The Beast

Cinematography

• 
  Joo Sung Rim

Composer

• 
  Mowg

Director

• 
  Lee Jung Ho

Editor

• 
  Shin Min Kyung

Executive Producer

• 
  Kim Woo Taek

Production Sound Mixer

• 
  Kim Chang Seop

Stunt Coordinator

• 
  Choi Sung Kyum

Visual Effects

• 
  Lee Sang Heon
• 
  Jeong Seong Wu

Main Role

• 
  Lee Sung Min

  Jeong Han Soo

  Main Role
• 
  Yoo Chea Myung

  Han Min Tae

  Main Role

Support Role

• 
  Jeon Hye Jin

  Choon Bae

  Support Role
• 
  Choi Daniel

  Jong Chan

  Support Role
• 
  Kim Ho Jung

  Madame Oh

  Support Role
• 
  Ok Ja Yeon

  [Jong Chan's wife]

  Support Role
• 
  Lee Hyo Bin

  [Backup Detective]

  Support Role
• 
  Kim Dae Geun

  [Korean-Chinese Wild Dog gang member]

  Support Role
• 
  Park Jae Won

  [Chun Bae's driver]

  Support Role
• 
  Kim Dae Gon

  [Detective, Team 1]

  Support Role
• 
  Han Kyu Won

  [Detective, Team 2]

  Support Role
• 
  Ahn Shi Ha

  Jung Yeon

  Support Role
• 
  Oh Jin Seok

  ['Yakuza' gang]

  Support Role
• 
  Kim Young Sung

  [Homicide Detective, Team 1]

  Support Role
• 
  Kim Byung Chun

  Chief Sung [Achievement mgr.]

  Support Role
• 
  Choi Moon Soo

  [Mother of girl with yellow bracelet]

  Support Role
• 
  Baek In Kwon

  Jo Doo Sik

  Support Role
• 
  Ji Woong Bae

  [Police Commando]

  Support Role
• 
  Lee Sang Hee

  Yeo Mi Young

  Support Role
• 
  Kim Hong Pa

  CEO Jang of Chinatown

  Support Role
• 
  Lee Hyun Kyun

  Chae Pil Kyo

  Support Role
• 
  Lee Jong Shin

  Jo Doo Shik

  Support Role

Guest Role

• 
  Park Hye Sook

  [Nun]

  Guest Role
• 
  Im Ye Eun

  [Tortured woman]

  Guest Role
• 
  Seon Yul U

  [Korean-Chinese Wild Dog gang member]

  Guest Role
• 
  Kim Dae Han

  [Korean-Chinese Wild Dog gang member]

  Guest Role
• 
  Ahn Sung Bong

  [Backup detective]

  Guest Role
• 
  Kim Kwi Seon

  [Elderly informant]

  Guest Role
• 
  Kim Min Song

  [Detective 1 Team 3]

  Guest Role
• 
  Park Bin

  [Evidence room staff]

  Guest Role
• 
  Park Se Ki

  [Korean-Chinese Wild Dog gang member]

  Guest Role
• 
  Lee Seo Hwan

  [Forensic team member]

  Guest Role
• 
  Jung Chan Woo

  [Inspection department staff]

  Guest Role
• 
  Shim Wan Joon

  [Man in black hood @ Regional Investigation unit]

  Guest Role
• 
  Park Tae Sung

  [Prison officer]

  Guest Role
• 
  Jeon Kwon Ha

  [Thai drug ring member]

  Guest Role
• 
  Kim Man Gi

  [Backup detective]

  Guest Role
• 
  Jang Nam Boo

  {Naked Man} Kim Nam Chul

  Guest Role

Bit part

• 
  Yoo Byung Hoon Bit part
• 
  Kim Chul Hwan Bit part
• 
  Kim Man Ho

  [Thai gangster]

  Bit part
• 
  Moon Soon Joo

  [Team 2 Detective #1]

  Bit part
• 
  Kim Eun Hye

  [Female witness]

  Bit part
• 
  Lee Jae Hyuk

  [Big guy #1 from White-hair gang]

  Bit part

Unknown

• 
  Kang Chae Bin Unknown