| Stage Name | DK |
| Birth Name | Lee Seokmin |
| Date of Birth | 18 February 1997 |
| Zodiac Sign | Aquarius |
| Place of Birth | Yongin-si, Gyeonggi-do, South Korea |
| Nationality | Korean |
| Height | 179 cm |
| Weight | 66 kg |
| Blood Type | O |
| Position | BOOSEOKSOON Leader, Main Vocalist |
| Sub-Unit | Vocal Team, BOOSEOKSOON |