| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Park Min-sun | Crew | Editing | Editor | 12 |
Lee Seung-yeop | Crew | Sound | Sound Supervisor | 12 |
 Han Jun-hee | Crew | Directing | Director, Executive Producer, Writer, Creator | 12 |
Hong Jang-pyo | Crew | Visual Effects | Special Effects Supervisor | 6 |
Kim Myung-jin | Crew | Production | Executive Producer | 6 |
 Choi Se-yeon | Crew | Costume & Make-Up | Costume Design | 12 |
Jun Young-seok | Crew | Lighting | Lighting Director | 12 |
Cho Yong-jin | Crew | Directing | Assistant Director | 6 |
Yoo Ji-sun | Crew | Camera | Director of Photography | 12 |
Bae Jun-su | Crew | Art | Production Design | 12 |
Pi Dae-seong | Crew | Costume & Make-Up | Special Effects Makeup Artist | 12 |
 Primary | Crew | Sound | Original Music Composer | 12 |
Lee Jin-young | Crew | Costume & Make-Up | Makeup & Hair | 12 |
 Heo Myeong-haeng | Crew | Crew | Martial Arts Choreographer | 12 |
Park Jae-wan | Crew | Art | Props | 6 |
Kim Yun-suk | Crew | Art | Props | 6 |
 Byun Seung-min | Crew | Production | Executive Producer | 12 |
Kim Bo-tong | Crew | Writing | Original Story, Writer, Creator | 12 |
 Kwon Ji-hoon | Crew | Crew | Martial Arts Choreographer | 6 |
Do Gwang-seop | Crew | Visual Effects | Special Effects Supervisor | 6 |
Jeon Doo-kwan | Crew | Directing | Assistant Director | 6 |
Kim Dong-min | Crew | Production | Producer | 12 |
 Kwon Hae-hyo | Cast | Actor | Jun-ho's father | 4 |
 Oh Ji-hye | Cast | Actress | Ji Yu-na | 1 |
 Choi Jong-won | Cast | Actor | Old Man | 1 |
 Jeong Seok-yong | Cast | Actor | Oh Min-u | 6 |
 Hwang Jeong-min | Cast | Actress | Ru-ri's mother | 3 |
 Ji Jin-hee | Cast | Actor | Gu Ja-woon | 6 |
 Park Mi-hyun | Cast | Actress | Jun-ho's mother | 5 |
 Kim Dong-young | Cast | Actor | Choi Jun-mok | 2 |
 Koo Kyo-hwan | Cast | Actor | Han Ho-yeol | 12 |
 Kim Sung-kyun | Cast | Actor | Park Beom-gu | 12 |
 Go Kyung-pyo | Cast | Actor | Park Sung-woo | 4 |
 Bae Yoo-ram | Cast | Actor | Kim Gyu | 2 |
 Jung Hae-in | Cast | Actor | An Jun-ho | 12 |
 Lee Jun-young | Cast | Actor | Jeong Hyeon-min | 1 |
 Bae Je-gi | Cast | Actor | Detective Bae | 1 |
 Kim Ji-hyun | Cast | Actress | Seo Eun | 6 |
 Park Geun-hye | Cast | Actress | Self (archival footage) | 1 |
 Song Jae-ryong | Cast | Actor | Heo Tae-san | 1 |
 Son Suk-ku | Cast | Actor | Lim Ji-seop | 12 |
 Na Chul | Cast | Actor | Detective Na | 1 |
 Lee Sul | Cast | Actress | Shin Hye-yeon | 5 |
 Yoon Dae-yeul | Cast | Actor | Broker | 1 |
 Cho Hyun-chul | Cast | Actor | Cho Suk-bong | 9 |
 Im Sung-jae | Cast | Actor | Na Jung-seok | 1 |
 Park Se-jun | Cast | Actor | Heo Gi-yeong | 10 |
 Hong Kyung | Cast | Actor | Ryu I-gang | 4 |
 Hyun Bong-sik | Cast | Actor | Chun Yong-duk | 5 |
 Lee Sang-hun | Cast | Actor | Hyeon-min's father | 1 |
 Lee Joong-ok | Cast | Actor | Sauna manager | 1 |
 Choi Jun-young | Cast | Actor | Heo Chi-do | 1 |
 Shin Seung-ho | Cast | Actor | Hwang Jang-soo | 6 |
 Yoo Su-bin | Cast | Actor | Park Se-ung | 4 |
 Park Jung-woo | Cast | Actor | Shin Woo-suk | 2 |
 Kim Beom-soo | Cast | Actor | Kim Il-seok | 8 |
 Oh Min-ae | Cast | Actress | Jun-mok's mother | 2 |
 Lee Woo-jung | Cast | Actress | Nursing officer | 1 |
 Park Yoon-hee | Cast | Actor | Seo Chang-dae | 1 |
 Lee Yeon | Cast | Actress | An Su-jin | 2 |
 Joo Jong-hyuk | Cast | Actor | Lee Hyo-sang | 5 |
 Park Do-gyu | Cast | Actor | 6 | |
 Hong Seok-bin | Cast | Actor | Factory Director | 1 |
 Lee Ja-ryeong | Cast | Actress | Middle-aged Woman | 1 |
 Choi Hyun-wook | Cast | Actor | Shin A-hwi | 1 |
 Yeom Ji-young | Cast | Actress | Check-in Counter Staff | 1 |
 Moon Sang-hoon | Cast | Actor | Kim Ru-ri | 6 |
 Han Woo-yeol | Cast | Actor | Tae Seong-gon | 2 |
 Won Ji-an | Cast | Actress | Mun Yeong-ok | 2 |
 Kwon Da-ham | Cast | Actor | Jeong Hyeong-beom | 4 |
 Yang Mal-bok | Cast | Actress | Hyeong-beom's mother | 3 |
 Lee Gyu-hoe | Cast | Actor | Yang Du-gwan | 5 |
 Im Su-hyung | Cast | Actor | Detective | 1 |
| Person | Type | Job | Role(s) | Episodes |
