| Full Name | Son Hye-ju |
| Stage Name | HyeJu |
| Native Name | 손혜주 |
| Birthday | November 13, 2001 |
| Age | 23 years and 7 months old |
| Zodiac Sign | Scorpio |
| Birthplace | Uijeongbu, Gyeonggi Province, South Korea |
| Height | 5’5″ (165 cm) |
| Weight | 101.4 lbs (46 kg) |
| Blood Type | B |
| MBTI | ISTP |
| Education | Sungshin Girl’s High School |
| Languages | Korean |
| Group | Loossemble LOONA |
| Social Media | Instagram: [@lnxexu] |