| Full Name | Kim Jun-seo |
| Stage Name | NaKyoung |
| Native Name | 김준서 |
| Birthday | October 13, 2002 |
| Age | 22 years and 7 months old |
| Zodiac Sign | Libra |
| Birthplace | Yaksa-dong, Jung-gu, Ulsan, South Korea |
| Height | 5’6″ (166 cm) |
| Weight | – |
| Blood Type | 0 |
| MBTI | INFP |
| Education | School of Performing Arts Seoul |
| Languages | Korean, Japanese, English |
| Group | TripleS |
| Social Media | – |