| Full Name | Lee Hyun-seo |
| Stage Name | Leeseo |
| Native Name | 이현서 |
| Birthday | February 21, 2007 |
| Age | 18 years and 2 months old |
| Zodiac Sign | Pisces |
| Birthplace | Banpo-dong, Seocho-gu, Seoul, South Korea |
| Height | 5’5″ (165 cm) |
| Weight | 99.2 lbs (45 kg) |
| Blood Type | – |
| MBTI | ENFP |
| Education | Hanlim Arts School |
| Languages | Korean, Japanese, English |
| Group | IVE |
| Social Media | Instagram: [@eeseooes] |