| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Ailee | Crew | Sound | Vocals | 12 |
 Son Eun Hye | Crew | Writing | Writer | 12 |
 Park Chan-yool | Crew | Directing | Director | 12 |
 Yoon Mi-rae | Crew | Sound | Vocals | 12 |
Son Ki-won | Crew | Production | Producer | 12 |
 Go Woon | Crew | Sound | Vocals | 12 |
 Lee Kan-hee | Cast | Actress | Ma Sung Tae's mother | 12 |
 Kim Yeong-ok | Cast | Actress | Maeng Ye-Soon | 12 |
 Hyun Woo | Cast | Actor | Ma Sung-Tae | 12 |
 Yoon So-hee | Cast | Actress | Kang Cho-Hong | 12 |
 Lee Hong-bin | Cast | Actor | Hwang Jae-Wook | 12 |
 Koh Soo-hee | Cast | Actress | Jo Aeng-Doo | 12 |
 Jang Won-young | Cast | Actor | Mr. Yang | 1 |
 Jo Sun-mook | Cast | Actor | Hwang Je Wook's father | 12 |
 Choi Tae-hwan | Cast | Actor | Choi Min-Soo | 12 |
 Yoon Jin-sol | Cast | Actress | Song Ha Kyung | 1 |
 Min Dae-sik | Cast | Actor | 12 | |
 Yoo Hye-In | Cast | Actress | Amy | 1 |
 Jung Young-ju | Cast | Actress | Mrs. Song | 12 |
 Park Young-soo | Cast | Actor | TV show director | 1 |
 Kim Chae-hyun | Cast | Actress | Kang Cho Hong's mother | 12 |
 Ha Soo-ho | Cast | Actor | bank clerk | 12 |
 Joo Boo-jin | Cast | Actress | 12 | |
 Baek Jae-jin | Cast | Actor | 12 | |
 Song Hoon | Cast | Actor | elevator repairman | 12 |
 Hong Jeong-min | Cast | Actress | Kang Cho-hong [young] | 12 |
 Yeom Ji-young | Cast | Actress | 12 | |
 Choi Jae-sup | Cast | Actor | Kim Dong-Soo | 12 |
 Lee Do-yeop | Cast | Actor | 12 | |
 Kim In-kyung | Cast | Actress | bully | 12 |
 Gi So-you | Cast | Actress | Kang Cho Hong [child] | 12 |
 Park Jae-Won | Cast | Actor | 12 | |
| Person | Type | Job | Role(s) | Episodes |
