Extreme Job

Composer

• 
  Kim Tae Seong

Editor

• 
  Nam Na Yeong

Executive Producer

• 
  Kim Sung Hwan

Music Editor

• 
  Jeong Sang Woo
• 
  Chong Jee Hoon

Producer

• 
  Go Dae Suk

Screenwriter

• 
  Bae Se Young
• 
  Moon Choong Il
• 
  Heo Da Jung

Screenwriter & Director

• 
  Lee Byung Hun

Visual Effects

• 
  Kim Jeong Min
• 
  Lee Jeong Hyeon

Main Role

• 
  Ryu Seung Ryong

  Go Sang Gi

  Main Role
• 
  Lee Ha Nee

  Jang Yeon Soo

  Main Role
• 
  Jin Sun Kyu

  Ma Bong Pal

  Main Role
• 
  Lee Dong Hwi

  Kim Young Ho

  Main Role
• 
  Gong Myung

  Kim Jae Hoon

  Main Role

Support Role

• 
  Shin Ha Kyun

  Lee Moo Bae [Drug dealer]

  Support Role
• 
  Oh Jung Se

  Ted Chang / Chang Sik [Gangster]

  Support Role
• 
  Kim Eui Sung

  [Police Superintendent]

  Support Role
• 
  Song Young Gyu

  Chief Choi [Police Captain]

  Support Role
• 
  Yang Hyun Min

  Hong Sang Pil [Moo Bae's right-man]

  Support Role
• 
  Heo Jun Seok

  Jung [Drug broker]

  Support Role
• 
  Jang Jin Hee

  Sun Hee [Moo Bae's bodyguard]

  Support Role
• 
  Park Jae Hong

  [Lee Moo Bae's gang member #1]

  Support Role
• 
  Lee Joong Ok

  Hwan Dong [Gambler]

  Support Role
• 
  Oh Min Joon

  [Ted Chang's subordinate #2]

  Support Role
• 
  Kim Jong Soo

  [Chicken restaurant owner]

  Support Role
• 
  Shin Shin Ae

  [3rd floor middle-aged woman]

  Support Role
• 
  Kim Ji Young

  [Squad Chief Go's wife]

  Support Role
• 
  Tae Won Seok

  [Ansan Branch Gang member]

  Support Role
• 
  Cho Joo Han

  [Lee Moo Bae's gang member #4]

  Support Role

Guest Role

• 
  Lee Dong Yong

  [playing Mahjong at Nail Art Shop]

  Guest Role
• 
  Kim Kang Hyun

  PD Heo

  Guest Role
• 
  Seo Ho Chul

  [Ansan Branch gang member #1]

  Guest Role
• 
  Jung Woo Young

  [Shiheung branch delivery man]

  Guest Role

Bit part

• 
  Ji Chan

  [Mapo police station felony crime squad 2]

  Bit part
• 
  Jo Hyun Sook

  [Gwangju Branch 'Aunty']

  Bit part
• 
  Go Bong Goo

  [Daegu branch organization member #1]

  Bit part
• 
  Na Chul

  [Ansan branch gang member]

  Bit part
• 
  Park Jae Hong

  [Mapo police station felony crime squad #2]

  Bit part
• 
  Jang Ji Woong

  [Gang member]

  Bit part
• 
  Han Joon Woo

  [Detective #1]

  Bit part
• 
  Kwon Ji Hoon

  [Lee Moo Bae's organization member #3]

  Bit part
• 
  Jung Jae Kwang

  [Gungpyeong Port uniformed police]

  Bit part
• 
  Kim Myung Joon

  Head of department

  Bit part
• 
  Choi Kwang Won

  [Uniform policeman #2]

  Bit part
• 
  Ahn Sung Bong

  [Moo Bae's gang member #2]

  Bit part
• 
  Kim Yun Bae

  [Daegu branch organization member #2]

  Bit part
• 
  Choi Yun Seol

  [Chicken restaurant couple - woman]

  Bit part
• 
  Lee Ha Nui

  Shopping district man

  Bit part
• 
  Jang Kyug Su

  [Busan Branch crew member #2]

  Bit part
• 
  Lee Woon San

  [Man at Apartment Complex]

  Bit part
• 
  Lee Sang Chan

  [Member 3 of Gwangju Branch]

  Bit part
• 
  Kim Nam Woo

  [Ansan branch male guest]

  Bit part
• 
  Im Yu Ran

  [Mercedes Benz woman]

  Bit part
• 
  Yoo Je Yoon

  [Camera man]

  Bit part
• 
  Jung Won Chang

  [Customer]

  Bit part
• 
  Choi Jung Eun

  [Class President's Daughter]

  Bit part
• 
  Han Dong Hee

  [Nail art shop mah-jong man #3]

  Bit part
• 
  Park Jin Ah Bit part
• 
  Lee Wang Soo

  [Gwangju branch gang member #2]

  Bit part
• 
  Kwon Tae Ho

  [Nail art shop imaginary police commando 2]

  Bit part

Unknown

• 
  Han Ye Ju Unknown