Lim Jun Hyeok (임준혁; or simply Jun Hyeok) is a South Korean singer-songwriter and musician under iiNSTEADYCLUB. He is a former member of the bands Be-Blossom and DAY6. He made his solo debut on February 22, 2018 with the digital single "Stay". He is best known for being a contestant on the reality survival shows The Unit, Sing Again 2, and Build Up : Vocal Boy Group Survivor.