Composer
Director
Executive Producer
Screenwriter
Main Role
- Yoo Seung Ho Main Role
- Park Sung Woong Main Role
- Namkoong Min Main Role
- Park Min Young Main Role
- Jung Hye Sung Main Role
Support Role
- Lee Won JongSuk Joo Il [Gang leader]Support Role
- Jun Kwang RyulSeo Jae Hyuk [Jin Woo's father]Support Role
- Lee Si EonAhn Soo Bum [Gyu Man's righthand man]Support Role
- Uhm Hyo SubHong Moo Suk [Prosecutor]Support Role
- Song Young KyuTak Young Jin [Prosecutor]Support Role
- Kim Young Woong Support Role
- Bang Joon SeoLee Yeon Ji [In Ah's sister]Support Role
- Park Hyun SookKim Young Seon [In Ah's mother]Support Role
- Jung In KiLee Hyun Jong [In Ah's father]Support Role
- Kim Ji HoonPyun Sang Ho [Dong Ho's righthand man]Support Role
- Han Bo BaeOh Jung Ah [Jin Woo's neighbor]Support Role
- Kim Jin WooKang Suk Gyu [Judge]Support Role
- Han Jin HeeNam Il Ho [Group chairman]Support Role
- Lee Jung EunYeon Bo Mi [Jin Woo's aide]Support Role
- Kim Hyung BeomSong Jae Ik [Public defender]Support Role
- Shin Hyun SooBae Chul JooSupport Role
- Lee Kang WookKim ChanSupport Role
- Lee Gun HeePark Dong Ho [Young]Support Role
- Lee Gyu Sub[Gang member]Support Role
- Cho Hye JinPark Min HeeSupport Role
Guest Role
- Lee Dong Jin[MC] (Ep.1)Guest Role
- Lee Sol Gu[Gang boss] (Ep. 2)Guest Role
- Jung Dong Gyu[One of the directors in Il Ho group] (Ep.5)Guest Role
- Lee Shi AhKim Han Na (Ep. 5-6)Guest Role
- Shin Jae HaSeol Min Soo [Son of Lightbulb co. owner]Guest Role
- Maeng Sang HoonOh Sung Taek [Jung Ah's father]Guest Role
- Kim Jung SeokBae Jeong Sik [Detective]Guest Role
- Jung Kyu Soo[Min Soo's father]Guest Role
- Nam Myung RyulKang Man Soo [Vice president]Guest Role
- Lee Seung HyungLee Jung Hoon [Psychiatrist]Guest Role
- Jung Won Joong[Judge]Guest Role
- So Hee JungLee Hye Sun [Jin Woo's mother]Guest Role
- Keum Dong HyunPark Kyung Soo [Dong Ho's father]\ (Ep. 2)Guest Role
- Yoon Gyung Ho[Scorpion tattooed killer]Guest Role
- Seo Jin WookPark Dong Jin [Prison doctor]Guest Role
- Oh Na RaChae Jin Kyung [Prosecutor]Guest Role
- Lee ChangHam Ji SukGuest Role
- Ki Se HyungManager GeumGuest Role
- Kim Byung ChunYang Hyun Soo [President]Guest Role
- Kim Ik TaeCEO HaGuest Role
- Jung Yoo MinSong Ha YoungGuest Role
- Sung Chang HoonGo Kwang Il [Prosecutor] (Ep. 17-18)Guest Role
- Kim Hyeon BinSeo Jin Woo [Young]Guest Role
- Jeon Se Hyun[Dong Ho's helper]Guest Role
- Geum Kwang San[Seok Joo Il's man]Guest Role
- Lee Gyu Ho[Gang member] (Ep 2)Guest Role
- Park Joon Suk[Drug broker] (Ep.14-20)Guest Role
- Hwang Bo Jeong Il[Park Dong Ho's subordinate]Guest Role
- Jo Jung Shik[News Anchor] (Ep.8)Guest Role
- Jung Nan Hee[Juror]Guest Role
- Hwang Do Yoon Guest Role
Unknown
- Kim Kyung Ryong Unknown
- Kim Seung Hoon Unknown
- Jung Kang Hee Unknown
- Seo Wang Seok Unknown
- Yoo Jang Young Unknown
- Han Dam Hee Unknown
- Min Kyung Jin Unknown
- Baek So Mi Unknown
- Bang Jee Min Unknown
- Son Jung Rim Unknown
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