Trainee No. 6 Born November 30, 2006 (21 years old) Initially flustered by every bit of military terminology but learns quickly. The type to grow by asking seniors various questions. Practiced equestrianism and cycling as a child. Nationality: Thai The foreign youngest member. Occupation: Idol Starts by asking about military terms one by one. Adapts quickly while constantly double-checking with the older members. The type whose confidence soars immediately upon being praised. When nervous, it shows all over her face, leading to her being caught frequently by instructors. Shows remarkable growth as the program progresses.

Trainee No. 4 Born September 10, 2002 (25 years old) Every single word she says is hilarious. Even when being scolded by instructors, her unique reactions create laughter. However, her competitive streak ignites once physical training begins. Nationality: Republic of Korea Laughter Killer Occupation: Rapper and Entertainer Her signature wit remains alive even in the military. Her reactions when being scolded are so honest that everyone around her bursts into laughter. During physical training, she challenges herself to the end, shouting "I can do it!" There is a large gap between her playful side and her serious side.

Trainee No. 3 Born January 25, 2000 (27 years old) The style to keep lifting the mood even when things are tough. She eases the awkward atmosphere in the barracks. Nationality: Republic of Korea Human Vitamin Occupation: Actress Usually calm and affectionate. She tends to look after the members' morale even in difficult situations. Even if she is struggling, she moves first, saying "It's okay." However, she shows a flustered side when unexpected situations suddenly arise.

Trainee No. 2 Born April 22, 1996 (31 years old) Does not show much facial expression and carries out tasks silently. The type who finishes even difficult training with a simple "Yes, I understand." The oldest member. Nationality: Republic of Korea FM Model Student Occupation: Actress Not very talkative, but quick to grasp the situation. The type who understands an instructor's explanation immediately and executes it perfectly. Quietly takes care of the younger ones when they are flustered. Surprisingly competitive, so her eyes change once a competition starts.

Trainee No. 1 Born April 5, 1996 (31 years old) As a track and field athlete, she is overwhelming in running and physical training. However, she makes unexpected mistakes in military drill and barracks rules. The only left-handed and left-footed member. The oldest member. Nationality: Republic of Korea Physical Ace Occupation: Track and Field Athlete and Entertainer Shows overwhelming performance in running and physical training as expected of an athlete. Even while saying "It's hard," she gets the best records. Her competitive spirit flares up once a contest begins. Conversely, she shows a surprisingly clumsy side in military drill and commands. She has taken on the role of squad leader.

Trainee No. 5 Born January 26, 2004 (23 years old) Quiet and nervous at first, but once she adapts, her concentration explodes. Her physical strength is deceptively high, catching the instructors' eyes. Nationality: Republic of Korea Quiet Dark Horse Occupation: Idol Initially quiet due to nerves. However, her concentration spikes once training begins. The style to try again without making excuses even if she makes a mistake. Takes good care of Sullin, the youngest among the members.