| Full Name | Choi Yeon-jun |
| Stage Name | Yeonjun |
| Native Name | 최연준 |
| Birthday | September 13, 1999 |
| Age | 25 years and 5 months old |
| Zodiac Sign | Virgo |
| Birthplace | Seongbuk-gu, Seoul, South Korea |
| Height | 5’11” (181 cm) |
| Weight | 138.9 lbs (63 kg) |
| Blood Type | A |
| MBTI | ENFP |
| Education | Gumi Middle School, Bulgok High School, Korean Arts High School, Global Cyber ​​University |
| Languages | Korean, English, Japanese |
| Group | TXT |
| Social Media | Instagram: [@yawnzzn] |