| idol_id | 1535 |
| Selca owner | |
| Pop type | K-pop |
| Stage name (romanized) | Seoyeon |
| Stage name (original) | 윤서연 |
| Real name (romanized) | Yoon Seoyeon |
| Real name (original) | 윤서연 (尹舒姸) |
| Birth date | 2003-08-06 (age 21) ▲ ▼ |
| Chinese zodiac sign | 🐐 Goat |
| Western zodiac sign | ♌ Leo |
| Hometown | Daejeon |
| Height | 161.0cm (5'3") ▲ ▼ |
| Weight | |
| Blood type | B |
| MBTI | ISFP |
| Color | Dodger Blue |
| Debut date | 2023-02-13 (1 year and 9 months ago) ▲ ▼ |
| Country of origin | 
Korea, Republic of |
| Name | Company | Fandom | Debut date | Disbandment date | Current member | |
|---|---|---|---|---|---|---|
|
tripleS (트리플에스) | Modhaus | 2023-02-13 | Yes |
| Name | Debut date | |
|---|---|---|
|
LOVElution (러블루션) | 2023-08-17 |
|
+(KR)ystal Eyes (크리스탈 아이즈) | 2023-05-04 |