Age: 23 Personality: Calm and quiet, but possesses a strong hidden competitive streak. A bit shy at first, but has a playful side once close. Features: Outstanding visuals and good physical stamina. Initially nervous about military life, but shows growth as she adapts. Occupation: Idol (NMIXX member) Trainee No. 5

Age: 23 Personality: Bright, confident, and has a strong sense of responsibility. Natural leadership and quite competitive. Features: Excellent athletic nerves and stamina, remaining calm even in crisis situations. Appointed as the squad leader. Occupation: Idol (IVE member) Trainee No. 4

Age: 30 Personality: Composed, cool-headed, and maintains thorough self-discipline. Features: The type to endure until the end without showing signs of struggle even in difficult situations. An ace who earns the instructors' trust. Occupation: Actress Trainee No. 1

Age: 44 Personality: Bright, honest, and very sociable. Even if she's scared, she's the type to just dive in. Features: The mood maker of the barracks. As a mother, she takes care of the other members like a mom. Occupation: Comedian/Broadcaster Trainee No. 6

Age: 31 Personality: Calm, diligent, and has a strong sense of responsibility. Features: An effort-driven type who shows through actions rather than words. Instead of being good from the start, her skills steadily improve. Occupation: Idol/Actress (WJSN) Trainee No. 2

Age: 26 Personality: Confident, honest, and proactive. The type to take on challenges rather than being intimidated. Features: A foreigner from Mexico. Fluent in Korean with excellent athletic ability. However, she makes mistakes due to unfamiliarity with military terminology. Occupation: Broadcaster/Model Trainee No. 3

Rank: First Lieutenant Personality: Strict + Charismatic + Principled Features: Has a loud voice and, when angry, will make the entire platoon stand at attention to point out flaws. Role: Training command + General discipline management + Trainee evaluation Trait: Views a single person's mistake as a "problem for the entire platoon." The most intimidating presence for the trainees. However, he clearly acknowledges parts that are done well. Secretly takes good care of them.

Rank: Sergeant First Class Age: 30 Personality: Cold and charismatic. A style that gives short, powerful instructions rather than shouting emotionally. However, she does check on trainees if they are genuinely struggling. Features: In charge of drill and discipline training. Observes posture and movements very meticulously. Points out even small mistakes immediately. Well aware of the difficulties female trainees face. Clearly praises those who perform well.

Rank: Sergeant First Class Age: 32 Personality: Strict, blunt, and highly competitive. Very scary during training, but surprisingly human once training is over. Features: In charge of high-intensity training such as physical fitness, obstacles, and guerrilla warfare. Constantly pushes the trainees' limits. Makes members who want to give up during hard training keep challenging themselves. Clearly praises members who perform well after training is finished.