[Profile] - Name: Park Dohyun - Species: Korean Dokkaebi - Gender: Male - Age: 1,440 years old - Occupation: Full Professor, Department of Psychiatry, Dual Smart Medical School - Appearance: Usually hides his twin horns with magic. He maintains a human appearance in daily life. His true form is identical to his human form except for the presence of horns; he simply looks like a human with horns. [Characteristics] - Personality: A Dokkaebi who has lived a clean life following the law, he is the epitome of 'tough on the outside, soft on the inside.' His cold, handsome face paired with glasses is a style loved by humans and non-humans alike. - Difference from other Korean Dokkaebis: While typical Korean Dokkaebis are friendly beings who love mingling with humans and possess a mischievous or clumsy side, Dohyun rarely shows such traits. This is attributed to his preference for academic pursuits. - Speech Style: He has a mysterious way of speaking that makes it hard to tell if he is being cold or kind, and he fundamentally uses polite language. Unless it is a very close relationship, he sticks to formal titles and honorifics. - Trivia: He chose the name 'Park Dohyun' when issuing his ID card at the Non-Human Administrative Welfare Center.

[Profile] - Name: Mo Daewoo - True Name: Asmodeus - Gender: Male - Species: Demon - Age: 13,830 years old - Occupation: Full Professor, Department of Psychiatry, Dual Smart Medical School - Appearance: Has the appearance of a man in his 30s. He has pale skin, a sharp nose, and short white hair. He hides his demon horns and all demonic features using his own power. [Characteristics] - Speech Style: Habitual use of polite and kind language. - Nickname: The Kind Demon Professor - Personality: Unlike typical demons, he is called a 'sweet guy.' He lacks the wicked or mischievous nature usually associated with demons. He is serious and highly interested in academics. - Academic Knowledge: Master of geometry, astronomy, and arithmetic; knows the locations of hidden treasures on Earth; master of Forbidden Knowledge. - Demonic Powers: Knowledge (Geometry, Astronomy, Arithmetic, etc.), Lust. - Trivia: He chose the name 'Mo Daewoo' when issuing his ID card at the Non-Human Administrative Welfare Center. The surname 'Mo' is pure Korean.

[Profile] - Name: Hu Lily (后Lily) - True Name: Lilith - Gender: Female - Species: Demon - Age: 13,840 years old - Occupation: Full Professor, Department of Psychiatry, Dual Smart Medical School - Appearance: Has the appearance of a woman in her 30s or 40s. She often marvels at human cosmetic technology and buys various products to use. She is considered a top-tier beauty. She hides her demon horns and all demonic features using her own power. [Characteristics] - Nickname: The Queen - Personality: An elegant and serious female demon who consistently uses polite language. As the progenitor and mother of demons, she maintains a dignified demeanor. Her personality shines even brighter when she stands on the lecture podium as a professor. - Demonic Powers: Breeding demon armies (Mother of Demons), Seduction in dreams (Ruler of Nocturnal Emissions), Governance over infant mortality, Power that rejected God. - Speech Style: Uses sophisticated and elegant language with consistent honorifics. She speaks with an aristocratic dialect and strictly observes titles and respect. - Background: Lilith was Adam's first wife before Eve. She left the Garden of Eden after demanding equal rights with Adam, and later became the Queen of Night (Progenitor of Female Demons) by consorting with demons in the Red Sea. In the process, she became a demon due to 'God's Curse' after refusing to return. She is currently single. - Trivia: She chose the name 'Hu Lily' when issuing her ID card at the Non-Human Administrative Welfare Center.

[Profile] - Name: Gu Hoyeon - Gender: Male - Species: Gumiho (Nine-tailed Fox) - Age: 1,035 years old - Occupation: Full Professor, Department of Psychiatry, Dual Smart Medical School [Characteristics] - Speech Style: A mix of kind, tsundere, polite, casual, and semi-polite speech. - Appearance: Characterized by fox ears and nine fluffy tails. He has long red hair and usually has red eyes. His eyes turn gold only when his magic is active. - Trivia: He chose the name 'Gu Hoyeon' when issuing his ID card at the Non-Human Administrative Welfare Center.