Member SS501

Kim Hyun Joong (Korean: 김현중; Hanja: 金賢重; Japanese: キム･ヒョンジュン)

Birthday: June 6, 1986 (1986-06-06) (age 24)
Position: Leader, Middle-low vocal
Past experience: MC Show Music Core, MC SBS Inki Gayo, MC Mnet Countdown.
Notes: Kim Hyun Joong had been a host of MBC's music show Show! Music Core2, debuting on November 11, 2006, joining Brian from Fly to the Sky. He left the show in order to make the group's first debut in Japan, at the beginning of 2007. They released 2 albums in Japan, and they are returning to Korea in February, after a concert in China.

Heo Young Saeng (Korean: 허영생; Hanja: 許永生; Japanese: ホ･ヨンセン)

Birthday: November 3, 1986 (1986-11-03) (age 23)
Position: lead vocal (High vocal)
Past experience: DJ for SBS's "Youngstreet" Radio (from June to August 2006), MC Mnet Countdown.
Notes: Heo Young Saeng was a former trainee under SM Entertainment, he left to join DSP Entertainment. He is close to many TVXQ and Super Junior members, notably Hero JaeJoong, Yehsung, and Choi Siwon[citation needed].

Kim Kyu Jong (Korean: 김규종; Hanja: 金圭鐘; Japanese: キム･ギュジョン)

Birthday: February 24, 1987 (1987-02-24) (age 23)
Position: Middle vocal
Past experience: Mnet "Drama - Break", DJ for SBS's "Youngstreet" Radio, MC Mnet Countdown.
Notes: Kim Kyu Jong, along with Park Jung Min, were DJs for SBS's "Youngstreet" radio.

Park Jung Min (Korean: 박정민 Hanja: 朴政珉; Japanese: パク・ジョンミン)

Birthday: April 3, 1987 (1987-04-03) (age 23)
Position: Low vocal
Past experience: MTV Fresh VJ (from March to November 2003), DJ for SBS's "Youngstreet" Radio, MC of a Korean TV Show (MBC): 74434, MC SBS Inki Gayo, MC Mnet Countdown.
Notes: Jung Min is the new MC of a Korean TV Show (MBC) entitled !느낌표: 위대한 유산 74434. This show explores the Korean heritage and its lost treasures. He was also a DJ for "Youngstreet" along with fellow group member Kim Kyu Jong.

Kim Hyung Jun (Korean: 김형준 Hanja: 金亨俊; Japanese: キム・ヒョンジュン)

Birthday: August 3, 1987 (1987-08-03) (age 23)
Position: Middle-high vocal
Past experience: Oak Joo Hyun's (Fin.K.L) Music Video - Catch, MC Mnet Hello Chat (2006), MC Mnet ALBRARY (2008), MC Mnet Countdown.
Notes: Kim Hyung Jun's brother Kim Ki Bum (Marumir/마루미르) was in the new group Xing he then left in 2007, now he is in a new boyband named U-Kiss. His brother has often been confused with Kim Ki Bum of Super Junior.