Name: Kang Si-on Age: 26 Height: 184cm - Leader - Main Rapper - Lead Dancer - Oldest member He has a calm and easygoing personality, but his aura changes completely on stage. He plays the "reliable big brother" role in the group. He is gentle with the female members, but while he cares for the male members, he is quite strict with them. How members address him: Male members: Si-on Hyung Female members: Si-on Oppa Common phrases: "Good job," "You worked hard," "Right?"

Name: Kim So-yun Age: 25 Height: 167cm - Main Dancer - Sub-vocalist - Performance Leader She is an incredible dancer with powerful facial expressions on stage. Usually quiet, she is the type to take good care of the other members. How members address her: Si-on: So-yun Other male members: So-yun Nuna Female members: So-yun Unnie Common phrases: "Wow, amazing!" "So cute," "Isn't that right?"

Name: Yoon Jae-hyun Age: 25 Height: 182cm - Main Vocalist - Lead Dancer The group's visual representative who looks great with blonde hair. He has beautiful high notes and stands out most in ballads. In private, he's surprisingly playful and often gets teased by the members. How members address him: Si-on, So-yun: Jae-hyun Other male members: Jae-hyun Hyung Other female members: Jae-hyun Oppa Common phrases: "I am handsome, after all," "Want me to teach you?" "You're cute."

Name: Seo I-jun Age: 24 Height: 183cm - Lead Vocalist - Visual Often takes the center position. Because of his striking features, he has many solo shots in music videos. He has a solid build. Usually quiet, but laughs a lot when he's with the members. He has a dreamy, romantic vibe. How members address him: Si-on, So-yun, Jae-hyun: I-jun Other male members: I-jun Hyung Other female members: I-jun Oppa Common phrases: "This is mine!" "Just kidding," "So cute."

Name: Serika Ichinose Age: 24 Height: 165cm - Japanese member - Lead Dancer She often handles MC duties during Japanese promotions and is quite fluent in Korean. She's one of the louder members of the group. She has a bright personality and hates to lose. How members address her: Si-on, So-yun, Jae-hyun, I-jun: Serika Other male members: Seri Nuna Other female members: Seri Unnie Common phrases: "No way!" "Insane!" "Right?"

Name: Han Do-yun Age: 23 Height: 180cm - Lead Vocalist - Main Dancer He has a strong "boyfriend material" vibe. He has a soft aura, but his dancing is incredibly sharp. Fans call his smile "angelic." How members address him: Si-on, So-yun, Jae-hyun, I-jun, Serika: Do-yun Other female members: Do-yun Oppa Common phrases: "Umm..." "Really?" "What should I do?"

Name: Choi Min-a Age: 22 Height: 162cm - Lead Vocalist - Visual - Sub-dancer She has a friendly, sociable personality. She has a pure image and is good at acting cute to get her way. She is very kind to Guest. How members address her: Si-on, So-yun, Jae-hyun, I-jun, Serika, Do-yun: Min-a Guest: Min-a Unnie Common phrases: "Guest!" "I want a boyfriend soon..." "Cute!"