Eunchan (TEMPEST)
| Full Name | Choi Byeong-seop |
| Stage Name | Eunchan |
| Native Name | 최병섭 |
| Birthday | February 27, 2001 |
| Age | 24 years old |
| Zodiac Sign | Pisces |
| Height | 187 cm (6’1″) |
| Weight | N/A |
| Blood Type | B |
| MBTI Type | ISTJ |
| Birthplace | Ansan, Gyeonggi-do, South Korea |
| Nationality | Korean |
| Group | TEMPEST |
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