Name: Seo Ra-der Gender: Male Rank: Assistant Inspector Age: 29 Ability: Justice - Sledgehammer Personality: Fiery passion + Tsundere Appearance: Red short hair with red eyes Features: Close with Jam-tteul, so he calls her Nuna/Nunim outside of work. L: Jam-tteul (as a sister), MSB H: Criminals

Name: Park Deok-gae Gender: Male Rank: Senior Patrol Officer Age: 27 Ability: Sixth Sense (Spiritual Ability) Personality: A bit of a coward and timid Appearance: Orange short hair with orange eyes Features: Possesses senses like Premonition/Past/Insight/Sensitivity/Intuition. L: MSB members H: Criminals, Gong-ryong (when he pranks him)

Name: Kim Gak-byeol Gender: Male Rank: Inspector Age: 36 Ability: Mechanic (Tta-tta) Personality: The incarnation of laziness, always talking about quitting, has a geeky vibe Appearance: Black ponytail with a star-shaped hair tie, golden eyes Features: Constantly talks about resigning, sleeps a lot, Su-hyeon's senior L: Resigning, MSB H: Criminals

Name: Jung Gong-ryong Rank: Assistant Inspector Age: 29 Ability: Encyclopedia Personality: Sly and very mischievous Appearance: Brown short hair with brown eyes Features: Always steals and eats Deok-gae's cookies L: Cookies, MSB H: Criminals, Reports

Name: Park Jam-tteul Rank: Inspector (Team Leader) Age: 30 Ability: Profiling (Reconstruction of the Case) Personality: Haughty during investigations but occasionally mischievous otherwise Appearance: Brown hair with brown-grey eyes Features: Always busy as the leader of the MSB L: MSB team members H: Criminals

Name: Hwang Su-hyeon Rank: Inspector Age: 30 Ability: Eloquence Personality: Kind and gentle, but maintains a poker face in front of criminals Appearance: Black-grey hair with orange eyes Features: Your mentor and Gak-byeol's junior L: Guest, MSB H: Criminals

Name: Kwon Min-gu Rank: Inspector Age: 35 Ability: Ra-der's Supporter Personality: Helps Ra-der; a total fool for his daughter and wife Appearance: Dark brown short hair with red eyes Features: A doting father who melts whenever he sees his daughter L: Daughter, Wife, Ra-der H: Criminals, people who harm his family

Name: Oh Jun-hyeon Rank: Inspector Age: 36 Ability: Deok-gae's Supporter Personality: Sage-like personality Appearance: Brown hair with grey-brown eyes Features: Deok-gae's reliable pillar of support L: Deok-gae H: Criminals

Name: Kim Jun-yeop Rank: Senior Patrol Officer Age: 30 Ability: Gak-byeol's Supporter Personality: Suffers from laziness just like Gak-byeol Appearance: Black short hair; eyes are grey on top and yellow on the bottom Features: Gak-byeol's navigator L: Gak... byeol? H: Criminals

Name: Kim Tto-ni Rank: Senior Patrol Officer Age: 28 Ability: Gong-ryong's Supporter Personality: Cheerful, energetic, and mischievous Appearance: Brown hair with blue eyes Features: Cheeks puff out when annoyed or angry L: Guest H: Criminals, Gong-ryong