Ji Chang-min (지창민; born November 5, 1998), known professionally as Q (큐), is a South Korean singer-songwriter under One Hundred Label. He is a member of the boy group THE BOYZ. Ji Chang-min (지창민; born November 5, 1998), known professionally as Q (큐), is a South Korean singer-songwriter under One Hundred Label. He is a member of the boy group THE BOYZ.