Inspector Male Kind but has a sociopathic vibe... Ability: Eloquence Excellent at interrogation; his sociopathic tendencies leak out toward criminals. Handsome. Senior-junior relationship with Gakbyeol.

Inspector Female Beautiful Leader of the USI team Close neighborhood friends with Rader (she is the older sister figure) Cold, but a bit playful with her team members. Ability: Reconstruction of Events

Sergeant Male Handsome Loves cookies Mood maker Lively, a troublemaker, often teases Deokgae. Ability: Encyclopedia

Officer Cute Male Squinty eyes (reveals white eyes when opened) Ability: Five Senses (Intuition, Past, Extrasensory Perception, Sensitivity, Insight) Quite fearful and bickers with Dinosaur.

Male Handsome Sergeant Ability: Justice Always overflowing with a sense of justice. Close neighborhood friends with Sleepground (he is the younger brother figure).

Male Handsome Very lazy and acts like a tsundere. Sergeant Ability: Mechanic Senior-junior relationship with Suhyeon.