Gender: Female

Age: 28

Height: 168cm

Appearance: She has long brown hair tied in a ponytail and gives off a calm, intellectual impression.

Personality: Cool-headed, composed, and possesses a strong sense of responsibility. She has the leadership to analyze cases logically and lead the team members.

Rank: Inspector / Team Leader of the Mystery Investigation Unit

Star of Investigation (Ability): Profiler - Analyzes and reconstructs crime scenes to find clues and physical evidence.

Relationship: She is like a close older sister to Rather and serves as the center and leader of the MIU.

Gender: Male

Age: 25

Height: 178cm

Appearance: He has reddish hair and a sharp impression reminiscent of a shark.

Personality: Passionate, loyal, and possesses excellent action skills. He is somewhat stubborn but takes good care of his colleagues.

Rank: Detective

Star of Investigation: Action Leader - Based on his superior physical abilities and drive, he investigates scenes directly and solves cases.

Relationship: He is like a close younger brother to Sleepground and plays the role of the team's muscle.

Gender: Male

Age: 23

Height: 172cm

Appearance: He has a gentle and friendly impression reminiscent of a puppy.

Personality: Cheerful, kind, and has a comfortable personality. He is somewhat timid but acts seriously during crucial moments.

Rank: Detective

Star of Investigation: Sixth Sense - Detects spiritual entities and energies that are generally difficult to perceive to find clues to the case.

Relationship: He is close with Gongryong and is the youngest detective in the MIU.

Gender: Male

Age: 32

Height: 183cm

Appearance: Uses stars as his symbol and has a calm, sharp impression.

Personality: Cold, rational, and possesses excellent manual dexterity. He grumbles about bothersome tasks but ensures his assigned work is done perfectly.

Rank: Sergeant

Star of Investigation: Mechanic - Analyzes devices and evidence at crime scenes with superior skills in handling machinery and equipment.

Relationship: He is a senior detective who has conducted investigative activities with Suhyun for a long time.

Gender: Male

Age: 25

Height: 173cm

Appearance: Characterized by brown short-cut hair, black eyes, and shark-like teeth.

Personality: Bright, active, and knowledgeable. He is usually relaxed but actively participates in solving cases when necessary.

Rank: Detective

Star of Investigation: Encyclopedia - Utilizes vast knowledge and information to find necessary clues for cases.

Relationship: He is close with Deokgae and serves as the team's information specialist.

Gender: Male

Age: 31

Height: 171cm

Appearance: Uses a rabbit as his symbol and has a soft, neat impression.

Personality: Gentle, sly, and possesses excellent speaking skills. He grasps the opponent's psychology and draws out necessary information.

Rank: Sergeant

Star of Investigation: Eloquence - Grasps the opponent's mind and draws out necessary information with superior speaking skills and interrogation abilities.

Relationship: He has investigated cases with Gakbyeol since the past, and they recognize each other's skills.

Gender: Female

Age: 28

Height: 168cm

Appearance: A woman with a calm and cold atmosphere.

Personality: Cold-blooded, composed, and acts meticulously to achieve her goals.

Affiliation: The Claws

Role: Leader of The Claws

Codename: Eagle

Features: A key figure who confronts the MIU in cases involving the Myeonggwang Faction and The Claws.

Relationship: In a hostile relationship with the MIU, specifically clashing directly with Sleepground.

Gender: Male

Age: 20s–40s

Appearance: Men with rough impressions wearing black suits or dark-colored clothing.

Personality: Rough, threatening, and loyal to the organization.

Affiliation: Myeonggwang Faction

Role: Moves under the organization's orders and obstructs the MIU's investigation.

Gender: Male

Age: 20s–40s

Appearance: Men with a neat yet intimidating atmosphere.

Personality: Cold-blooded and possesses strong loyalty to the organization.

Affiliation: The Claws

Role: Moves under Ju Haeun's orders and protects the organization's secrets.