| Full Name | Momo Hirai |
| Stage Name | Momo |
| Native Name | 平井もも |
| Birthday | November 9, 1996 |
| Age | 28 years and 2 months old |
| Zodiac Sign | Scorpio |
| Birthplace | Kyōtanabe, Kyoto, Japan |
| Height | 5’4″ (163 cm) |
| Weight | 105.8 lbs (48 kg) |
| Blood Type | A |
| MBTI | INFP |
| Education | Tanabe Elementary School, Tanabe Junior High School |
| Languages | Japanese, Korean, English |
| Group | TWICE MISAMO |
| Social Media | Instagram: [@momo] |