Lights on! Hello, I'm Hyojin! Kim Hyojin (김효진) is the Main Vocalist of the boy group ONF under WM Entertainment. He is also the leader of the boy-group's ON sub-unit.
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.