| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Park Ji-eun | Crew | Writing | Writer, Creator | 16 |
 Jang Young-woo | Crew | Directing | Director | 16 |
 Kim Hee-won | Crew | Directing | Director | 16 |
 Anzu Lawson | Cast | Actress | Grace | 16 |
 Dieter Hallervorden | Cast | Actor | Sanssouci Park Guard | 1 |
 Jung Jin-young | Cast | Actor | Hong Beom-joon | 16 |
 Lee Mi-sook | Cast | Actress | Mo Seul-hee | 16 |
 Sebastian Roché | Cast | Actor | Dr. Liam Braun | 2 |
 Kim Young-min | Cast | Actor | Oh Eun-Young | 16 |
 Go Gyu-pil | Cast | Actor | Hyun-woo | 16 |
 Oh Jung-se | Cast | Actor | Lee Min-woo | 1 |
 Kim Joo-ryoung | Cast | Actress | 16 | |
 Oh Man-seok | Cast | Actor | Jeon Bong-ae | 16 |
 Jeon Bae-soo | Cast | Actor | Baek Du-Gwan | 16 |
 Song Joong-ki | Cast | Actor | Vincenzo Cassano | 1 |
 Heo Tae-hee | Cast | Actor | 16 | |
 Kim Ji-won | Cast | Actress | Hong Hae-in | 16 |
 Kim Soo-hyun | Cast | Actor | Baek Hyeon-woo | 16 |
 Na Young-hee | Cast | Actress | Kim Seon-hwa | 16 |
 Yoon Bo-mi | Cast | Actress | Secretary Na | 16 |
 Kwak Dong-yeon | Cast | Actor | Hong Soo-cheol | 16 |
 Hwang Young-hee | Cast | Actress | Jeon bong-ae | 16 |
 Kim Kap-soo | Cast | Actor | Hong Man-dae | 16 |
 Jang Yoon-ju | Cast | Actress | Baek Mi- Seon | 16 |
 Kim Jung-nan | Cast | Actress | Hong Beom-ja | 16 |
 Park Sung-hoon | Cast | Actor | Yoon Eun-seong | 16 |
 Jung Jin-young | Cast | Actor | Hong Beom-joon | |
 Seo Sang-won | Cast | Actor | Dr. Park Jin-Guk [Hae In's doctor] (Ep. 2) | 16 |
 Ren Hanami | Cast | Actress | Hong Beom-ja | 16 |
 Andrew Lee | Cast | Yoon Eun-song | 16 | |
 Lee Su-ji | Cast | Actress | 16 | |
 Lee Ju-bin | Cast | Actress | Cheon Da-hye | 16 |
 Natallia Bulynia | Cast | Actress | Natasha | 16 |
 Park Yoon-hee | Cast | Actor | Hong Beom Seok | 16 |
 Park Jung-yeon | Cast | Actress | Kang-mi | 16 |
 Seo Ye-hwa | Cast | Actress | 16 | |
 Steven Lim | Cast | Actor | Baek Hyeon-woo | 16 |
 Nicole Fong | Cast | Hong Hae-in | 16 | |
 Lim Cheol-soo | Cast | Actor | Hyun Woo | 16 |
 Kim Dong-ha | Cast | Actor | Baek Ho Yeol [Hyun Tae's son] | 16 |
 Kim Shin-rock | Cast | Actress | Hyeon-Suk | 16 |
 Moon Tae-yu | Cast | Actor | Kim Yang-Yu | 16 |
 Lee Ji-hye | Cast | Actress | Hyun Jeong | 16 |
 Kim Do-hyun | Cast | Actor | 16 | |
 Park Jeong-pyo | Cast | Actor | Choon Sik | 16 |
 Kim Do-shin | Cast | Actor | [HQ director] (Ep. 1) | 16 |
 Chae Song-hwa | Cast | Actress | [Reporter] (Ep. 1) | 16 |
| Person | Type | Job | Role(s) | Episodes |
