| Full Name | Lee Hye-in |
| Stage Name | Hyein |
| Native Name | 이혜인 |
| Birthday | April 21, 2008 |
| Age | 16 years and 11 months old |
| Zodiac Sign | Taurus |
| Birthplace | Incheon, South Korea |
| Height | 5’7″ (170 cm) |
| Weight | – |
| Blood Type | – |
| MBTI | INFP |
| Education | Wannabe Academy |
| Languages | English, Korean |
| Group | NewJeans (NJZ) Play With Me Club (2019 – May 3, 2021) U.SSO Girl (2017 – December 31, 2018) |
| Social Media | TikTok: [@hyein_grace] weverse |