XIAH JunSu
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

YOUNGWOONG JaeJoong
Stage Name : HERO | YoungWoong JaeJoong (영웅재중 or 英雄在中)
Real Name : Kim Jae Joong (김재중)
Birthdate: January 26, 1986
Birthplace: Chungnam
Height: 180 cm
Weight: 63 kg
Blood Type: O
Hobbies: Playing computer games, listening to music, playing the piano, composing, cooking
Specialty: Singing
Position: Main vocal

U-KNOW YunHo
Stage Name : U-KNOW | U-know YunHo (유노윤호)
Real Name: Jung Yun Ho (정윤호)
Birthdate: February 6, 1986
Birthplace: GwangJu (광주)
Height: 184 cm
Weight: 66 kg
Blood Type: A
Hobbies: Music, reading, playing sports, composing music
Specialty: Dancing
Position: Bass vocal, leader of group

MICKY YooChun
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, driving, tuning
Specialty: Singing, composing
Position: Middle low vocal

MAX ChangMin
Real name: Shim Changmin
Stage Name: ChoiKang Changmin (최강창민)
Position: Vocal
Birthday: Feburary 18, 1988
Birthplace. Seoul, South Korea (서울)
Height: 186cm
Weight: 61Kg
Blood Type: B
Interests: listening to music, singing
Specialty: singing, dancing