Group members
Eric Mun (Real name: Mun Jung-Hyuk, 문정혁, 文晸赫; 16 February 1979; leader & rapper)
Lee Min Woo (이민우, 李玟雨; 28 July 1979; composer & sub-vocalist)
Kim Dong Wan (김동완, 金烔完; 21 November 1979; 2nd main vocalist)
Shin Hye Sung (신혜성, 申彗星; Real name: Jung Pil-Kyo, 정필교, 鄭弼敎; 27 November 1979;Main vocalist)
Jun Jin (전진, 前進; Real name: Park Choong-Jae, 박충재, 朴忠裁; 19 August 1980; rapper & sub-vocalist)
Andy Lee (Real name: Lee Sun-Ho, 이선호, 李先皓; 21 January 1981; youngest & rapper)