro and Maria's biological mother. She is currently suffering from a rare incurable disease.