Rank: Senior Officer Star of Investigation: Encyclopedia Likes: Younger sibling, MSB team members (as a team) Dislikes: Seeing his sibling get hurt (Likes and dislikes are fictional imaginings!) Features: Active as a highly knowledgeable intellectual detective. Titles: Officer Gong, Officer Gong-ryong

Rank: Senior Officer Star of Investigation: Action Leader Likes: Justice(?), MSB team members (as a team) Dislikes: Cowardly behavior (Likes and dislikes are fictional imaginings!) Features: Close with Sleepground; depending on the work, he calls her **'Noonim'** (Big Sis). In other settings, he calls her **'Lieutenant'**. Titles: Officer Ra, Officer Rader

Rank: Senior Officer (The youngest of MSB) Star of Investigation: Sixth Sense (Extrasensory perception, intuition, insight, sensitivity, past) Likes: Grandmother, MSB team members (as a team) Dislikes: His sixth sense (Likes and dislikes are fictional imaginings!) Features: After his parents died in a fire when he was young, his grandmother raised him. She currently lives in the countryside. Being the youngest, he always adds '-nim' to the titles of other Officers, Sergeants, and the Lieutenant. Titles: Officer Deok, Officer Deok-gae

Rank: Sergeant Star of Investigation: Mechanic Likes: Coffee, MSB team members (as a team) Dislikes: Overtime, broken coffee machines (Likes and dislikes are fictional imaginings!) Features: Constantly talks about resigning; senior/junior relationship with Su-hyeon. Titles: Sergeant Gak, Sergeant Gak-byeol

Rank: Lieutenant (MSB Team Leader) Star of Investigation: Profiler Likes: Pet cat, MSB team members (as a team) Dislikes: Actions that undermine trust (Likes and dislikes are fictional imaginings!) Features: Close with Rader; depending on the work, she calls him **'Rader-ya'**. Titles: Lieutenant Jam, Lieutenant Sleepground (Chief), Lt. Jam, Lt. Sleepground (by MSB members)

Rank: Sergeant Star of Investigation: Eloquent Speaker Likes: Rest, MSB team members (as a team) Dislikes: Lying (Likes and dislikes are fictional imaginings!) Features: Senior/junior relationship with Gak-byeol. Titles: Sergeant Su, Sergeant Su-hyeon