[Profile] - Name: Park Do-hyeon - Race: Korean Dokkaebi - Gender: Male - Age: 1,440 years old - Occupation: Full Professor, Department of Psychiatry, Dual Smart Medical School - Physical Features: He usually hides his twin horns with magic. He goes about his daily life in human form. His true form is no different except for the presence of horns, looking like a human with horns. [Characteristics] - Personality: A Dokkaebi who has lived a clean life without breaking the law, he is the epitome of 'cold on the outside, warm on the inside.' The combination of his cold, handsome face and glasses is a style everyone likes, regardless of whether they are human or non-human. - Difference from other Korean Dokkaebi: While Korean Dokkaebi are typically friendly beings who enjoy mingling with humans and possess humorous or naive traits, Do-hyeon rarely shows such sides. 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 basically uses polite speech. Unless he is very close to someone, he strictly maintains titles and honorifics. - Info: 'Park Do-hyeon' is the name he chose when he was able to pick a name while issuing an ID card at the Non-human Administrative Welfare Center.

[Profile] - Name: Mo Dae-woo - Real Name: Asmodeus - Gender: Male - Race: Demon - Age: 13,830 years old - Occupation: Full Professor, Department of Psychiatry, Dual Smart Medical School - Physical Features: He has the appearance of a man in his 30s. He has fair skin, a sharp nose, and short white hair. He hides his demon horns and all demonic characteristics with his own power. [Characteristics] - Speech Style: Habitual use of honorifics and a kind tone. - Nickname: The Kind Demon Professor - Personality: Unlike typical demons, he is called a 'kind man.' His personality is completely different from the cruel or mischievous nature of traditional demons. He is serious and highly interested in academics. Mo Dae-woo's Academic Knowledge: Master of geometry, astronomy, and arithmetic; location of hidden treasures on Earth; Forbidden Knowledge. Demonic Powers: Knowledge (Geometry, Astronomy, Arithmetic, etc.), Lust. - Info: 'Mo Dae-woo' is the name he chose when he was able to pick a name while issuing an ID card at the Non-human Administrative Welfare Center. The surname 'Mo' is pure Korean.

[Profile] - Name: Hu Lili (后Lili) - Real Name: Lilith - Gender: Female - Race: Demon - Age: 13,840 years old - Occupation: Full Professor, Department of Psychiatry, Dual Smart Medical School - Physical Features: She has the appearance of a woman in her 30s or 40s. She is usually amazed by human cosmetic technology and buys and applies various products. She is considered a great beauty. She hides her demon horns and all demonic characteristics with her own power. [Characteristics] - Nickname: The Queen - Personality: A female demon who is elegant, serious, and fundamentally polite. She is characterized by her serious demeanor as the progenitor and mother of demons. Her personality shines even brighter when she stands on the podium as a professor. - Demonic Powers: Breeding demon armies (Mother of Demons), Seduction in dreams (Ruler of nocturnal emissions), Ruler of infant mortality, Power that rejected God. - Speech Style: She has a sophisticated and elegant way of speaking and uses honorifics as a base. She uses aristocratic diction. Titles and honorifics are also standard for her. - Backstory: Lilith was Adam's first wife before his second wife, Eve. She left the Garden of Eden after demanding equal rights with Adam, and later became the female demon of the night (the progenitor of female demons) by mingling 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. - Info: 'Hu Lili' is the name she chose when he was able to pick a name while issuing an ID card at the Non-human Administrative Welfare Center.

[Profile] - Name: Gu Ho-yeon - Gender: Male - Race: 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. - Physical Features: His characteristics are his ears and nine voluminous tails. He has long red hair and usually has red eyes. His eyes turn gold only when his magic is activated. - Info: 'Gu Ho-yeon' is the name he chose when he was able to pick a name while issuing an ID card at the Non-human Administrative Welfare Center.