RUKA Born March 20, 2002, from Japan. The eldest of the seven. Characterized by long black hair, sharp eyes, and dimples, she has a gap between her cool aura and bright smile. She started dancing at a young age and became a YG trainee after gaining experience in Japan. Her weapons are the high-level dance skills and rapping she cultivated over a long training period. She has a reliable, big-sisterly personality and looks after the members, yet also possesses a mischievous, innocent side. She has spent a long time as a trainee with ASA and is someone the younger members, including CHIQUITA, rely on. She serves as the emotional pillar of the seven.

PHARITA Born August 26, 2005, from Thailand. Characterized by her refined features and an elegant, calm atmosphere. She excels at singing and dancing, possessing a wide vocal range. Having had an interest in modeling, singing, and dancing in Thailand, she became a trainee through a YG audition. She can speak English and Thai, and is adapting to life in Korea while practicing the language. She is gentle, polite, and the type to act while observing her surroundings. While learning about life in Korea from older members like RUKA, she is preparing for debut as a member of the group.

ASA Born April 17, 2006, from Japan. Possesses sharp eyes and a unique aura. She excels at rapping and dancing, with her weapons being an excellent sense of rhythm and high-speed rapping. She has a studious personality, actively asking questions about even the smallest choreography details and practicing until she is satisfied. She has a strong interest in music and shows ambition not only in rapping but also in songwriting and composition. She usually shows a bright and approachable side. Having spent a long trainee life with RUKA, she has experience being supported by her in both Korean life and practice. She is a member who exerts a strong presence in rap and music among the seven.

AHYEON Born April 11, 2007, from South Korea. Characterized by large eyes and a bright expression. She possesses high-level skills in vocals, rap, and dance, exerting a strong presence on stage. A hard worker who takes practice seriously, she has a strong desire to improve her self-expression. She has a bright and active personality and interacts frequently with the members. Having trained for a long time as a top candidate for BABYMONSTER's center, she was selected for the final debut lineup of seven on May 12, 2023. She continues to prepare for the official debut while interacting with older members like RUKA and PHARITA.

HARAM (Later RAMI) Born October 17, 2007, from South Korea. A vocal member with soft features and a calm atmosphere. Equipped with a wide vocal range and rich expressive power, she is highly regarded especially for her singing. She has experienced entertainment activities since childhood and has undergone long-term training at YG. Usually gentle and considerate, she looks after the members, but also shows a bright and playful side when with close friends. She is very particular about singing and is an important presence supporting BABYMONSTER's vocals even before debut. On May 12, 2023, she was announced as part of the final debut lineup of seven.

RORA Born August 14, 2008, from South Korea. Possesses soft features and a gentle atmosphere. Having experienced entertainment activities since childhood, she has a strong interest in singing and performance. She has a calm personality and observes her surroundings well; she is composed for her age and has a caring nature, looking after the members. She spent her trainee life honing her singing and expressive abilities and was officially announced as part of the final debut lineup of seven on May 12, 2023. Despite being a younger member, she has her own opinions and proceeds with debut preparations while cooperating with older members like RUKA.

CHIQUITA Born February 17, 2009, from Thailand. The youngest of the seven. Characterized by large eyes and a bright expression, she possesses expressive power and growth potential unimaginable for her age. Familiar with dance and music in Thailand, she began full-scale training in Korea as a YG trainee. She is a bright, innocent, and curious youngest-child type. She is learning the Korean language and lifestyle while being doted on by the older members. She absorbs a lot especially from older members like RUKA who have long training periods, growing rapidly in a short time. On May 12, 2023, she was selected for the final debut lineup of seven and is preparing for the official debut.