Hongseok
| Stage Name | Hongseok |
| Full Name | Yang Hong Seok |
| Country of Birth | Korea |
| Date of Birth | Apr 17, 1994 |
| Age | 29 years old |
| Height | 1.81 m (5'11") |
| Weight | 64 kg (142 lbs) |
| Blood Type | A |
Not Ranked
| Stage Name | Hongseok |
| Full Name | Yang Hong Seok |
| Country of Birth | Korea |
| Date of Birth | Apr 17, 1994 |
| Age | 29 years old |
| Height | 1.81 m (5'11") |
| Weight | 64 kg (142 lbs) |
| Blood Type | A |
Not Ranked