| Person | Type | Job | Role(s) |
|---|---|---|---|
 Kim Dong-gi | Crew | Sound | Original Music Composer |
 Choi Sang-hun | Crew | Directing | Director |
 Hwang Shin-hye | Cast | Actress | Classroom Ghost Cameo |
 Ji Dae-han | Cast | Actor | Man at the Internet Cafe |
 Lee Pil-mo | Cast | Actor | Chairman Choi |
 Aki Asakura | Cast | Actress | Yeong-ju |
 Alyssa Soebandono | Cast | Actress | Miya |
 Kurumi Shimizu | Cast | Actress | Jin-hee |
 Kang Se-jung | Cast | Actress | Mi-joo |
 Jin Yong-uk | Cast | Actor | Homeroom Teacher |
 Yuki Kashiwagi | Cast | Actress | Ju-yeon |
 Lee You-mi | Cast | Actress | Byun Ji-eun |
 Kim Young | Cast | Actor | Woo-sung |
 Lee Han-seo | Cast | Actress | Chairman Choi's Daughter |
 Kim Min-gue | Cast | Actor | Min-woo |
 Cha Eun-woo | Cast | Actor | Citizen 21 |
 Jeon Hyeon-soo | Cast | Actor | Ghost 1 |
 Dude Harlino | Cast | Hinata | |
Su-hyeon Hong | Cast | Ghost 6 | |
 Sayuri Matsumura | Cast | Actress | So-yeon |
Choi Seo-hyun | Cast | Actress | Student 12 |
Kim Yu-jin | Cast | Citizen 3 | |
 Sakurako Okubo | Cast | Actress | Lia |
 Kim Mi-hwa | Cast | Actress | Citizen 4 |
Sang-sun Kim | Cast | Citizen 10 | |
 So Joo-yeon | Cast | Actress | Eun-ha |
 Rima Matsuda | Cast | Actress | Yoon-hee |
Lee Yeong-eun | Cast | Citizen 13 | |
 Kim Tae-min | Cast | Actor | Dong-il |
 Choi Hee-jin | Cast | Actress | Jeong-yoon |
Park Jin | Cast | Actor | Hae-guk |
Bae So Yeon | Cast | Escape Room Cafe Manager | |
 Kim Hyun-woo | Cast | Actor | Ghost 5 |
Yeo Eun-chae | Cast | Citizen 20 | |
 Lim Han-bin | Cast | Actor | Eun-Sung |
Kyeong-hee Han | Cast | Eun-ha's mom | |
Yoon Ji-won | Cast | Student 14 | |
 Kim Yeong-Gyu | Cast | Actor | Student 29 |
Hyo-jun Park | Cast | Student 7 | |
Si-eun Kim | Cast | Student 20 | |
Kim Min-seong | Cast | Actor | Police Officer 2 |
Kim Young-hoon | Cast | Client at the Internet Cafe 1 | |
 Kang Na-Young | Cast | Citizen 17 | |
Nam Young-ran | Cast | Citizen 18 | |
Han Dong-hoon | Cast | Student 28 | |
Moon Jeong-bin | Cast | Student 8 | |
Sim Mi-so | Cast | Escape Room Cafe Staff | |
Lee A-ri | Cast | Student 18 | |
Choi Mi-rae | Cast | Citizen 16 | |
Hong Hyun-kyeong | Cast | Citizen 19 | |
Seo Ki-wook | Cast | Student at the Internet Cafe 1 | |
Song Shi-yeol | Cast | Citizen 12 | |
Kim Jeong-sook | Cast | Student 1 | |
Min Seon-jae | Cast | Student 4 | |
Hong Ji-eun | Cast | Citizen 15 | |
Gwe Dok-ran | Cast | Citizen 6 | |
Lee Won-sang | Cast | Student 17 | |
Yoon Ji-in | Cast | Student 16 | |
Lee Sang-kang | Cast | Ghost 4 | |
Joo Dong-wook | Cast | Citizen 9 | |
Jeon Hyung-ju | Cast | Citizen 8 | |
Kim Ga-ae | Cast | Ghost 3 | |
Choi Jae-min | Cast | Student 30 | |
Byeon Se-in | Cast | Citizen 1 | |
Park Su-kyeong | Cast | Client at the Internet Cafe 4 | |
Lee Jung-ah | Cast | Student 25 | |
Yoo In-jae | Cast | Master | |
Kim Min-su | Cast | Student 24 | |
Kim Jeong-hwi | Cast | Citizen 11 | |
Yeon Seung-ju | Cast | Student 26 | |
Shin Jae-seung | Cast | Byeong-yoon | |
Park Ji-hye | Cast | Client at the Internet Cafe 3 | |
Kim Hyung-tae | Cast | Student at the Internet Cafe 2 | |
Oh Won-jun | Cast | Student 27 | |
Choi Won-hyuk | Cast | Citizen 14 | |
Seo Kyoung-hoon | Cast | Student 2 | |
Lim Min-sun | Cast | Citizen 7 | |
Kim Hyo-won | Cast | Student 9 | |
Min Da-eun | Cast | Student 31 | |
Seo Min-chae | Cast | Female Teacher | |
Kim Jin-young | Cast | Student 5 | |
Park Ji-yeon | Cast | Client at the Internet Cafe 2 | |
Heo Yeong-cheol | Cast | Citizen 5 | |
Kong Jong-hyeon | Cast | Student 3 | |
Kim Soo-bin | Cast | Student 13 | |
Shin Eun-jung | Cast | Student 22 | |
Seong Won-jeong | Cast | Citizen 2 | |
Lee Dong-gyu | Cast | Student 6 | |
Song Jeong-hyuk | Cast | Student 21 | |
Lee Dong-hee | Cast | Student 11 | |
Lee Ji-won | Cast | Student 19 | |
Oh Hye-jin | Cast | Student 23 | |
Shin Ha-rang | Cast | Ghost 2 | |
Lee Young-ee | Cast | Special Appearance | |
Kim Jeong-sook | Cast | Citizen 22 | |
Lee Yeon-woo | Cast | Student 15 | |
Kim Se-yeon | Cast | Student 32 | |
Kim Da-jin | Cast | Student 10 | |
Sim Kyu | Cast | Police Officer 1 | |
| Person | Type | Job | Role(s) |
