Kill It

Director

• 
  Ahn Ji Sook
• 
  Nam Sung Woo

Screenwriter

• 
  Choi Myung Jin
• 
  Son Hyun Soo

Main Role

• 
  Nana

  Do Hyun Jin / Lee Young Eun

  Main Role
• 
  Jang Ki Yong

  Kim Soo Hyun / Number 88

  Main Role
• 
  Roh Jeong Eui

  Kang Seul Gi

  Main Role

Support Role

• 
  Lee Jae Won

  Philip Ahn [Soo Hyun's Hitman Broker]

  Support Role
• 
  Jung Hae Kyun

  Do Jae Hwan [Hyun Jin's Father]

  Support Role
• 
  Ji Il Joo

  Yoon Jung Woo [Prosecutor]

  Support Role
• 
  Kim Hyun Mok

  Lee Yoon Seung [Hyun Jin's colleague]

  Support Role
• 
  Jung Jae Eun

  Jung So Yeon [Jae Hwan's wife]

  Support Role
• 
  Lee Dong Kyu

  Park Tae Soo [Jae Hwan's minion]

  Support Role
• 
  Ahn Se Ho

  Jang Kwang Jun [Forensic Scientist]

  Support Role
• 
  Jeon Jin Ki

  Joo Young Hoon [Doctor]

  Support Role
• 
  Ok Go Woon

  Yoon Ji Hye [Jae Hwan's Secretary]

  Support Role
• 
  Kwak Ja Hyung

  Park Seong Ho [Assistant inspector]

  Support Role
• 
  Kim Sun Bin

  [Jae Hwan's minion]

  Support Role
• 
  Jo Han Chul

  Ko Hyeon Woo [Researcher]

  Support Role
• 
  Son Kwang Eop

  Seo Won Suk [Assemblyman]

  Support Role
• 
  Park Geun Soo

  Lee Sang Yeon

  Support Role
• 
  Kim Won Shik

  [Seul Gi's uncle]

  Support Role
• 
  Jang Eui Don

  Kim Jong Goo

  Support Role
• 
  Lee Kyung Oh

  Section Chief Lee

  Support Role
• 
  Kim Joo Heon

  Min Hyuk

  Support Role
• 
  Ju Ah Yeon

  Ha Young

  Support Role

Guest Role

• 
  David McInnis

  Pavel [Killer/Soo Hyun's Adoptive Father] (Ep. 1, 4)

  Guest Role
• 
  Robin Deiana

  Karimov II [Russian Mafia] (Ep.1-4)

  Guest Role
• 
  Moon Woo Jin

  Kim Soo Hyun [Young]

  Guest Role
• 
  Seo Kwang Jae

  [Chief, Special Investigation Team] (Ep. 1, 7)

  Guest Role
• 
  Joo Ye Rim

  Kang Seul Gi [Young]

  Guest Role
• 
  Lee Dong Yong

  [Hyun Jin's informant]

  Guest Role
• 
  Lee Yoon Sang

  [Public Prosecutor General] (Ep.12)

  Guest Role
• 
  Kang Moon Kyung Guest Role
• 
  Son Yeong Soon

  [Street stall grandmother]

  Guest Role
• 
  Yoo Dam Yeon Guest Role
• 
  Han Hye Ji

  [Nurse]

  Guest Role
• 
  Lee Soo Yong

  Lee Chung Won [Gang Boss] (Ep 2)

  Guest Role
• 
  Uhm Chae Young

  No.188 (ep.9,11)

  Guest Role
• 
  Go Do Yeon

  [Granddaughter]

  Guest Role
• 
  Park Se Hoon

  [Motorcycle deliveryman

  Guest Role
• 
  Ok Il Jae

  [Chauffeur]

  Guest Role
• 
  Choi Myung Bin

  Do Hyun Jin [Young] (Ep. 6)

  Guest Role
• 
  Kim I San

  [Program host]

  Guest Role

Bit part

• 
  Jo Ha Seok

  gangster member

  Bit part

Unknown

• 
  Yul Chan Unknown
• 
  Kim Min Kyung Unknown
• 
  Baek Kang Unknown
• 
  Bae Ha Neul Unknown