ONF (band)

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ONF 2018 "You Complete Me" Showcase.png
ONF in June 2018 (From left to right: Wyatt, U, J-Us, Hyojin, Laun, E-Tion, MK)
Background information
OriginSeoul, South Korea
Years active2017–present
  • Hyojin
  • E-Tion
  • J-Us
  • Wyatt
  • MK
  • U
  • Laun

ONF (Hangul온앤오프; short for On N Off) is a South Korean boy group formed by WM Entertainment in 2017. The group is composed of seven members: Hyojin, E-Tion, J-Us, Wyatt, MK, U, and Laun.[1] ONF debuted on August 3, 2017 with an eponymous mini album.[2]



Prior to joining WM Entertainment, U was a trainee at JYP Entertainment.[3] MK trained at Starship Entertainment. In 2015, MK participated in Mnet and Starship Entertainment's survival program No.Mercy but was eliminated.[citation needed] During the group's first showcase, Laun revealed that he was a trainee at Big Hit Entertainment and used to train together with BTS.[4]

All of the members made up WM Boys. WM Boys performed as B1A4's backup dancers at the 2016 Dream Concert in Seoul.[citation needed]

Members J-Us, Laun, and Wyatt made a cameo appearance in labelmate B1A4's mini drama VCR "The Class", and E-Tion and Wyatt appeared in another B1A4 VCR called "Feeling".[citation needed] Hyojin, E-Tion, J-Us, and Wyatt were featured as dancers in the Korean version of the web drama 'Loss:Time:Life'.[citation needed]

On May 25, 2017, all of the members of WM Boys attended IDOLCON (아이돌콘) and performed "Original", a B-side track from their unreleased debut album.[5][unreliable source?]

2017: Debut with ON/OFF, joining Mix Nine[edit]

The group released their debut track "ON/OFF" on August 2, 2017. The following day, the group held their debut stage at M Countdown.[citation needed] The members are composed of two teams, the ON team and the OFF team. Hyojin is the leader of the ON team, which includes E-Tion, MK and Laun. J-Us leads the OFF team, which is Wyatt, and U. Laun is part of both teams.[2]

On November 5, the group joined the survival show Mix Nine and all of them passed the auditions.[citation needed] On October 28, Hyojin was revealed as the male center for Mix Nine's first performance mission: Just Dance. In the live finale on January 26, 2018, Hyojin placed second and Laun placed seventh.[citation needed] The top nine boys of Mix Nine were set to debut later that year, but due to the inability of the individual companies to form an agreement, the project was cancelled.[6]

2018: You Complete Me, Japanese debut[edit]

On June 7, 2018, ONF released their second EP, You Complete Me, with a total of six tracks including the lead single "Complete".[7]

On June 15, ONF signed contract with Japanese company Victor Entertainment to make their official debut in Japan in August.[8][9] They official debuted in Japan on August 1 with their debut single "ON/OFF (Japanese Ver.)". The music video for their debut single was released on July 3.[10]They also held debut showcase in Japan at the Tokyo's Minavi BLITZ Asaka on July 31.[11][12]


  • Hyojin (효진)
  • E-Tion (이션)
  • J-Us (제이어스)
  • Wyatt (와이엇)
  • MK (엠케이)
  • U (유)
  • Laun (라운)


Extended plays[edit]

Title Album details Peak chart positions Sales
You Complete Me 8


Title Year Peak chart
"ON/OFF" 2017 N/A ON/OFF
"Complete (널 만난 순간)" 2018 You Complete Me
"ON/OFF" 2018 N/A 20 Non-album singles
"Complete" 17
"—" denotes releases that did not chart or were not released in that region.


  1. ^ Korean-language singles are digital downloads while Japanese-language singles are physical units, except noted.


  1. ^ "온앤오프 프로필" (in Korean). Naver.
  2. ^ a b "온앤오프, 오늘(3일) '엠카'로 화려한 데뷔" (in Korean). Ten Asia.
  3. ^ "'데뷔' 온앤오프 유 "데뷔 전 JYP 연습생..한국어 위해 삼겹살 알바"" (in Korean). Herald Corp. 2 August 2017. Retrieved 9 August 2017.
  4. ^ "온앤오프 라온 "방탄소년단과 데뷔 전 연습, 잘돼서 뿌듯해"" (in Korean). OSEN. TV Report. 2 August 2017. Retrieved 9 August 2017.
  5. ^ https://www.kpopmap.com/idolcon-concert-2017-lineup/
  6. ^ ""신인상 목표" 온앤오프, B1A4 남동생→'믹스나인'→대세 시동 켠다 [종합]". Osen (in Korean). Retrieved June 16, 2018.
  7. ^ "ONF Brightens up The Summer With 'Complete' Music Video: Watch". Billboard. Retrieved 2018-06-16.
  8. ^ http://www.topstarnews.net/news/articleView.html?idxno=429080#hi
  9. ^ http://m.newsinside.kr/news/articleView.html?idxno=498555
  10. ^ https://www.jvcmusic.co.jp/-/News/A026012/9.html
  11. ^ https://m.entertain.naver.com/read?oid=109&aid=0003835482
  12. ^ http://m.kr.ajunews.com/view/20180802103200448
  13. ^ "Gaon Album Chart". Gaon Music Chart.
  14. ^ "2017년 10월 Album Chart" (in Korean). Gaon Chart. Retrieved September 8, 2017.
  15. ^ "2018년 08월 Album Chart". Gaon Chart (in Korean). Retrieved September 7, 2018.
  16. ^ "Gaon Digital Chart" (in Korean).
  17. ^ "Oricon Chart". Oricon Music Chart.
  18. ^ "月週間 シングルランキング (2018年08月13日付)" (in Japanese). Oricon. August 13, 2018. Archived from the original on August 8, 2018.
  19. ^ "月週間 シングルランキング (2018年10月08日付)" (in Japanese). Oricon. October 8, 2018. Archived from the original on October 4, 2018.

External links[edit]