| Full Name | Wong Kahei |
| Stage Name | ViVi |
| Native Name | 黃珈熙 |
| Birthday | December 9, 1996 |
| Age | 28 years and 6 months old |
| Zodiac Sign | Sagittarius |
| Birthplace | Tuen Mun District, New Territories, Hong Kong, Hong Kong SAR China |
| Height | 5’2″ (158 cm) |
| Weight | 92.6 lbs (42 kg) |
| Blood Type | 0 |
| MBTI | INFP |
| Education | Catholic Ming Yuen Secondary School |
| Languages | Cantonese, Mandarin, Korean, English, Japanese |
| Group | Loossemble LOONA |
| Social Media | Instagram: [@vivikhvv] |