- Korean Name: Lee Jin Ki (이진기)
- Stage Name: Onew (온유)
- Nicknames: Leader Onew, Dubu, Ondubu, Ondrew,Ontokki, Old Man, Eunsook
- Birthday: December 14, 1989
- Position: Leader, Main Vocalist
- Nationality: Korean
- Height: 178cm (5'8")
- Blood Type: O
- Specialties: Piano, Mandarin
- Korean Name: Kim Ki Bum (김기범)
- Stage Name: Key (키)
- Nicknames: Kimbummie, Bummie, Almighty Key, Diva Key, Kimbap, Gwiboon
- Birthday: September 23, 1991
- Position: Vocalist, Lead Rapper
- Nationality: Korean
- Height: 181cm (5'9")
- Weight: 62kg (137lbs)
- Blood Type: B
- Specialties: Water Skiing, English, Mandarin
- Korean Name: Choi Min Ho (최민호)
- Stage Name: Minho (민호)
- Nicknames: Flaming Charisma Minho, Frog Prince Minho
- Birthday: December 9, 1991
- Position: Main Rapper, Face of the Group
- Nationality: Korean
- Height: 184cm (6'0")
- Blood Type: B
- Specialties: Soccer, Basketball, Performing, English
- Korean Name: Lee Tae Min (이태민)
- Stage Name: Taemin (태민)
- Nicknames: Maknae, Power Taem, Taem, Taeminnie
- Birthday: July 18, 1993
- Position: Main Dancer, Vocalist, Maknae
- Nationality: Korean
- Height: 179cm (5'8")
- Blood Type: B
- Specialties: Listening to Music, Poppin (dance), Piano, Mandarin
Member for Eternity
Jonghyun passed away in the evening of December 18, 2017
Rest in Peace Jonghyun...
You did well!
- Korean Name: Kim Jong Hyun (김종현)
- Stage Name: Jonghyun (종현)
- Nicknames: Bling Bling Jonghyun, Jjong, Dino Jjong, Puppy Jjong, Jonghee
- Birthday: April 8, 1990
- Died: December 18, 2017
- Position: Main Vocalist
- Nationality: Korean
- Height: 174cm (5'9″)
- Blood Type: AB
- Specialties: Poppin (dance), Writing Lyrics, Piano