| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Kim Eun-sook | Crew | Writing | Writer, Creator | 16 |
 Ailee | Crew | Sound | Vocals | 16 |
 Chanyeol | Crew | Sound | Vocals | 16 |
 Roy Kim | Crew | Sound | Vocals | 16 |
 Soyou | Crew | Sound | Vocals | 16 |
 Kwon Hyuk-chan | Crew | Directing | Director | 16 |
 Lee Eung-bok | Crew | Directing | Director, Creator | 16 |
 Lasse Lindh | Crew | Sound | Vocals | 16 |
 Heize | Crew | Sound | Vocals | 16 |
Yoon Ha-lim | Crew | Production | Executive Producer | 16 |
 Kwon Jeong-yeol | Crew | Sound | Vocals | 16 |
 Jung Joon-il | Crew | Sound | Vocals | 16 |
 Nam Hye-seung | Crew | Sound | Original Music Composer | 16 |
Kim Seon-wung | Crew | Crew | Stunts | 16 |
 Yoon Jong-ho | Crew | Directing | Director | 16 |
Kim So-yeon | Crew | Art | Production Design | 16 |
 Eddy Kim | Crew | Sound | Vocals | 16 |
 Sam Kim | Crew | Sound | Vocals | 16 |
 Kim Byung-chul | Cast | Actor | Park Joong-heon | 16 |
 Lee Dong-wook | Cast | Actor | Grim Reaper / Wang Yeo | 16 |
 Gong Yoo | Cast | Actor | Kim Shin | 16 |
 Jung Young-ki | Cast | Actor | Park Gyeong-shik | 16 |
 Park Hee-von | Cast | Actress | Ji Eun-tak's mother | 1 |
 Yoo In-na | Cast | Actress | Sunny / Kim Seon | 16 |
 Yoon Kyung-ho | Cast | Actor | Kim Wooshik | 16 |
 Kim Min-young | Cast | Actress | Park Soo-jin | 16 |
 Kim So-hyun | Cast | Actress | Kim Sun | 7 |
 Ryu Tae-ho | Cast | Actor | Eun-Tak's boss | 1 |
 Kim Chang-hwan | Cast | Actor | Batch 23 Grim Reaper | 16 |
 Kim Go-eun | Cast | Actress | Ji Eun-tak | 16 |
 Lee El | Cast | Actress | Sam-shin | 16 |
 Jo Woo-jin | Cast | Actor | Kim Do-yeong | 16 |
 Choi Woong | Cast | Actor | Grim Reaper's Junior | 16 |
 Han Seo-jin | Cast | Actress | Young Ji Eun-tak | 16 |
 Jung Hae-in | Cast | Actor | Tae-Hee | 2 |
 Kim Min-jae | Cast | Actor | King | 8 |
 Yook Sung-jae | Cast | Actor | Yoo Deok-hwa | 16 |
 Park Se-wan | Cast | Actress | Ghost with glasses | 3 |
 Yoon Da-young | Cast | Actress | Batch 23 Grim Reaper / Court Lady | 16 |
 Jung Ji-hoon | Cast | Actor | Young Yoo Deok-hwa / Yoo Geum-seon | 16 |
 Kim Seong-gyeom | Cast | Actor | Yoo Shin-woo | 16 |
 Choi Ri | Cast | Actress | Park Gyeong-mi | 16 |
 Yeom Hye-ran | Cast | Actress | Ji Yeon-sook | 16 |
 Go Bo-gyeol | Cast | Actress | Kim Yu-na | 16 |
 Park Kyung-hye | Cast | Actress | Virgin Ghost | 16 |
 Kim Hye-yoon | Cast | Actress | Widowed lady | 1 |
 Ahn Ji-hyun | Cast | Actress | Ko Hyeon-jung (ghost at library) | 3 |
 Jo Hyun-sik | Cast | Actor | Batch 21 Grim Reaper | 16 |
 Kim Ki-doo | Cast | Actor | Grim Reaper | 16 |
 Carson Allen | Cast | Actress | Girl at restaurant | 1 |
 Kim Nan-hee | Cast | Actress | Eun-tak's Teacher | 16 |
 Kang Hye-kyung | Cast | Actress | Hotel receptionist | 1 |
 Ha-min | Cast | Actress | [Kim Sun's court lady] | 3 |
 Kim Baek-ri | Cast | Actress | Hwang Mi-young | 16 |
| Person | Type | Job | Role(s) | Episodes |
