| Full Name | Lee Jae-yi |
| Stage Name | E-seol |
| Native Name | 이재이 |
| Birthday | August 16, 1998 |
| Age | 26 years and 11 months old |
| Zodiac Sign | Leo |
| Birthplace | Ansan, Gyeonggi-do, South Korea |
| Height | 5’3″ (159 cm) |
| Weight | 88.2 lbs (40 kg) |
| Blood Type | – |
| MBTI | ISFP |
| Education | Induk University |
| Languages | Korean, English |
| Groups | I:MOND (2023-present) X:IN (2023 – June 8, 2023) |
| Social Media | Instagram: [@2_seol_h] YouTube: [@Seoltang_0816] Twitter (X): [@mepc_chiu] |