Cast & crew
On the Line (2021)
Directed by Kim Gok, Kim Sun Written by Bae Young-ik
Cast
| Byun Yo-han | Seo-joon |
| Kim Hie-won | Lee Gyu-ho |
| Park Myung-hoon | General Manager |
| Lee Zoo-young | Kkang-chil |
| Jo Jae-yun | Deok-pal |
| Lee Kyu-sung | The Youngest |
| Won Jin-ah | Mi-Yeon |
| Lee Woon-san | Manager |
| Kim Moo-yul | Kwak Pro |
| Ok Ja-yeon | Detective 1 |
| Yun Jong-seok | Detective 2 |
| Jo Hyun-sik | Voice 1 |
| Yoon Byung-hee | Voice 2 |
| Kim Ga-young | Voice 3 |
| Park Chan-guk | Uncle |
| Hong Kyung | Kim Byung-joon |
| Lee Dong-yong | Worker |
| Choi Byung-mo | Park |
| Son Jong-hak | Manager |
| Min Sung-wook | Jang Gyeong-pil |
| Cha Soon-bae | Chief Police |
| Moon Dong-hyeok | [Busan recruiter with tattoo] |
| Choi Hong-rak | Deok-pal's Subordinate |
| Park Cheon-gook | Call Center (voice) |
| Han Dong-hoon | Call Center (voice) |
| Son Byung-ho | Hwang |
| Ki Joo-bong | President |
| Kim Jang-won | Call Center Supervisor |
| Noh Jae-hoon | Busan Recruiter |
Crew
| Kim Dong-myeong | Visual Effects Supervisor |
| Lee Seon-yeong | Director of Photography |
| Min Jin-soo | Executive Producer |
| Kim Hyung-jik | Set Decoration |
| Yang Hae-gil | Stunts |
| Jung Hae-ji | Lighting Director |
| Lee Na-gyeom | Production Design |
| Park Ja-myung | Producer |
| Bae Young-ik | Writer |
| Jeon Jae-hyeong | Martial Arts Choreographer |
| Kim Jung-hyun | Set Decoration |
| Choi Eui-young | Costume Design |
| Park Jun-yong | Props |
| Shin Min-kyung | Editor |
| Kim Jun-seong | Original Music Composer |
| Gong Tae-won | Sound Supervisor |
| Shin Yeon-jeong | Makeup & Hair |
| Ham Hyeon-gyeong | Adaptation |
| Park Jong-geun | Production Sound Mixer |
| Lee Dong-ho | Special Effects Supervisor |
| Park Kyung-soo | Special Effects Supervisor |
| Kim Gok | Adaptation |
| Kim Sun | Adaptation |
| Seol Ha-woon | Special Effects Makeup Artist |
| Shin Sang-su | VFX Supervisor |
| Kim Gok | Director |
| Kim Sun | Director |
| Kang Yong-bin | Key Grip |
| Lee Won-haeng | Stunts |
| Jeong Bong-yeon | Stunts |