| Full Name | Bae Su-min |
| Stage Name | Sumin |
| Native Name | 배수민 |
| Birthday | March 13, 2001 |
| Age | 24 years and 3 months old |
| Zodiac Sign | Pisces |
| Birthplace | Daei-dong, Nam-gu, Pohang, Gyeongsangbuk-do, South Korea |
| Height | 5’3″ (159 cm) |
| Weight | 94.8 lbs (43 kg) |
| Blood Type | – |
| MBTI | ISFJ |
| Education | Kyungil High School |
| Languages | Korean, English, Japanese |
| Group | STAYC (2020-present) |
| Social Media | Instagram: [@baesuminiee] |