Lee Seok-min, known professionally as DK or Dokyeom, is a South Korean singer, songwriter and actor under Pledis Entertainment. He is a member of the boy group SEVENTEEN, its vocal team sub-unit, the leader of the special sub-unit BSS, and its special sub-unit DxS. Outside of his group activities, in 2019, DK made his musical theatre debut with the lead role of Arthur in XCalibur, the South Korean production of Artus-Excalibur. He then returned to play the role of Arthur in XCalibur's 2021 run. DK has also released several OSTs that have been commercially successful in South Korea.