| Nama Lengkap | Yu Oh-Seong (???) |
| Tanggal Lahir | 11 Januari 1966 |
| Tempat Lahir | Gangwon-do, Korea Selatan |
| Pekerjaan | Aktor |
| Tahun Aktif | 1992 - Sekarang |
| Agensi | Jikim Entertainment |
| Tinggi Badan | 178 cm |
| Berat Badan | 70 kg |
| Golongan Darah | O |
| Pendidikan | Hanyang University (Jurusan Teater & Film) |
| Penghargaan Terkenal | Blue Dragon Film Award for Best Actor (Attack the Gas Station!) Baeksang Arts Award for Best Actor (Friend) |
| Film Terkenal | Beat (1997) Attack the Gas Station! (1999) Friend (2001) Champion (2002) Tomb of the River (2021) |
| Drama TV Terkenal | Jang Gil-san (2004) The Great Seer (2012) Spy (2015) The Swordsman (2020) Crazy Love (2022) |
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