lee junki (Onew)
The leader, one of the vocalists and oldest member in the group
DOB: December 14/1989
Born: Gwangmyeong, Gyeonggi-do

kim jonghyun (jonghyun)
the main vocalist in the group
DOB: April 8/1990
Born: Seoul, South Korea

kim kibum (Key)
one of the rappers and vocalists in the group
DOB: September 23/1991
Born: Daigu Metropolitan City South Korea

choi minho (minho)
the other rapper in the group
DOB: December 9/1991
Born: Incheon Metropolitan City, South Korea

lee taemin (taemin)
the lead dancer of the group
DOB: July 18/1993
Born: Seoul, South Korea