The Merciless (2017) — Cast
Cast
| Lee Si-hoon | Ram's Subordinate |
| Ryu Kee-san | VIP Stewardess |
| Kim Tae-jeong | The Woman |
| Jo Ki-tae | Sung-hyuk |
| Go Bong-goo | Yul Brenner |
| Sul Kyung-gu | Jae-yeong |
| Jang In-sub | Chul |
| Lee Ji-hoon | Prosecutor |
| Jeon Gwon-ha | Board Member |
| Kim Ki-ho | Ram's Subordinate |
| Jason Scott Nelson | Vlad |
| Moon Ji-yoon | Geun-shik |
| Choi Byung-mo | Choi |
| Jin Sun-kyu | Chief |
| Nam Kee-ae | Hyun-woo |
| Yoon Young-kyun | Jae-yeong |
| Shin So-yul | Beauty |
| Kim Ji-hoon | Byeong-sik |
| Hong In | Gae-ttong |
| Lee Dong-yong | Indrid Cold |
| Lee Dong-Young | Isabella's Russian Bodyguard |
| Kim Hie-won | Gab |
| Kim Ik-tae | Busan |
| Kim Seung-oh | Pil |
| Carson Allen | The Woman |
| Lee Ru-ahn | Beauty |
| Choi Jun-young | Yong |
| Park Kwang-jae | Livin' Large |
| Yoon Yeong-gyun | Ram's Subordinate |
| Park Jun-hyuk | CRPT |
| Huh Joon-ho | Han Solo |
| Yim Si-wan | Hyun-woo |
| Andreas Fronk | Chinese Mafia |
| Park Soo-young | Jang |
| Lee Kyu-ho | Inmate |
| Lee Kyung-young | Chul |
| Ko Dong-hyoung | Stairway Swat |
| Kim Bo-mi | Beauty |
| Jeon Hye-jin | Seo Hye-sook |
| Ju Ye-eun | Selfie |
Crew
| Hwang Hyo-kyun | Special Effects Makeup Artist |
| Yi Jin-hee | Producer |
| Miky Lee | Executive Producer |
| Park Ji-sung | Executive Producer |
| Jeon Young-wook | Still Photographer |
| Shin Dae-yong | VFX Supervisor |
| Jeong Bong-yeon | Stunts |
| Park Yong-ki | Sound Supervisor |
| Kim Bo-mook | Art Direction |
| Cha Sang-do | Stunts |
| Lee Jeon-hyoung | Senior Visual Effects Supervisor |
| Kwon Michelle | Executive Producer |
| Choi Bong-rock | Fight Choreographer |
| Kang Min-woo | Camera Operator |
| Park Jin-young | Digital Intermediate |
| Yun Ji-won | Producer |
| Kim Yun-suk | Props |
| Kim Hong-jip | Music |
| Noh Seung-goog | Set Decoration |
| Park Song-i | Storyboard |
| Park Ju-gang | Sound Supervisor |
| Yun Min-gyu | Stunts |
| Jeong Tae-sung | Executive Producer |
| Kim Seon-wung | Stunts |
| Lee Hyung-bin | Camera Operator |
| Hwang Yong-tae | VFX Supervisor |
| Ryu Jae-hwan | VFX Supervisor |
| Han Ah-rum | Production Design |
| An Eun-mi | Executive Producer |
| Kwon Ji-hoon | Stunts |
| Kim Min-su | Writer |
| Yang Hae-gil | Stunts |
| Kwak Tae-yong | Special Effects Makeup Artist |
| Ko Dong-hun | Production Sound Mixer |
| Cho Hee-ran | Costume Design |
| Jung Won-jun | Editorial Production Assistant |
| Park Cheong-woo | Lighting Director |
| Son Eun-ju | Makeup & Hair |
| Nam Il-yeon | Set Decoration |
| Song Suk-ki | Set Decoration |
| 이동훈 | VFX Supervisor |
| Kim Sang-bum | Editor |
| Byun Sung-hyun | Writer |
| Hong Jang-pyo | Special Effects Supervisor |
| Cho Hyoung-rae | Director of Photography |
| Shon Byeong-su | VFX Artist |
| Jung Hoon | Key Grip |
| Byun Sung-hyun | Director |
| Lee Jin-hee | Music |
| Kim Jae-beom | Editor |