On the Line

Cinematography

• 
  Lee Seon Yeong

Composer

• 
  Kim Jun Sung

Director

• 
  Kim Gok
• 
  Kim Sun

Editor

• 
  Shin Min Kyung

Producer

• 
  Min Kyu Dong

Production Sound Mixer

• 
  Lee Soon Sung
• 
  Gong Tae Won

Main Role

• 
  Byun Yo Han

  Seo Joon

  Main Role
• 
  Kim Mu Yeol

  Gwak Pro

  Main Role
• 
  Kim Hee Won

  Lee Kyu Ho

  Main Role
• 
  Park Myung Hoon

  Chief Cheon

  Main Role

Support Role

• 
  Lee Joo Young

  Kkang Chil [Hacker]

  Support Role
• 
  Lee Kyu Sung

  [Youngest voice]

  Support Role
• 
  Ok Ja Yeon

  [Intellectual #1]

  Support Role
• 
  Moon Dong Hyeok

  [Busan recruiter with tattoo]

  Support Role
• 
  Yoon Byung Hee

  [Voice #2]

  Support Role
• 
  Jo Jae Yun

  Deok Pal

  Support Role
• 
  Lee Woon San

  [Management manager]

  Support Role
• 
  Yoon Jong Seok

  [Intellectual #2]

  Support Role
• 
  Sung Do Hyun

  [Intellectual #3]

  Support Role
• 
  Jo Hyun Sik

  [Voice #1]

  Support Role
• 
  Kim Ga Young

  [Voice #3]

  Support Role
• 
  Park Jin Soo

  [Voice #4]

  Support Role
• 
  Hong Kyung

  [Job seeker]

  Support Role
• 
  Ri Min

  Mr. Jang

  Support Role

Guest Role

• 
  Won Jin A

  Mi Yeon [Seo Joon's wife]

  Guest Role
• 
  Choi Byung Mo

  Park Jin Jang

  Guest Role
• 
  Son Jong Hak

  [Site manager]

  Guest Role
• 
  Min Sung Wook

  Jang Kyung Pil

  Guest Role
• 
  Son Byung Ho

  Mr. Hwang

  Guest Role
• 
  Ki Joo Bong

  Joh Jang

  Guest Role
• 
  Cha Soon Bae

  [Police chief]

  Guest Role

Bit part

• 
  Choi Hong Lag

  [Deok Pal's subordinate]

  Bit part
• 
  Lee Shi Hoo

  [Chinese Public Security team]

  Bit part
• 
  Kim Tae Hyang

  [Doctor]

  Bit part
• 
  Choi Ji Yeon

  [Voice phishing victim]

  Bit part
• 
  Park Gwang Jae

  [Manpower office big man]

  Bit part
• 
  Jung Yeong Gi

  [Shooking voice]

  Bit part
• 
  Baek Woo Young

  [Job seeker victim]

  Bit part
• 
  Seo Mun Ho

  [Call center voice]

  Bit part
• 
  Hong Seung Il

  Chief Min [Department head]

  Bit part
• 
  Ryu Seong Hyeon

  [DB broker]

  Bit part
• 
  Yoon Seul

  [Construction office manager]

  Bit part
• 
  Yoon Dae Yeol

  [Chief Cheon's subordinate]

  Bit part
• 
  Yoon Young Kyun

  [Chief Cheon's subordinate]

  Bit part
• 
  Jo Joon

  [Call center manager]

  Bit part
• 
  Yoon Bong Gil

  [Call center manager]

  Bit part
• 
  Kang Deuk Jong

  [Call center supervisor]

  Bit part
• 
  Yang Ji Soo

  [Call center surveillant]

  Bit part
• 
  Yoon Jung Ro

  [Voice phishing writer]

  Bit part
• 
  Kim Min Shik

  [Voice phishing writer]

  Bit part
• 
  Yoo Jung Ho

  [Call center technician]

  Bit part
• 
  Jo Yong Geun

  [Detective]

  Bit part
• 
  Kim Hee Sang

  [Detective]

  Bit part
• 
  Joo Myung Chul

  [Tattoo shop boss]

  Bit part
• 
  Lee Geun Hoo

  [Police]

  Bit part
• 
  Lee Dong Yong

  [Construction site worker]

  Bit part
• 
  Choi Jae Hoon

  [Construction site worker]

  Bit part
• 
  Park Ji Hoon

  [Busan recruiter]

  Bit part
• 
  Noh Jae Hoon

  [Busan recruiter]

  Bit part
• 
  Kim Gun

  [Local withdrawal]

  Bit part
• 
  Lim Yo Han

  [Job seeker victim]

  Bit part
• 
  Kim Yeon Kyo

  [Job seeker victim]

  Bit part
• 
  Park Jin Ah

  [Sales office accounting clerk]

  Bit part
• 
  Shim So Young

  [China Ironworks accountant]

  Bit part
• 
  Nam Tae Woo

  [Manpower office big man]

  Bit part
• 
  Moon Jung Dae

  [Chinese moneychanger]

  Bit part
• 
  Kim Geun Yeong

  [Seo Joon's mother-in-law]

  Bit part
• 
  Kwak Gi Hun

  [Deok Pal's subordinate]

  Bit part
• 
  Won Jin Ho

  [Deok Pal's henchman #2]

  Bit part
• 
  Lee Na Hyun

  [Voice #10]

  Bit part

Voice Actor

• 
  Park Jin Su Voice Actor