Whispering Corridors 6: The Humming (2021) — Cast
Cast
| Kim Hyeon-soo | young Bell |
| Seo Hye-won | Mi Biao |
| Kim Seo-hyung | Eun-sil |
| Choi Ri | So |
| BIBI | young Bell |
| Park Se-hyun | Jae-yeong |
| Lee Ji-won | Mummy ji |
| Kwon Hae-hyo | Kwang |
| Lee Joo-sil | Grandmother |
| Jang Won-hyung | Mook |
| Chae Won-bin | Alvy's Classmate |
| Ha Mheen | Yeon-Wha |
| Kim Sung-nyeo | Gong Liangguo |
| Park Yun-ho | Taek |
| Jung Da-won | Hong |
| Sung Gyu-chan | Police Officer |
| Shin Yeon-mi | Choi |
Crew
| Hong Jang-pyo | Special Effects Supervisor |
| Kim Gwang-min | Lighting Director |
| Kim Yong-gyun | Sound Supervisor |
| Lee Choon-yun | Executive Producer |
| Park Byung-deok | Still Photographer |
| Shin Seon-hwa | Art Direction |
| Lee Mi-young | Director |
| Kim Da-jung | Costume Design |
| Choi Min-seon | Makeup & Hair |
| Oh Se-yeong | Martial Arts Choreographer |
| Jung Jin-wook | Production Sound Mixer |
| Woo Je-hyung | Set Decoration |
| Kim Mi-mi | Boom Operator |
| Kim Seong-hwan | VFX Supervisor |
| Sung Seung-taek | Director of Photography |
| Cho Sung-woo | Original Music Composer |
| Park Eun-ha | Producer |
| Kwon Yoon-gyeong | Colorist |
| Lee Tae-ho | Stunts |
| No Hyeong-gi | Stunts |
| Park Gok-ji | Editor |
| Lee Mi-young | Writer |
| Lee Yoon-hee | Editor |
| Jeon Gyeong-ran | Production Design |
| Lee Sang-jin | Casting Director |
| Koh Jae-young | Art Direction |
| Jang Jae-wook | Stunts |