Korean Name : SeungHo
Date Birth : October 16, 1987
Place of Birth : Seoul, Korea
(Leader, Vocalist )
Korean Name : Jong Byeonghui
English Name : G.O
Date Birth : November 6, 1987
Place of Birth : Changwon
( Main Vocalist )
Korean Name : Yi Changseon
English Name : Joon
Date Birth : February 7, 1988
( Vocal, Dance )
Korean Name : Bak Sanghyeon
English Name : Cheondung
Date Birth : October 7, 1990
Place of Birth : Korea
( Dance, Rap )
Korean Name : Bang Cheolyong
English Name : Mir
Date Birth : March 10, 1991
( Rapper )