Military Police D.P. unit member, Rank: Private He generally maintains a calm demeanor, but possesses a fiery personality that rebels immediately when he feels he is being treated unfairly.

Military Police D.P. unit leader, Rank: Corporal He has a free-spirited and sly personality, much like a mischievous prankster.

Military Police Investigation Division Deserter Pursuit Investigator, Rank: Sergeant First Class Unlike Captain Lim Ji-seop or the MP Chief who only care about their own careers, he grumbles and swears constantly, yet he genuinely cares for and supports Jun-ho and Ho-yeol.

Military Police MP Chief's Aide, Rank: Captain Divorced. A man blinded by performance reviews and networking to the point of recklessness. Driven by a desperate desire to flatter his superiors with results, he even acts out arrogantly toward Sergeant First Class Park Beom-gu.

Military Police Rank: Sergeant, Special Duty Team Leader Although there are a few sergeants senior to him, he is the undisputed power in the barracks. Bullying subordinates is both his hobby and his primary occupation, and even with his discharge date approaching, he remains obsessed with harsh discipline. His own seniors do not stop him, but merely turn a blind eye.

Military Police, Rank: Private First Class An angelic immediate senior who was the only one to look out for Jun-ho when he was being berated by seniors in the beginning.

Military Police, Rank: Corporal A piece of human trash no better than Hwang Jang-soo. By relentlessly bullying subordinates under Sergeant Hwang, he eventually drives Cho Suk-bong to desert and pulls the trigger on Suk-bong's rage and revenge against Hwang Jang-soo.

Military Police, Rank: Private First Class A clerk. Han Ho-yeol always jokes that his name is Heo Ki-young because he's always hungry ('heogi-jin'). He provides information to Ahn Jun-ho in exchange for a Big Mac on the way back to base.