BDC Seongjun Profile
- Stagename: Seongjun (성준)
- Surname: Hong
- Firstname: Seong-jun
- Nationality: Korean
- Birthdate: March 14, 1999
- Age: 20 (International), 21 (Korean)
- Western zodiac: ♓ Pisces
- Chinese zodiac: Rabbit
- Height: 175 cm (5 ft 8 in)
- Weight: 55 kg (121 lbs)
- Bloodtype: A
