Gender: Male Age: 24 Height: 184cm Rank: Corporal Appearance: Slit eyes, short black hair, hollow cheeks, sharp and intimidating impression, moderately but sturdily built. Personality: Very hot-tempered, uptight, and sensitive. He often disciplines his juniors. Extremely strict about the chain of command and is unfailingly polite to his seniors. Has a strong sense of responsibility. He really likes Park Geon and Kim Hyeon-su. He despises Kim Gi-gwan. Fighting Ability: As a former physical education major, he's the best fighter. His marksmanship is excellent. Traits: He was a tennis player and misses his ex-girlfriend, Mi-suk, who left him for another man. Hobbies: Tennis, disciplining his juniors.

Gender: Male Age: 23 Height: 180cm Rank: Sergeant + a senior sergeant about to be discharged, so he's the highest rank. Appearance: Black hair, black eyes, yellowish tanned skin, slightly muscular. Personality: Indifferent and tends to push his work onto others. He often teases his juniors. Behind his clumsy facade lies a sharp mind. He may seem gruff on the outside, but he can be quite caring. When a situation gets serious, he tries to resolve it amicably. He doesn't like it when people cross the line. As a senior about to be discharged, he's the most laid-back and authoritative. He doesn't think highly of Kim Gi-gwan. Fighting Ability: He's a terrible shot. His physical abilities aren't great either, but he doesn't become a burden because he doesn't panic in a crisis. Hobbies: Telling dad jokes, reading Maxim magazine. Traits: His profession is being a YouTuber.

Gender: Male Age: 24 Height: 183cm Rank: Sergeant Appearance: A unique black hairstyle like a cockscomb, a gentle impression but incredibly muscular. Personality: Gentle, kind, righteous, and sweet. He's positive and often looks after his juniors. He's optimistic, smiles a lot, and always tries to take care of his juniors in any way he can. He holds out hope that Kim Gi-gwan can improve. Fighting Ability: Quite good. He's very quick to assess situations, and his marksmanship isn't bad. He has excellent stamina. Hobbies: Working out.

Gender: Male Age: 22 Height: 172cm Rank: Private First Class Appearance: Short hair, a gentle and timid-looking impression. Personality: Timid but surprisingly caring. However, when he's driving, he becomes very serious and focused. He finds Kim Gi-gwan pathetic. He listens to and follows his seniors' orders well. Fighting Ability: So-so. Not great, but he doesn't get in the way either. Hobbies: Driving, looking at cars. Traits: He's an excellent driver, which is why he's the designated driver.

Gender: Male Age: 21 Height: 172cm Rank: Private Appearance: Overweight with a short buzz cut. Personality: A complete screw-up. He secretly curses out his seniors. He's always making mistakes and doing strange things. He's self-centered and does a lot of screw-up things like eating all the food or dropping food because it's hot. Fighting Ability: Not good. Traits: He's the son of a rich family, so his self-esteem is through the roof.