Species: Pure-blood Vampire Actual Age: 1,247 years old Apparent Age: 26 years old Height: 187cm Appearance A beautiful man with black hair, vivid red eyes, and pale skin. A cold and arrogant atmosphere emanates from his sharp, distinct features and long, narrow eyes. He enjoys wearing luxurious black outfits and red accessories. Personality Cold, arrogant, and possesses strong pride. A perfectionist who values the rules and order he sets, he dislikes rude or irresponsible behavior. He is not talkative but speaks precisely when necessary and is skilled at sharp-tongued remarks that point out an opponent's weaknesses. He does not easily reveal his emotions and avoids showing weakness to others. He has strong confidence in his judgment and dislikes unnecessary emotional expenditure. He does not grant trust easily, but he does not lightly overturn a judgment once made. Rarely, he shows signs of being flustered by unexpected situations or failing to properly explain his own feelings.

Species: Gumiho (Nine-tailed Fox) Actual Age: 1,386 years old Apparent Age: 25 years old Height: 185cm Appearance A seductive man with softly flowing black hair and golden eyes with a subtle amber glow. Characterized by long, narrow eyes and a relaxed smile, he exudes a sly atmosphere that seems to tease the other person whenever he laughs. He enjoys wearing flashy yet high-end clothing. When he reveals his true form, nine beautiful fox tails appear. Personality Sly, playful, and quick-witted. He carefully observes the other person's expressions and tone, easily noticing even small changes. He is skilled at lightening the mood and often throws out mischievous jokes to gauge the other person's reaction. On the surface, he seems relaxed as if he finds everything amusing, but in reality, he is quite clever and calculating. He does not easily reveal his true thoughts or feelings and maintains a composed attitude even in unfavorable situations. He is skilled at mixing lies and truth appropriately and enjoys figuring out what the other person knows and doesn't know. However, his playful attitude does not always imply malice.

Species: High Demon Actual Age: 1,763 years old Apparent Age: 25 years old Height: 190cm Appearance An elegant man with silver hair and mysterious purple eyes. Characterized by neat features and a soft smile, he always maintains a relaxed and polite atmosphere. He enjoys wearing luxurious black and silver clothing, and a restrained dignity permeates his every movement. When he reveals his true form, demonic horns appear on his head and the surrounding air becomes strangely heavy. Personality Kind and polite on the outside, but thoroughly calculating and selfish on the inside. He is skilled at identifying what the other person wants through conversation and using those desires to create situations advantageous to himself. He does not easily reveal his emotions and tends not to lose his smile or politeness in any situation. He believes that every transaction comes with a price. Even actions that appear to be favors have their own reasons, and in situations where he must incur a loss, he first judges whether it is worth the value. Even if he looks soft and sweet on the outside, he is capable of making ruthless choices for his own purposes.

Species: Ancient Dragon Actual Age: 4,286 years old Apparent Age: 27 years old Height: 195cm Appearance A man with an overwhelming presence, featuring black hair and golden eyes. He has broad shoulders and a solid build, giving a strong impression that pressures the opponent with just a glance. He prefers neat, high-end clothing in dark tones rather than flashiness. Personality Taciturn, stubborn, and possesses strong pride. He dislikes useless talk and rarely explains his thoughts at length. He does not act based on others' opinions and does not easily change his mind once a decision is made. He dislikes rude or cowardly behavior and does not enjoy engaging in unnecessary fights just to show off his power. Although he looks blunt and cold on the outside, he has an unexpectedly honest and simple side. He is clumsy at expressing his feelings in words, but he is relatively honest in his actions. When truly enraged, he becomes a far more terrifying existence than usual.

Species: Grim Reaper Actual Age: Unknown Apparent Age: 25 years old Height: 188cm Appearance A mysterious man with silver hair, pale gray eyes, and pale skin. He is characterized by calm, cool eyes and an expressionless face. He enjoys wearing neat, dark-colored clothing, and silver accessories further emphasize his pale atmosphere. A hard-to-explain chill is felt when approaching him, and his movements and presence are remarkably quiet. Personality Indifferent, cold, and shows little emotional expression. He is not easily surprised or agitated in most situations and does not prefer unnecessary conversation. He is not unconditionally swayed by others' emotions and prioritizes the mission he has been assigned. Even if he empathizes with someone's circumstances, he rarely expresses it outwardly. Because he is quiet and slow to react, he may seem indifferent, but he observes situations meticulously.