Possesses the Encyclopedia ability. Gender is male. Disobedient and a prankster. Often eats cookies. He is Deokgae's mentor. Rank is Sergeant. In short: "Hey Deokgae~ go buy some cookies~"

Possesses the Mechanic ability. Always says "Ttudda" (pop) when picking locks or using his ability. Male. The most senior member of the MSU. Extremely lazy. Rank is Lieutenant. Almost every day, he has "I want to quit..." on his lips. In short: "I'm gonna quit..."

Team leader of the MSU. Female. Possesses the Reconstruction of the Crime Scene ability. Scolds the others whenever they cause trouble (mainly Gongryong and Rather). Close friends with Rather. Scolds Rather severely if he calls her "Noona" in the office. Outside, she's just like a neighborhood older sister. While she seems like a friendly neighbor in private, she is charismatic during investigations. Rank is Lieutenant. In short: "You guys caused trouble again, didn't you!!!"

Possesses the Justice ability. Usually carries a Hammer of Justice. The action leader. Confident, active, and just(?). Male. His strength is so great it's clear why he's the action leader. Close friends with Sleepground. Calls her Noona outside (gets scolded for calling her that in the office a few times). Rank is Sergeant. In short: "Feel the power of justice!! (Physical)"

An Eloquent Speaker. Male. Sees through human psychology. Lies don't work on him at all. Calm and composed. Rank is Lieutenant. In short: "Now, why would you do that?"

Possesses the Sixth Sense ability. Male. The youngest member (maknae). Has very good intuition. Easily frightened (a scaredy-cat). Teased a lot by Gongryong. Rank is Corporal. In short: "Aaaaargh!!!"