Stage Name: U-Know
Real Name: Jung YunHo (정윤호)
Position: Vocal (Baritone); Leader
Age: 21/22 (Western/Korean)
Birthday: February 6, 1986
Birthplace : Jun Nam
Education: 3rd year university student
Height: 183 cm
Weight: 66 kg
Blood Type: A
Hobbies: Listening to music, reading, sports and composing music
Special Ability: Singing and dancing
1st Annual SM Best Competition - Best Dancing 1st Place
Stage Name : XIAH | Xiah JunSu (시아준수 or 细亚俊秀)
Real Name: Kim Jun Su (김준수)
Birthdate: December 15, 1986, though his parents registered him on January 1, 1987
Birthplace: Gyeonggi (경기 or 京畿道)
Height: 178 cm
Weight: 63 kg
Blood Type: B
Hobbies: Piano, soccer
Specialty: Singing, dancing
Position: Middle high vocal
Stage Name: Hero (Young Woong)
Real Name: Kim Jae Joong (김재중)
Position: Main Vocals
Age: 21/22 (Western/Korean)
Birthday: January 26, 1986
Birthplace : Choong Nam
Education: 3rd Year University Student
Height: 178 cm
Weight: 63 kg
Blood Type: O
Hobbies: Games and listening to music
Special Ability: Singing
2nd Annual SM Best Competition - Best Appearance 1st Place
Stage Name: Max (Choi Kang)
Real Name: Shim Chang Min (심창민)
Position: Vocal (Tenor)
Age: 19/20 (Western/Korean)
Birthday: February 18, 1988
Birthplace : Seoul
Education: 2nd year university student
Height: 186 cm
Weight: 61 kg
Blood Type: B
Hobbies: Games, singing, reading and listening to music
Special Ability: Singing and dancing
6th Annual SM Best Competition - Best Singing 1st Place & Best Artist of the Competition
Stage Name : MICKY | Micky YooChun (믹키유천 or 秘奇有天/秘奇有仟)
Real Name: Park Yoo Chun (박유천)
Birthdate: June 4, 1986
Birthplace: Seoul (서울)
Height: 180 cm
Weight: 60 kg
Blood Type: O
Hobbies: Composing music/lyrics/rap, piano, RC카 드라이빙,튜닝(RCcar driving, tuning)
Specialty: Singing, composing
Position: Middle low vocal
