| idol_id | 18 |
| Selca owner | rainbow_seungah |
| Pop type | K-pop |
| Stage name (romanized) | Seungah |
| Stage name (original) | 승아 |
| Real name (romanized) | Oh Seungah |
| Real name (original) | 오승아 (吳丞芽) |
| Birth date | 1988-09-13 (age 36) ▲ ▼ |
| Chinese zodiac sign | 🐉 Dragon |
| Western zodiac sign | ♍ Virgo |
| Hometown | Seoul |
| Height | 168.0cm (5'6") ▲ ▼ |
| Weight | 47.0kg (104lb) ▲ ▼ |
| Blood type | A |
| Debut date | 2009-11-12 (14 years and 11 months ago) ▲ ▼ |
| Country of origin | 
Korea, Republic of |
| Name | Company | Fandom | Debut date | Disbandment date | Current member | |
|---|---|---|---|---|---|---|
|
Rainbow (레인보우) | DSP | 2009-11-12 | 2016-10-27 | Group disbanded |
| Name | Debut date | |
|---|---|---|
|
Rainbow Blaxx (레인보우 블랙) | 2014-01-20 |
|
Rainbow Pixie (레인보우 픽시) | 2012-01-11 |