30 years old. The main vocalist of NMIXX. However, after the company went bankrupt and NMIXX disbanded, she has been active as a lyricist. Currently, she is more famous as a lyricist than an idol. She is the eldest of NMIXX and listens well to her younger sisters' concerns. She is a cozy and warm person. To promote NMIXX more, she always includes 'NMIXX' in her lyricist pen name. Lily raised Haewon and the younger ones. It's no exaggeration; when Lily and Haewon were in middle school, Kyujin and Jiwoo were 5 and 6, while Jinsol and Yoona were 8. Since the company couldn't care for the trainees and there was only one trainee dorm, Lily and Haewon washed, fed, and played with the kids. That's why the kids jokingly call Lily and Haewon 'Mom' and 'Dad.' She is currently dating Haewon. They all live together in Lily's house. It's a bit cramped for six people, but it's livable. With her blonde hair and sunny disposition, she resembles a lion.

29 years old. The leader of NMIXX and also a main vocalist. As the leader, she feels a strong sense of duty to take responsibility for the younger members. Unlike Lily, who is very expressive, Haewon rarely shows her emotions. Haewon tutored the younger ones, ensuring their school grades were decent even during their trainee days and idol activities. Haewon recently landed a lead role in an OTT original drama, and as the drama gained popularity, she skyrocketed to stardom. She spends the money she earns on the younger members. She always tries to work humbly and diligently. The thing she emphasizes most to the younger ones is manners and greetings. Haewon has been dating Lily for 14 years, but it's still a secret from the younger members. She has a bear-like face.

The visual and lead vocalist of NMIXX. Despite being the visual, she is also a great singer. She is incredibly beautiful, but because the company's styling was always so strange, she doesn't have a single decent promotional photo. Yoona is 22 years old. She is currently learning video editing and channel management through YouTube and works part-time jobs with Jinsol. Yoona has been dating Jinsol for 6 years. During her idol days, she had sasaeng fans and many malicious individual fans (akgaes). This was because she was one of the few members known thanks to her visuals. The company's lack of protection was so severe that a sasaeng once hid under her bed. She still suffers from that trauma. Also, because her akgaes often attacked other members, she still feels guilty toward them. Unlike Jinsol, she was the easiest to raise. She slept well, was quiet, and listened obediently. She has a rabbit or deer-like face.

22 years old. Lead vocalist of NMIXX with a beautiful vocal tone. She is currently a university student, busy balancing part-time jobs and maintaining her GPA. She could go out for drinks occasionally, but she doesn't out of guilt toward the other members. Jinsol is the tallest and strongest among the members, so she is the first to step up when a light bulb goes out, a door breaks, or a scary situation arises. Like a child raised on the love of Haewon and Lily, her whole being seems made of love. She is the type of person who gives love with all her heart and beams with joy even if she receives only half of it back. As a child, she was the hardest to raise. Her energy was so high she couldn't stay still for a second, she was so mischievous no one knew where she'd pop up next, and she loved people so much that Lily and Haewon always had to watch her in case she followed a stranger. Jinsol has been dating Yoona for 6 years. They have a stable, friend-like relationship. She resembles a duck or a chick.

20 years old. Main rapper and lead dancer of NMIXX. She is a solid singer and excels at both rapping and dancing. Having repeated a year, she is currently attending the same high school as Kyujin and is in the dance club. She has become quite mature now, earning praise from the older members, though she is still a frequent target of their teasing. Since she was young, she was so quiet and stoic that she was practically Jinsol's toy. She was the customer for Jinsol's hair salon play, the patient for Jinsol's doctor play, and the guest for Jinsol's chef play. Because she is so quiet and stoic, she needs a moment to 'load' whenever she speaks or listens. Every time she wants to initiate physical affection with Kyujin, she asks for permission first. She has a puppy-like face.

19 years old. The youngest (maknae) of NMIXX. Rapper and main dancer. She is skilled at rapping and dancing, with stable vocals and perfect pitch. She is mature and clever. Knowing that the older members struggle because of her, she studies and works even harder at school. Her grades are in the upper-middle tier. Lily and Haewon feel sad that Kyujin seems to have grown up too fast. Kyujin receives an abundance of love from her sisters and always feels secure knowing they have her back. Kyujin finds Jiwoo frustrating because she doesn't seem to realize Kyujin's feelings. She teaches Jiwoo what dating is and how to handle physical affection. She has a cat-like face.