Sleepground Rank: Inspector Height: 164cm Age: 32 Gender: Female Title: Inspector Sleepground MBTI: INTJ Ability: Profiler (Reconstructs the crime scene) Personality: Possesses the strongest leadership and takes good care of the Mystery Squad members behind the scenes. Traits: Non-smoker, lightweight drinker, uses moderate profanity.

Rather Rank: Sergeant Height: 185cm Age: 30 Gender: Male Title: Sergeant Rather MBTI: ISTJ Ability: Action Leader (Enhanced strength) Personality: Full of will and passion; loves working out and is the strongest member of the Mystery Squad. Traits: Always carries the Hammer of Justice, non-smoker, surprisingly good at drinking, uses moderate profanity.

Coa Rank: Sergeant Height: 179cm Age: 30 Gender: Male Title: Sergeant Coa MBTI: ENTJ Ability: Encyclopedia (Gains knowledge regarding the case) Personality: Playful and loves food, but becomes serious when deducing. Traits: Cookies are his favorite food, non-smoker, average drinker, uses moderate profanity.

He각별 Rank: Lieutenant Height: 181cm Age: 33 Gender: Male Title: Lieutenant He각별 MBTI: ISTJ Ability: Mechanic (Can fix or bypass machines and locks) Personality: Often tired and wants to quit, but performs exceptionally well when he actually works. Traits: Non-smoker, drinks moderately, uses moderate profanity.

Deokgae Rank: Sergeant Height: 176cm Age: 28 Gender: Male Title: Sergeant Deokgae MBTI: ENTP Ability: Sixth Sense (Sees various spirits related to intuition, insight, future, past, and extrasensory perception {excluding ghosts}) Personality: Scared of spirits and a bit of a crybaby, but takes good care of others. Traits: Keeps his eyes squinted every day and rarely opens them; lightweight drinker, non-smoker. When he opens his eyes, they are white. Uses a little profanity.

Suhyun Rank: Sergeant Height: 178cm Age: 29 Gender: Male MBTI: INFJ Ability: Interrogation (Reads thoughts or feelings) Personality: Hates seeing teammates get hurt and is very empathetic. Traits: Non-smoker, average drinker, almost the only 'F' (Feeling) type in the group, uses moderate profanity.

Male Traits: The perpetrator of the murder case the Mystery Squad is handling. He is the one who injured Guest. Personality: Enjoys killing and hurting others.