| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Jo Soo-won | Crew | Directing | Director, Creator | 20 |
 Park Hye-ryun | Crew | Writing | Screenplay | 20 |
 Jo Deok-hyeon | Cast | Actor | Jo Won-goo | 20 |
 Lee Bo-young | Cast | Actress | Hye Sung [Voice navigation] | 1 |
 Byun Hee-bong | Cast | Actor | Choi Gong-pil | 20 |
 Jeong In-gi | Cast | Actor | Gi Ho-sang | 20 |
 Lee Pil-mo | Cast | Actor | Hwang Gyo-dong | 20 |
 Kang Shin-il | Cast | Actor | Lee Young-tak | 20 |
 Ahn Sun-Young | Cast | Actress | Broadcasting writer | 2 |
 Jung Woong-in | Cast | Actor | Min Joon Kook | 1 |
 Jang Young-nam | Cast | Actress | Ha-myeong's Mother | 20 |
 Woo Hyeon | Cast | Actor | Homeroom teacher | 3 |
 Shin Jung-keun | Cast | Actor | Choi Dal-pyeong | 20 |
 Lee Joon | Cast | Actor | FAMA | 1 |
 Yoon Sang-hyun | Cast | Actor | Lawyer Cha Kwan Woo | 1 |
 Park Shin-hye | Cast | Actress | Choi In-ha | 20 |
 Lee Ju-seung | Cast | Actor | Ahn Chan-soo | 20 |
 Jin Kyung | Cast | Actress | Song Cha-ok | 20 |
 Kim Min-young | Cast | Actress | Song Yeong Joo [Daughter of the woman who died] | 1 |
 Min Sung-wook | Cast | Actor | Jang Hyeon-gyu | 20 |
 Kim Young-jun | Cast | Actor | Neighbour with Pinocchio syndrome | 2 |
 Nam Da-reum | Cast | Actor | Young Gi Ha-myeong | 20 |
 Jang Gwang | Cast | Actor | Headmaster | 1 |
 Lee Yu-bi | Cast | Actress | Yoon Yoo-rae | 20 |
 Kim Young-kwang | Cast | Actor | Seo Beom-jo | 20 |
 Yum Dong-hun | Cast | Actor | Moon Deok Soo [Task leader] | 1 |
 Tae Hang-ho | Cast | Actor | Cha Woo-cheol | 20 |
 Shin Jae-ha | Cast | Actor | Young Gi Jae-myeong | 20 |
 Yoon Kyun-sang | Cast | Actor | Gi Jae-myeong | 20 |
 Choo Soo-hyun | Cast | Actress | Im Jae-hwan | 20 |
 Kim Hae-sook | Cast | Actress | Park Ro-sa | 20 |
 Kim Kwang-kyu | Cast | Actor | Kim Gong-joo | 20 |
 Lee Jong-suk | Cast | Actor | Choi Dal-po / Gi Ha-myeong | 20 |
 Kangnam | Cast | Actor | University student in a blue jacket | 1 |
 Roh Jeong-eui | Cast | Actress | Young Choi In-ha | 20 |
 Kim Yeong-hoon | Cast | Actor | Lee Il-joo | 20 |
 Jang Hang-jun | Cast | Actor | Director | 1 |
 Oh Seung-ah | Cast | Actress | [MSC news reporter interviewee] | 1 |
 Choi Jong-hoon | Cast | Actor | Factory worker | 1 |
 Yoon Seo-hyun | Cast | Actor | Lee Joo-ho | 20 |
 No Tae-yeob | Cast | Actor | Attacker | 1 |
 Dowoo | Cast | Actor | MSC new Reporter interviewee | 1 |
 Park Gil-su | Cast | Actor | Jo Jang Woo [Bus Company Owner] | 1 |
 Ri Min | Cast | Actor | Drunk driver | 1 |
 Lee Se-Wook | Cast | Actor | 20 | |
| Person | Type | Job | Role(s) | Episodes |
