| Full Name | Kim Da-yeon |
| Stage Name | Dayeon |
| Native Name | 김다연 |
| Birthday | March 2, 2003 |
| Age | 22 years and 2 months old |
| Zodiac Sign | Pisces |
| Birthplace | Seoul, South Korea |
| Height | 5’2″ (158 cm) |
| Weight | 90.4 lbs (41 kg) |
| Blood Type | A |
| MBTI | ESTP |
| Education | School of Performing Arts Seoul |
| Languages | Korean, Japanese, English |
| Group | Kep1er |
| Social Media | Instagram: [@ddayyeonii] |