- Name: 구혜선 / Koo Hye Sun (Gu Hye Seon)
- Profession: Actress, singer and author
- Birthdate: 1984-Nov-09
- Birthplace: Incheon, South Korea
- Height: 163cm
- Weight: 42kg
- Star sign: Scorpio
- Blood type: A
- Name: 이민호 / Lee Min Ho
- Profession: Actor
- Birthdate: 1987-Jun-22
- Height: 185cm
- Star sign: Cancer
- Blood type: A
- Name: 김현중 / Kim Hyun Joong (Gim Hyeon Jung)
- Profession: Actor, singer
- Birthdate: 1986-Jun-6
- Birthplace: Seoul, South Korea
- Height: 180cm
- Weight: 68kg
- Blood type: B
- Star sign: Gemini
- Name: 김범 / Kim Bum
- Real Name: 김상범 / Kim Sang Bum
- Profession: Actor
- Birthdate: 1989-Jul-07
- Height: 181cm
- Weight: 63kg
- Star sign: Cancer
- Talent agency: EYAGI Entertainment (http://www.eyagi-ent.com/)
- Family: Younger sister and brother, cousin/singer Jini
- Name: 김준 / Kim Joon (Kim Jun)
- Real name: 김형준 / Kim Hyung Joon (Kim Hyeong Jun)
- Profession: Singer and actor
- Birthdate: 1984-Feb-03
- Height: 183cm
- Weight: 64kg
- Star sign: Aquarius
- Blood type: O
- Talent agency: 2step Entertainment
BOYS BEFORE FLOWERS