| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Ryu Yong-jae | Crew | Writing | Writer, Creator | 12 |
Jinnie Choi | Crew | Production | Executive Producer | 12 |
Lee Sang-yeob | Crew | Directing | Director | 12 |
Lee Sang-yeop | Crew | Creator | Creator | |
 Choi Yeo-jin | Cast | Actress | Ko Yoo-jin | 12 |
 Jung Young-ki | Cast | Actor | Jo Jin-Seok | 12 |
 Baek Jin-hee | Cast | Actress | Voice | 1 |
 Hwang Chan-seong | Cast | Actor | Baek Chan-sung | 12 |
 Jeong Do-won | Cast | Actor | Mr. Jeong | 12 |
 Jeong Yeon-joo | Cast | Actress | Ji Na | 12 |
 Son Jong-hak | Cast | Actor | Nam Gi-Ho | 12 |
 Ko Sung-hee | Cast | Actress | Han So-yeon | 12 |
 Yoon Hyun-min | Cast | Actor | Ko Nan-do / Holo | 12 |
 Lee Jung-eun | Cast | Actress | So-yeon's mother | 12 |
 Lee You-mi | Cast | Actress | Ji Hye | 12 |
 Nam Myung-ryeol | Cast | Actor | Baek Nam-Gyu | 12 |
 Kim Soo-jin | Cast | Actress | Mère de Nan-Do | 1 |
Park Geon-gyu | Cast | Actor | GIO Labs staff | 12 |
 Lee Ki-chan | Cast | Actor | Lee Ki Chan Yeon Kang Woo [So Yeon's boss] | 4 |
 Kang Seung-hyun | Cast | Actress | Yoo Ram | 12 |
 Gong Min-jeung | Cast | Actress | Jeong Ah | 12 |
 Yang Dae-hyeok | Cast | Actor | Lee Dong Sik | 12 |
| Person | Type | Job | Role(s) | Episodes |
