| Full Name | Seo Young Ho John Suh |
| Stage Name | Johnny |
| Native Name | 서영호 |
| Birthday | February 9, 1995 |
| Age | 30 years and 2 months old |
| Zodiac Sign | Aquarius |
| Birthplace | Chicago, Illinois, United States |
| Height | 6’1″ (185 cm) |
| Weight | 154.3 lbs (70 kg) |
| Blood Type | B |
| MBTI | ENTP |
| Education | Glenbrook North High School |
| Languages | English, Korean, Japanese, Chinese, Spanish |
| Group | NCT NCT U NCT 127 |
| Social Media | Instagram: [@johnnyjsuh] |