| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Hong Jeong-eun | Crew | Writing | Writer, Creator | 16 |
 Hong Mi-ran | Crew | Writing | Writer, Creator | 16 |
 Taeyeon | Crew | Sound | Theme Song Performance | 16 |
 Oh Choong-hwan | Crew | Directing | Director | 16 |
 Joy | Crew | Sound | Theme Song Performance | 16 |
 Irene | Crew | Sound | Theme Song Performance | 16 |
 Seulgi | Crew | Sound | Theme Song Performance | 16 |
 Wendy | Crew | Sound | Theme Song Performance | 16 |
 Kim Jeong-hyeon | Crew | Directing | Co-Director | 16 |
 Yeri | Crew | Sound | Theme Song Performance | 16 |
 Chungha | Crew | Sound | Theme Song Performance | 16 |
 Heize | Crew | Sound | Theme Song Performance | 16 |
 Gummy | Crew | Sound | Theme Song Performance | 16 |
 Kwon Jeong-yeol | Crew | Sound | Vocals | 16 |
Park Se-jun | Crew | Sound | Music | 16 |
 Oh Ji-ho | Cast | Actor | Koo Hyun-mo | 1 |
 Oh Tae-kyung | Cast | Actor | Jeong Eun-seok | 1 |
 Yeo Jin-goo | Cast | Actor | Goo Chan-sung | 16 |
 Lee Joon-gi | Cast | Actor | The Priest | 1 |
 Nam Jung-hee | Cast | Actress | 112-year-old woman | 1 |
 Shin Jung-keun | Cast | Actor | Kim Sun-bi | 16 |
 Kim Sang-wook | Cast | Actor | Ryu Hwan-yong | 16 |
 Sulli | Cast | Actress | Wang Ji-eun | 1 |
 Lee Chang-jik | Cast | Actor | Brewery Chief | 1 |
 Lee Da-wit | Cast | Actor | Seol Ji-won | 7 |
 Nam Kyung-eup | Cast | Actor | Chairman Wang | 3 |
 Lee Seung-joon | Cast | Actor | Kang Man-young | 1 |
 Kim Won-hae | Cast | Actor | Park Gyu-ho | 1 |
 Nam Da-reum | Cast | Actor | Spirit of the Well | 2 |
 IU | Cast | Actress | Jang Man-wol | 16 |
 Park Jin-joo | Cast | Actress | Kyeong-ah | 1 |
 Yang Jo-a | Cast | Actress | Mi-ra's Colleague | 1 |
 Hwang Young-hee | Cast | Actress | Hwang Moon-sook | 1 |
 Lee Si-eon | Cast | Actor | Astronaut | 1 |
 Lee Yi-kyung | Cast | Actor | Actor Yoo-oh | 1 |
 Seo Yi-sook | Cast | Actress | God Mago | 16 |
 Choi Yoo-song | Cast | Actress | Goo Chan-sung's mother | 1 |
 Seo Eun-soo | Cast | Actress | Veronica | 1 |
 Kim Seung-Han | Cast | Actor | Kang Hyun-jin | 1 |
 Pyo Ji-hoon | Cast | Actor | Ji Hyun-joong | 16 |
 Jeong Dong-hwan | Cast | Actor | Noh Joon-suk | 2 |
 Kang Mi-na | Cast | Actress | Kim Yoo-na | 16 |
 Park You-na | Cast | Actress | Princess Song-hwa / Lee Mi-ra | 16 |
 Hong Seo-jun | Cast | Actor | Yoo-na's Father | 1 |
 Lee Tae-seon | Cast | Actor | Yeon-woo / Park Young-soo | 16 |
 Han Sa-myeong | Cast | Actor | Truck Driver that killed a father and a son | 1 |
 Choi Dae-hoon | Cast | Actor | Joseon Scholar | 1 |
 Lee Min-young | Cast | Actress | Ghost | 1 |
 Cha Mi-kyeong | Cast | Actress | Mother wants Afterlife wedding | 1 |
 Cho Hyun-chul | Cast | Actor | Sanchez | 16 |
 Kang Hong-suk | Cast | Actor | Angel of death | 16 |
 Pyo Ye-jin | Cast | Actress | Actress | 1 |
 Bae Hae-seon | Cast | Actress | Choi Seo-hee | 16 |
 Hong Kyung | Cast | Actor | Baker | 1 |
 Kim Joon-hyun | Cast | Actor | Self | 1 |
 Kim Jung-don | Cast | Actor | Detective Jang Woon Myung | 1 |
 Won Mi-won | Cast | Actress | Ji Hyun-mi | 16 |
 Jo Hyun-sik | Cast | Actor | Human Guest from Room 404 | 1 |
 Lee Do-hyun | Cast | Actor | Go Chung-myung | 16 |
 Kim Kang-hoon | Cast | Actor | Young Goo Chan-sung | 2 |
 Kim Gyu-ri | Cast | Actress | Young Jang Man-wol | 1 |
 Park Young-soo | Cast | Actor | Real estate agent | 1 |
 Jo Ah-ra | Cast | Actress | Na Ji-seon | 16 |
 Cha Chung-hwa | Cast | Actress | Water Ghost / Policewoman | 1 |
 Han Jae-yi | Cast | Actress | Seo Joo-hee | 16 |
 Go Seung Bo | Cast | Actor | Child Ghost eating Dumplings | 1 |
 Lee Chae-kyung | Cast | Actress | Director of Royal Pacific Hotel | 3 |
 So Hee-jung | Cast | Actress | Lee Se-young | 1 |
 Ahn Soo-ho | Cast | Actor | Moving truck driver | 2 |
 Lee Hyun-kyun | Cast | Actor | Dr. Han | 1 |
 Kang Suk-won | Cast | Actor | Taxi Driver | 1 |
 Gu Da-song | Cast | Actress | Yoo-na's Classmate | 3 |
 Jang Hae-song | Cast | Actor | Newlywed | 1 |
 Kwon Hyuk-hyun | Cast | Actor | Groom | 1 |
 Lee Won-jin | Cast | Actor | Thirsty Ghost | 1 |
 Jang Tae-min | Cast | Actor | Bang Tae-woo | 1 |
 Kim Esther | Cast | Actress | Yoo-na's Classmate | 3 |
 Yu Yeon Seok | Cast | Actor | Baker | 1 |
 Heo Soo Bin | Cast | Actress | Refugee Woman in the flashback | 1 |
 Kim Young-sun | Cast | Actress | Yoo-na's Mother | 1 |
 Lee Ji Wan | Cast | Actress | Jang Soo-jung | 1 |
 Lee Min Ryung | Cast | Actress | Yoon Ga-young | 4 |
 Yang Hee-won | Cast | Actor | Truck Accident Son Ghost | 2 |
 Seo Yi-soo | Cast | Actress | Ji Hyun-mi | 4 |
 Ahn Su-bin | Cast | Actress | Lee Do-yun | 6 |
 Jeong Ye-bin | Cast | Actress | Yoo-na's Classmate | 3 |
| Person | Type | Job | Role(s) | Episodes |
