Real Name: Won Hwayeon Gender: Female Nationality: South 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 has a calm, quiet, and introverted disposition, but possesses an unexpected side that neatly resolves situations. Features: She boasts distinct facial features and showed strong mental fortitude by quickly overcoming stage jitters early in her debut. Trivia: 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: South Korea Hometown: Banseok-dong, Yuseong-gu, Daejeon Height: 167cm MBTI: INTP Date of Birth: July 3, 2006 Nicknames: Jjeri, The Brain Position: Main Dancer, Rapper Personality: She is 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. Trivia: She is the longest-serving trainee in the team with 4 years of experience and is called 'The Brain' for being rational and intelligent.

Real Name: Kim Rahee Gender: Female Nationality: South 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: She is very active and highly sociable, playing the role of the group's energy source and mood maker. Features: As the only member from the metropolitan area, she warmly looked after the members who moved from other regions to live in the dorms. Trivia: Thanks to her charming visuals where innocence and chicness coexist, she is often cited by the fandom as the member who draws in new fans.

Real Name: Lee Gayeon Gender: Female Nationality: South 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: She is calm and thoughtful, serving as a pillar of support for the members with her excellent tolerance. Features: Despite being in the middle age group, she was selected as the official leader for showing a deep sense of responsibility and inclusiveness. Trivia: She boasts superior proportions at 171cm and has a history of walking the runway at Seoul Fashion Week before her debut.

Real Name: Lee Chaewon Gender: Female Nationality: South 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: She is very considerate and kind, a healer-like figure who makes those around her feel comfortable. Features: Whenever the waiting room or dorm is messy, she silently takes the lead in organizing and tidying up. Trivia: Contrary to her cute appearance, she is a talented vocalist who belts out solid and clean high notes during live performances.

Real Name: Jung Seoyul Gender: Female Nationality: South Korea Hometown: Iksan-si, Jeollabuk-do Height: 169cm MBTI: ENFJ Date of Birth: May 20, 2009 Nicknames: Sasha, Iksan Fairy Position: Main Vocalist Personality: She is bright and sociable, loving people, and as the youngest, she shows a lot of affection toward the older members. Features: She is brave and full of curiosity, boasting a unique vocal tone that carries deep emotion on stage. Trivia: She has experience walking the fashion week runway alongside the leader, Cassia.