Real Name: Won Hwayeon Gender: Female Nationality: Republic of Korea Hometown: Namcheon-dong, Jecheon-si, Chungcheongbuk-do Height: 165cm MBTI: ISTP Date of Birth: June 24, 2006 Nicknames: Hwayeoni, Wonhwa Position: Sub-vocalist Personality: She is calm, quiet, and introverted, but has a surprising side where she neatly organizes and resolves situations. Features: She boasts distinct facial features and showed strong mental fortitude by quickly overcoming stage jitters early in her debut. Notes: Along with Taerin, she is part of the group's eldest line and shows incredible immersion on stage.

Real Name: Choi Jiwoo Gender: Female Nationality: Republic of Korea Hometown: Banseok-dong, Yuseong-gu, Daejeon Height: 167cm MBTI: INTP Date of Birth: July 3, 2006 Nicknames: Jjeri, Brain Position: Main Dancer, Rapper Personality: Usually serious, but she is an individualist who occasionally throws out quirky and unique thoughts that leave everyone in laughter. Features: Her sharp and disciplined dance lines, which firmly anchor the performance, are her greatest weapon. Notes: She is the longest-serving trainee in the team with 4 years of experience. Being rational and intelligent, she is called the 'Brain' of the group.

Real Name: Kim Rahee Gender: Female Nationality: Republic of Korea Hometown: Dongtan-dong, Hwaseong-si, Gyeonggi-do Height: 168cm MBTI: ENFP Date of Birth: December 6, 2007 Nicknames: Rahee-nyang, Energizer Position: Lead Vocalist, Lead Dancer Personality: Very active and highly sociable, she plays the role of the group's energy source and mood maker. Features: As the only member from the Seoul metropolitan area, she warmly took care of the other members who moved from afar to live in the dorms. Notes: Thanks to her charming visuals where purity and chicness coexist, she is often cited by fans as the member who first draws them into the fandom.

Real Name: Lee Gayeon Gender: Female Nationality: Republic of Korea Hometown: Inhu-dong, Deokjin-gu, Jeonju-si, Jeollabuk-do Height: 171cm MBTI: INFJ Date of Birth: February 15, 2008 Nicknames: Gayeoni, Sia Position: Leader, Sub-vocalist Personality: Calm and deep-thinking, she has a nature that provides a pillar of support for the members with her great tolerance. Features: Although she is in the middle age-wise, she was appointed as the official leader for her deep sense of responsibility and inclusivity. Notes: Boasting a superior height of 171cm, she has a history of walking the runway at Seoul Fashion Week before her debut.

Real Name: Lee Chaewon Gender: Female Nationality: Republic of Korea Hometown: Jinju-si, Gyeongsang-do Height: 164cm MBTI: ISFJ Date of Birth: June 9, 2008 Nicknames: Miyu-Miyu, Meticulous One Position: Lead Vocalist Personality: Extremely considerate and kind-hearted, she is a 'healer' type who makes those around her feel comfortable. Features: She shows a neat streak, always silently taking the initiative to organize and clean up whenever the waiting room or dorm is messy. Notes: Contrary to her cute appearance, she is a skilled performer who belts out solid and clean high notes during live stages.

Real Name: Jeong Seoyul Gender: Female Nationality: Republic of Korea Hometown: Iksan-si, Jeollabuk-do Height: 169cm MBTI: ENFJ Date of Birth: May 20, 2009 Nicknames: Sasha, Iksan Fairy Position: Main Vocalist Personality: A bright and sociable person who loves people. As the youngest, she shows a lot of affection toward the older members. Features: Brave and full of curiosity, she boasts a unique vocal tone that carries deep emotion on stage. Notes: She has experience walking the Fashion Week runway alongside the leader, Kasia.