| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Hwang Dong-hyuk | Crew | Production | Executive Producer, Creator | 9 |
 Cho Sang-kyung | Crew | Costume & Make-Up | Costume Design | 9 |
 Lee Hyung-deok | Crew | Camera | Director of Photography | 9 |
Nam Na-young | Crew | Editing | Editor | 9 |
Han Heung-seok | Crew | Production | Producer | 9 |
 Chae Kyung-sun | Crew | Art | Production Design | 9 |
Kim Ji-yeon | Crew | Production | Executive Producer | 9 |
Park Cheong-woo | Crew | Lighting | Lighting Director | 9 |
Park Young-sik | Crew | Crew | Martial Arts Choreographer | 9 |
Jeong Seong-ho | Crew | Crew | Martial Arts Choreographer | 9 |
 Jung Jae-il | Crew | Sound | Original Music Composer | 9 |
Gang Hye-yeong | Crew | Sound | Sound Supervisor | 9 |
Cho Tae-hee | Crew | Costume & Make-Up | Makeup & Hair | 9 |
Jin Hoon | Crew | Art | Props | 9 |
Kim Jung-gon | Crew | Art | Set Dresser | 9 |
Park Hyun-soo | Crew | Sound | Production Sound Mixer | 9 |
 Lee Byung-hun | Cast | Actor | Hwang In-ho | 2 |
 Lee Jung-jae | Cast | Actor | Seong Gi-hun / "No. 456" | 9 |
 Oh Young-soo | Cast | Actor | Oh Il-nam / "No. 001" | 9 |
 Gong Yoo | Cast | Actor | Man at the station | 2 |
 Kim Joo-ryoung | Cast | Actress | Han Mi-nyeo / "No. 212" | 9 |
 Lee Ji-ha | Cast | Actress | "No. 070" | 2 |
 Park Hae-soo | Cast | Actor | Cho Sang-woo / 'No. 218' | 9 |
 Lee You-mi | Cast | Actress | Ji-young / "No. 240" | 9 |
 Wi Ha-jun | Cast | Actor | Hwang Jun-ho | 9 |
 Lee Sang-hee | Cast | Actor | 'No. 017' | 2 |
 Lee Seo-hwan | Cast | Actor | Gi-hoon's friend | 1 |
 Heo Dong-won | Cast | Actor | ○ Mask | 1 |
 You Seong-joo | Cast | Actor | 'No. 111' | 3 |
 Heo Sung-tae | Cast | Actor | Jang Deok-su / "No. 101" | 9 |
 Kim Min-sik | Cast | Actor | Police 2 | 1 |
 Anupam Tripathi | Cast | Actor | Ali Abdul / 'No. 199' | 9 |
 Jung Ho-yeon | Cast | Actress | Kang Sae-byeok / 'No. 067' | 9 |
 Lee Jung-jun | Cast | Actor | □ Mask | 1 |
| Person | Type | Job | Role(s) | Episodes |
