'Monster Cop' Ma Seok-do investigates an illegal online gambling business led by a former STS Baek and an IT genius CEO Chang. Ma proposes an unexpected alliance to Jang and begins hunting down the criminals.
Ma Seok-do
Ma Dong-seok
Baek Chang-gi
Kim Moo-yul
Jang I-soo
Park Ji-hwan
Jang Dong-cheol
Lee Dong-hwi
Han Ji-su
Lee Ju-bin
Jang Tae-su
Lee Beom-soo
Kim Man-jae
Kim Min-jae
Yang Jong-su
Lee Ji-hoon
Jung Da-wit
Kim Do-gun
Kang Nam-su
Kim Shin-bi
Kwon
Hyun Bong-sik
Jo Ji-hoon
Kim Ji-hoon
Ahn
Kim Young-woong
Lee
Ryu Ji-hoon
Cho Sung-jae
Baek Su-ho
Choi Yoo-sung
Bae Jae-won
Jason
Ahn Seong-bong
Salesman
Kim Ho-jun
Li Sang-yong
Jeong In-gi
Commissioner General
Kwon Il-yong
Jin Yeon-ho
Park Bo-kyung
Kim Jin-sook
Kim Soo-jin
Sung-jae's mother
Bae Hae-seon
Detective
Jo Jin-kyul
Detective
Kang Jun-seok
Hotel staff
Min Hyo-kyung
Casino manager
Jo Hyun-sik
Funeral director
Jeong Ji-young
Investor
Kang Shin-chul
Gatekeeper
Jang Tae-min
Drug
Kim Mo-beom
Detective
Choi Hyun-do
Detective
Kim Seon-mun
Yellow-hair
Lee Sang-jin
Drug
Park Geun-jeong
Funeral service
Ko Seo-jeong