| idol_id | 989 |
| Selca owner | fromis9_seoyeon |
| Pop type | K-pop |
| Stage name (romanized) | Lee Seoyeon |
| Stage name (original) | 이서연 |
| Real name (romanized) | Lee Seoyeon |
| Real name (original) | 이서연 (李瑞淵) |
| Birth date | 2000-01-22 (age 24) ▲ ▼ |
| Chinese zodiac sign | 🐇 Rabbit |
| Western zodiac sign | ♒ Aquarius |
| Hometown | Seoul |
| Height | 157.7cm (5'2") ▲ ▼ |
| Weight | 47.2kg (104lb) ▲ ▼ |
| Blood type | A |
| Debut date | 2017-11-30 (7 years and 1 month ago) ▲ ▼ |
| Country of origin | 
Korea, Republic of |
| Name | Company | Debut date | Disbandment date | Current member | Roles | |
|---|---|---|---|---|---|---|
|
(프로미스나인)
|
Off The Record Entertainment | 2018-01-24 | Yes | Main rapper |