Name: Kim Sung Gyu
Stage name: Sunggyu
Nickname(s): LeaderGyu, ChingGyu

 Date of Birth: April 28, 1989

Height: 175 cm

Position: Leader & Main Vocals

Blood Type: A

Name: Jang Dong Woo
Stage name: Dongwoo
Nickname: Dino Woo

Date of Birth: November 22, 1990

Height: 175 cm

Position: Rapper

Blood Type: A

Name: Nam Woo Hyun
Stage name: Woohyun
Nickname: Namstar

Date of Birth: February 8, 1991

Height: 176 cm

Position: Main Vocal

Blood Type: B

Stage Name:Hoya
Name:Lee Howon
Nickname: Hoaegi(HoBaby) , HoGod

Date of Birth: March 28, 1991

Height: 175 cm

Position: Rapper, Vocals & Dancer

Blood Type: AB

Name: Lee Seong Yeol
Stage name: Seong Yeol
Nickname: Choding Yeol

Date of Birth: August 27, 1991

Height: 181 cm

Position: Vocals

Blood Type: B

Stage Name: L

Date of Birth: March 13, 1992

Height: 178 cm

Position: Vocals & Face of the Group

Blood Type: O

Name: Lee Sung Jong
Stage name: Sung Jong

Date of Birth: September 3, 1993

Height: 177 cm

Position: Vocals & Maknae

Blood Type: A