| Full Name | Jang Seung-yeon |
| Stage Name | Seungyeon |
| Native Name | 장승연 |
| Birthday | November 6, 1996 |
| Age | 28 years and 7 months old |
| Zodiac Sign | Scorpio |
| Birthplace | Seongnam, South Korea |
| Height | 5’4″ (163 cm) |
| Weight | 108 lbs (49 kg) |
| Blood Type | A |
| MBTI | – |
| Education | Seoul School of Performing Arts |
| Languages | Korean, Japanese |
| Group | CLC (2015-2023, 2025-present) |
| Social Media | Instagram: [@seung_monkey] YouTube: [@승몽이네] TikTok: [@seung_monkey] |