Rain was a back dancer for Park Ji Yoon for her 2000 track “Song of the Moonlight”. Park Ji Yoon was signed under JYP Entertainment at the time, where Rain was still a trainee.
2. 9muses Kyungri
Kyungri joined 9muses in 2012, but before that, she was a back dancer for Chaeyeon’s track “Look Look Look” in 2010.
3. PRISTIN Nayoung, Kyulkyung, Xiyeon
Before joining Produce 101 Season 1, Pledis Entertainment trainees Nayoung, Kyulkyung, and Xiyeon were back dancers for Orange Caramel and their song “My Copycat” at a festival in 2014.
4. Highlight Yoseob, Doojoon
Before Kikwang debuted with BEAST in October 2009, he debuted as a soloist under the name AJ in March of the same year. His fellow BEAST members Yoseob and Doojoon acted as two of his backup dancers at the time.
Prior to becoming the superstar rookie soloist, she is today, Chungha was a back dancer for Ulala Session during their performance on Immortal Songs 2 back in 2013.
6. Wanna One Kang Daniel
Kang Daniel is currently the top male idol in Korea but before he rose to that position, he was a back dancer for Fiestar Cao Lu on the show Her Secret Weapon in 2015.
7. VIXX Leo, N
Signed to Jellyfish Entertainment at the time, Fly to the Sky member Brian Joo released a solo album in 2012 and then-trainees Leo and N were back dancers for his title track “Let This Die”
8. EXO Lay
During SHINee‘s first-ever concert tour in 2011, Jonghyun hurt his ankle so Lay stepped in and performed the choreography in his place, and didn’t miss a beat.
9. BTS J-Hope, Jungkook, V, Jin, Suga
International sensations BTS also had members start out as back dancers. J-Hope, Jungkook, V, Jin, and Suga all were back dancers in Jo Kwon‘s solo track “I’m Da One” in 2012, a year before their debut.