Here a small introduction of the 'B2ST' members :
* Doo Joon (두준) born July 4, 1989 as Yoon Doo Joon - Leader, Vocalist, Rapper (윤두준) (oldest)
* Hyun Seung (현승) born September 3, 1989 as Jang Hyun Seung - Lead Vocalist, Main Dancer (장현승)
* Jun Hyung (준형) born December 19, 1989 as Yong Jae Soon (changed to Yong Jun Hyung) - Main Rapper, Vocalist (용준형)
* Yo Seob (요섭) born January 5, 1990 as Yang Yo Seob - Main Vocalist (양요섭)
* Gi Kwang (기광) born March 30, 1990 as Lee Gi Kwang - Lead Vocalist, Lead Dancer (이기광)aka AJ
* Dong Woon (동운) born June 6, 1991 as Son Dong Woon - Vocalist, Rapper (손동운) maknae (youngest)