| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Ha Byung-hoon | Crew | Directing | Director, Creator | 20 |
 Kim Hyun-Soo | Crew | Directing | Director | 20 |
 Jo Seok | Crew | Writing | Comic Book, Creator | 20 |
 Kim Yeon-Ji | Crew | Creator | Creator | |
Lee Byeong-hun | Crew | Creator | Creator | |
 Shin Goo | Cast | Actor | Judge | 1 |
 Lee Jae-eun | Cast | Actress | Lee Ji-Soon | 1 |
 Kim Mi-kyeong | Cast | Actress | Kwon Jung-Gwon | 20 |
 Kim Tae-won | Cast | Actor | Himself | 1 |
 Kim Byeong-ok | Cast | Actor | Jo Chul-Wang | 20 |
 Moon Ji-yoon | Cast | Actor | Jo Suk's colleague | 1 |
 Kim Roi-ha | Cast | Actor | Mex / Kim Nam-Chul | 1 |
 Woo Hyeon | Cast | Actor | Ae Bong's father | 1 |
 Song Joong-ki | Cast | Actor | Webtoon writer / Jo Suk's friend | 1 |
 Lee Kwang-soo | Cast | Actor | Jo-Suk | 20 |
 Kim Jong-kook | Cast | Actor | Jo Jong-Wook | Jo Jong-Kook | 1 |
 Shin Dong-yup | Cast | Actor | Himself | 1 |
 Jeong So-min | Cast | Actress | Choi Ae-Bong | 20 |
 Yoon Jin-yi | Cast | Actress | Jo Suk's old friend | 2 |
 Kim Dae-myung | Cast | Actor | Jo-Joon | 20 |
 Yum Dong-hun | Cast | Actor | Department Head Uhm | 2 |
 Gong Seung-yeon | Cast | Actress | Ye Rim | 1 |
 Kim Se-jeong | Cast | Actress | Woman next door in Room 205 | 1 |
 Ahn Sol-bin | Cast | Actress | Herself | 1 |
 Lee Yong-nyeo | Cast | Actress | Landlord granma / Ae Bong's neighbor | 1 |
 Jung Joon-young | Cast | Actor | man next door in room 205 | 1 |
 Yoo Jang-young | Cast | Actor | television producer | 1 |
 Son Young-soon | Cast | Actress | Grandma selling gum | 1 |
 Kim Min-gue | Cast | Actor | Male college student | 1 |
 Jeon Hyun-moo | Cast | Actor | Himself | 1 |
 Kim Sook | Cast | Actress | Kim Sook | 1 |
 Kim Kang-hyun | Cast | Actor | Webtoon editor | 3 |
 Kim Min-ho | Cast | Actor | Jo Suk's friend | 2 |
 Park Kyung-hye | Cast | Actress | Ae Bong's friend | 2 |
 Park Seul-gi | Cast | Actress | Herself | 1 |
 Cao Lu | Cast | Actress | Chinese actress | 1 |
 Park Na-rae | Cast | Actress | Jo Suk's old friend | 1 |
 Seo Hyeon-cheol | Cast | Actor | Deputy Department Head Seo | 3 |
 Choi Dae-sung | Cast | Actor | Taxi driver | 3 |
 Kang Kyun-sung | Cast | Actor | Jang Nam-Chul | Kyun Sung | 1 |
 Lee Su-ji | Cast | Actress | Voice phishing woman | 1 |
 Jung Yi-rang | Cast | Actress | Kim Yoon-ji | 1 |
 Ban Hye-ra | Cast | Actress | Middle-aged wife | 1 |
 Seo Jin-won | Cast | Actor | policeman | 1 |
 Ok Joo-ri | Cast | Actress | Kim Sun-Kwon | 2 |
 Geum Gwang-san | Cast | Actor | Jo Chul Wang's subordinate | 1 |
 Lee Se-young | Cast | Actress | Jo Joon's lover | 1 |
 Joo Boo-jin | Cast | Actress | Grandma Kim Jeom-Rye / Deok Hwan's mother | 1 |
 Bae Jin-yea | Cast | Actress | Herself | 1 |
 Jung So-yeon | Cast | Actress | Herself | 1 |
 Kim Min-kyoung | Cast | Actress | Club woman picked by Jo Joon | 1 |
 Seo Woo-jin | Cast | Actor | Interviewer | 2 |
| Person | Type | Job | Role(s) | Episodes |
