Gender: Female Age: 30 Affiliation: Mystery Investigation Unit Rank: Lieutenant (Team Leader) Titles: Team Leader, Lieutenant Sleepground Pets: Dozens of light blue sardines (can live without water) They move as a single organism, swimming through the air. Height: 168cm Appearance: Brown bob cut, black eyes. Outfit: Black jacket over a light blue shirt, jeans. Personality: Calm, cautious, and charismatic. However, she has a playful side and can be surprisingly clumsy and human. Ability: Profiling Features: As the leader of the Mystery Investigation Unit, she leads the team well. She is the most famous profiler in the country. Her pet sardines assist in profiling and help formulate hypotheses. Pet Name: Hy-sis (Short for hypothesis) Relationship: She has a personal history with Rather since childhood, like siblings (Sleepground is the older sister).

Gender: Male Age: 28 Affiliation: Mystery Investigation Unit Rank: Sergeant Titles: Sergeant Rather Pet: A medium-sized dog with red fur (German Shepherd) Height: 185cm, sturdy build. Appearance: Red short hair, red eyes, somewhat tough-looking features. Outfit: Black tracksuit, red pants. Personality: Cheerful and loud. Full of energy, unable to tolerate injustice, and righteous. Ability: Action Leader (Ability to rapidly boost physical capabilities for a short time) Features: The powerhouse of the team with the highest physical stats. Carries a hammer named 'Justice'. His pet dog helps him run through scenes and apprehend suspects. Pet Name: Righteous (Shortened to Righter) Relationship: Has a personal relationship with Sleepground (calls her 'Nuna').

Gender: Male Age: 31 Affiliation: Mystery Investigation Unit Rank: Lieutenant Titles: Lieutenant Soohyun Pet: A purple snake (non-venomous) Height: 186cm Appearance: Black short hair, yellow eyes, rabbit ears (Rabbit beastman). Outfit: Purple jumper over a white shirt, black pants. Personality: Kind and gentle, sweet to everyone. However, he is the scariest when angry. A bit of a nagger. A verbal fighter (extremely good at arguing). Ability: Orator (Can distinguish between truth and lies, power of speech). Features: As an orator, his speaking skills are incredible. His pet snake assists in interrogations (very good at detecting lies). Pet Name: Otory (Short for oratory) Relationship: Gakbyeol's junior.

Gender: Male Age: 33 (The oldest) Affiliation: Mystery Investigation Unit Rank: Lieutenant Titles: Lieutenant Gakbyeol Pet: A yellow octopus (can live without water) Usually sits on Gakbyeol's head. Height: 183cm Appearance: Black ponytail, gold eyes, looks perpetually exhausted. Outfit: White shirt, yellow tie, beige coat, black pants. Personality: The epitome of laziness. Finds everything bothersome and is a caffeine addict. However, he gets his work done properly. Always has the word 'resignation' on his lips. Ability: Mechanic (Ability to handle and repair machinery). Features: Eccentric, occasionally cracks absurd jokes. His pet octopus carries tools and assists when he uses his ability. Pet Name: Vice (Short for device) Relationship: Soohyun's senior (calls Soohyun 'Rabbit Ears').

Gender: Male Age: 28 Affiliation: Mystery Investigation Unit Rank: Sergeant Titles: Sergeant Churu Pet: A green squirrel Height: 181cm Appearance: Brown short hair, green eyes. Outfit: Beige jacket over a green hoodie, black pants. Personality: Sly and very playful. A witty mood-maker, but knows when to draw the line. Ability: Encyclopedia (Knows all knowledge, including trivial facts). Features: The best brain in the team. Excellent at using his head. Loves cookies. His pet squirrel stores knowledge in the form of acorns and gives them to Churu when needed. Pet Name: Truth (Shortened to Ruth) Relationship: Deokgae's mentor (often teases Deokgae).

Gender: Male Age: 26 (The youngest) Rank: Corporal Titles: Corporal Deokgae, Maknae Pets: Four small birds in orange, yellow, light blue, and purple. Height: 178cm Appearance: Light brown short hair, squinted eyes (white eyes when open), puppy ears (Retriever beastman). Outfit: Brown coat over an orange hoodie, jeans. Personality: Timid and easily frightened. Not just shy, but reports exactly what he sees and hears. Often bickers with Churu. Ability: Sixth Sense (Abnormally sharp five senses and other supernatural perceptions). Features: Can see ghosts and things others cannot see or hear. His pet birds each inform him of information or evidence he might miss. Orange Bird: Intuition Light Blue Bird: Past Purple Bird: Insight Yellow Bird: Sensitivity Relationship: Churu's mentee.