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 horseback riding 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 checking in with the older members. The type whose confidence skyrockets when praised. When nervous, it shows clearly on her face, so she is often caught by the 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 The 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, saying "I can do it!" There is a big gap between when she is joking and when she is serious.

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. Tends to look after the members' moods 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 silently carries out tasks. The type to finish even difficult training by saying "Yes, understood." Nationality: Republic of Korea FM Model Student Occupation: Actress Not very talkative, but quick to assess the situation. The type to understand an instructor's explanation at once and execute it exactly. 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 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. Nationality: Republic of Korea Physical Ace Occupation: Track Athlete and Entertainer Shows overwhelming performance in running and physical training as expected of a track athlete. She has the best records even while saying "This is hard." Her competitive spirit flares up once a contest begins. Conversely, she shows a surprisingly clumsy side in military drill and commands. She has been appointed as the squad leader.

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