| idol_id | 900 |
| Selca owner | wekimeki_yoojung |
| Pop type | K-pop |
| Stage name (romanized) | Yoojung |
| Stage name (original) | 유정 |
| Real name (romanized) | Choi Yoojung |
| Real name (original) | 최유정 |
| Birth date | 1999-11-12 (age 24) ▲ ▼ |
| Chinese zodiac sign | 🐇 Rabbit |
| Western zodiac sign | ♏ Scorpio |
| Hometown | Guri |
| Height | 158.0cm (5'2") ▲ ▼ |
| Weight | 44.0kg (97lb) ▲ ▼ |
| Blood type | O |
| Debut date | 2016-05-04 (7 years and 11 months ago) ▲ ▼ |
| Country of origin | 
Korea, Republic of |
| Name | Company | Debut date | Disbandment date | Current member | Roles | |
|---|---|---|---|---|---|---|
|
(우주미키)
|
Starship Entertainment, Fantagio | 2018-06-01 | 2019 | Group disbanded | |
|
(위키미키)
|
Fantagio | 2017-08-08 | Yes | Center, Main dancer, Main rapper | |
|
(아이오아이)
|
YMC Entertainment, CJ E&M | 2016-05-04 | 2017-01-31 | Group disbanded |