• I. Introduction:

    “Lights on! Hello, we are ONF!” —ONF

    ONF (온앤오프) is a six-member boy group under WM Entertainment. Originally with seven members, they debuted on August 2, 2017 with their first mini album On/Off.

    II. Members:

    Stage Name: Hyojin (효진)
    Birth Name: Kim Hyo Jin (김효진)
    Position: ON Team Leader, Main Vocalist
    Birthday: April 22, 1994
    Zodiac Sign: Taurus
    Height: 172.8 cm (5’8″)
    Sub-Unit: ON Team

    Prior to debut, he, alongside members E-Tion, J-Us and Wyatt
    appeared in the drama Loss:Time:Life.
    In October 2017, he joined the survival reality show MIXNINE
    as a contestant and representative of his agency and boy group ONF.
    Hyojin ranked 2nd place and made it into the final group, however after much discussion it was decided the MIXNINE group would not debut.

    OSTs "True Beauty OST Part.7" ("Before Today Is Over") (2021)
    Survival shows
    MIXNINE (JTBC, 2017–2018) - contestant
    Web dramas
    Loss:Time:Life (Naver TVCast, 2015)
    Stage Name: E-Tion (이션)
    Birth Name: Lee Chang Yoon (이창윤)
    Position: Lead Vocalist
    Birthday: December 24, 1994
    Zodiac Sign: Capricorn
    Height: 173 cm (5’8″)
    Sub-Unit: ON Team

    Survival shows
    MIXNINE (JTBC, 2017–2018) - contestant
    Loss:Time:Life (Naver TVCast, 2015)
    Stage Name: J-Us (제이어스)
    Birth Name: Lee Seung Jun (이승준)
    Position: OFF Team Leader, Lead Dancer, Vocalist, Rapper
    Birthday: January 13, 1995
    Zodiac Sign: Capricorn
    Height: 174 cm (5’8.5″)
    Sub-Unit: OFF Team

    Reality shows
    MIXNINE (JTBC, 2017)
    Web dramas
    Loss:Time:Life (Naver TVCast, 2015)
    Stage Name: Wyatt (와이엇)
    Birth Name: Shim Jae Young (심재영)
    Position: Main Rapper, Lead Dancer, Vocalist
    Birthday: January 23, 1995
    Zodiac Sign: Aquarius
    Height: 175 cm (5’9″)
    Sub-Unit: OFF Team

    Reality shows
    MIXNINE (JTBC, 2017)
    Web dramas
    Loss:Time:Life (Naver TVCast, 2015)
    Stage Name: MK (엠케이)
    Birth Name: Park Min Kyun (박민균)
    Position: Lead Vocalist, Sub Rapper
    Birthday: November 16, 1995
    Zodiac Sign: Scorpio
    Height: 178 cm (5’10″)
    Sub-Unit: ON Team

    MK was a Starship trainee and participated on
    Mnet's survival show NO.MERCY in 2014
    but was eliminated from the competition.

    Survival shows
    NO.MERCY (Mnet, 2014) - contestant
    MIXNINE (JTBC, 2017–2018) - contestant
    Stage Name: U (유)
    Birth Name: Mizuguchi Yuto (みずぐちゆと)
    Position: Main Dancer, Lead Rapper, Sub Vocalist, Maknae
    Birthday: March 16, 1999
    Zodiac Sign: Pisces
    Height: 170 cm (5’7″)
    Sub-Unit: OFF Team

    U (유) is a Japanese dancer, singer and rapper under WM Entertainment.
    He is the main dancer of the boy group ONF and a member of the group's OFF team sub-unit.
    Since Laun's departure from the group in August 2019, U is also ONF's youngest member.

    U choreographs for ONF and participated in making the choreography for "Why,"
    the title track off of their fourth mini-album Go Live.
    He also worked with fellow member J-Us to create the choreography for "Twinkle,"
    another song from their Go Live mini album.
    Along with the other six members of ONF, U was a contestant on the 2017 JTBC reality show MIXNINE.
    He was eliminated in episode 13 and finished 23rd overall.
    In 2018, U competed in the 1theK dance variety competition Dance War.
    He was eliminated in the second round after receiving the lowest number of votes for his performance of SEVENTEEN's "Clap,"
    but received the highest score of all the contestants from SEVENTEEN's choreography director who served as a judge on the web series

    III. Discography

    IIII. Korean

    IIIII. Studio albums

    • ONF:My Name (2021)
      • City Of ONF (repackage) (2021)

    IIIIII. Mini albums

    • On/Off (2017)
    • You Complete Me (2018)
    • We Must Love (2019)
    • Go Live (2019)
    • Spin Off (2020)
    • Goosebumps (2021)
    • Love Effect (2023)

    IIIIIII. Special albums

    • Popping (2021)
    • Storage of ONF (2022)

    IIIIIV. Collaborations


    • "Let's Eat 3 : Begins OST Part.1" (2018)
    • "When You Love Yourself Season 2 OST Part.1" (2019)
    • "Love Revolution OST Part.1" (2020)

    IIIIVI. Other releases

    IIIII. Japanese

    IIIIII. Singles

    • "On/Off -Japanese Ver.-" (2018)
    • "Complete -Japanese Ver.-" (2018)

    IIIIIII. Special Singles

    • "Love Effect (Japanese Version)" (2023)

    IV. Videography

    • ONF 2021 Live Contact :: Code #1. [Reverse] (2022)

    V. Filmography

    VI. Reality shows

    VI. Awards and nominations

    2021 ONF Hot Trend Male Idol Won
    2022 ONF Male Idol Won