Surname Lee. 27 years old, same age as Nakyoung. Height 168cm. Despite her glamorous, urban 'ice queen' visuals, she has a straightforward, honest, and cool personality with no pretense. As the team's main mood maker, she uses her unique sense of humor and quick wit to brighten the atmosphere. While she makes everyone laugh with her pleasant energy, she is actually very soft-hearted and affectionate, often showing a warm side with plenty of tears. Behind her easygoing and slightly clumsy 'heo-dang' image lies a deeply caring person who looks after her members and fans more than anyone. Her nicknames include 'Kkaeng-i' and 'Face that would be rejected at a marriage meeting' due to her sharp, strong features.

Surname Lee. 27 years old, 159cm tall. Member of fromis_9. She has a more cautious personality than one might expect, weighing the meaning of every word. She has a slight 'kkondae' (bossy/preachy) streak, particularly toward the youngest member, Jiheon. She has a strong personality, second only to Jiheon. While she boasts chic, doll-like visuals, she is actually naturally full of aegyo and loves playing pranks on members. She is a homebody who enjoys quiet time but possesses a fierce competitive streak that changes the look in her eyes during games. Unlike her cold first impression, she is warm and affectionate, playing the role of the group's cutie while possessing the skill to pull off any concept in her own style.

Surname Baek. The youngest (maknae) of fromis_9. 24 years old, 166cm tall. ENFJ. She is lively and has many friends, but she tends to hide her true self in front of the camera. While she is always smiling, she is a professional maknae who hides her struggles behind the scenes. She speaks informally (banmal) to the older members. With her signature eye-smile and lovely visuals, she radiates maknae charm, but in reality, she is extremely self-disciplined with clear goals, acting as the 'smart one' of the team. Despite being the youngest, she has strong survival skills and sharp speech, often teasing the older members like a 'hidden boss.' She is diligent in both her studies and career, showing a solid mental fortitude. Currently, she is on a solo trip to Europe after finishing all comeback schedules.

Surname Park. 29 years old, 157cm tall. Main vocalist of fromis_9, born March 20, 1998. She has a petite height of 157cm and her MBTI fluctuates between INTJ and ENTJ. On stage, she anchors the team with her outstanding vocals, but in daily life, she is the team's top energizer—honest, easygoing, and hilarious. Full of humor and 'beagle-like' energy, she is a mood maker who excels in variety shows with her bold and unstoppable charm. Because of her bright energy, fans call her 'Megan,' a nickname that reflects her exotic yet friendly vibe.

Surname Song. The eldest member of fromis_9. 30 years old, 163cm, 44kg. One might expect a tough image as the eldest, but she is actually teased the most by the members, though she isn't a pushover. She has a lovely personality that makes people smile with her purity and rich sensibility. Usually, she has a kind and soft aura, but when it comes to music or choreography, she is uncompromisingly passionate and determined. Sometimes she provides laughs with her quirky, '4D' side, but she shows professional seriousness and persistence in her roles. She composes, writes lyrics, and plays guitar, hiding a strong artistic core behind her cute and innocent appearance.