| Birth Name | Jeong Jae Hyun, but he legalized to Jeong Yoon Oh (정윤오) |
| Stage Name | Jaehyun (재현) |
| Birthday | February 14, 1997 |
| Height | 180 cm |
| Weight | 63 kg |
| Blood Type | A |
| MBTI | ESTP / ESFP |
| Group | NCT |
| Company | SM Entertainment |
| Position | Main Vocalist, Dancer, Rapper, Visual * |
| Zodiac Sign | Aquarius |
| Representative Emoji | 🍑 |