| Full Name | Matthew Kim |
| Stage Name | BM |
| Native Name | 매튜킴 |
| Birthday | October 20, 1992 |
| Age | 32 years and 7 months old |
| Zodiac Sign | Libra |
| Birthplace | Los Angeles, California, United States |
| Height | 6’2″ (186 cm) |
| Weight | 174.2 lbs (79 kg) |
| Blood Type | A |
| MBTI | ESFJ-T |
| Education | – |
| Languages | Korean, English, Spanish, Portuguese. |
| Group | KARD |
| Social Media | Instagram: [@bigmatthewww] Twitter (X): [@_bigmatthewww] TikTok: [@bigmattheww] |