Gangnam B-Side

Editor

• 
  Kim Sang Bum

Martial Arts Director

• 
  Heo Myung Haeng

Producer

• 
  Han Jae Deok

Screenwriter

• 
  Jo Won Gyu

Screenwriter & Director

• 
  Park Noo Ri

Main Role

• 
  Jo Woo Jin

  Kang Dong U

  Main Role
• 
  Ji Chang Wook

  Yun Gil Ho

  Main Role
• 
  Ha Yoon Kyoung

  Min Seo Jin

  Main Role
• 
  BIBI

  Kim Jae Hui / "Jenny"

  Main Role

Support Role

• 
  Hyun Bong Sik

  Kim Jang Ho

  Support Role
• 
  Oh Ye Ju

  Kang Ye Seo [Dong U's daughter]

  Support Role
• 
  Jung Jae Kwang

  MD Jung Kwon

  Support Role
• 
  Im Sung Jae

  Psyche

  Support Role
• 
  Jung Ga Ram

  No Jun Seo

  Support Role
• 
  Ryu Hye Young

  Seo Ji Su

  Support Role
• 
  Ji Seung Hyun

  Lee Gang Su

  Support Role
• 
  Choi Kwang Il

  Moon Chul Sung

  Support Role
• 
  Kim Do Hyun

  Ju Yun

  Support Role
• 
  Jung Man Sik

  Tak Ju Il

  Support Role
• 
  Park So Ri

  Ryu Hyeon Gyeong

  Support Role
• 
  Yoo Sun

  Sin Ji Hye

  Support Role
• 
  Ok Ja Yeon

  Choi Su In

  Support Role
• 
  Kim Jong Soo

  Choi Hak Gu

  Support Role
• 
  Cha Rae Hyoung

  "K"

  Support Role
• 
  Kim Byung Ok

  Woo Dae Sik [Mayor]

  Support Role
• 
  Yoon Byung Hee

  President Kwon

  Support Role

Guest Role

• 
  Kwak Jin

  [Pocheon Station chief] (Ep. 1)

  Guest Role
• 
  Yang Ji Soo

  [Psychiatrist] (Ep. 1)

  Guest Role
• 
  Jang Eui Don

  [Detective captain] (Ep. 2)

  Guest Role
• 
  Choi Seong Hyuk

  Jwipo (Ep. 2)

  Guest Role
• 
  Hwang Bo Jeong Il

  Seong Bin (Ep. 2, 4)

  Guest Role
• 
  Jung Gi Sub

  [Inspector general] (Ep. 4)

  Guest Role
• 
  Byun Jin Soo

  [Colosseum VIP] (Ep. 4)

  Guest Role
• 
  Ahn Sung Bong

  [Colosseum chief of security] (Ep. 4)

  Guest Role
• 
  Ki Eun Soo

  [Bully student] (Ep. 5)

  Guest Role
• 
  Lee Suk Hyeong

  Choi Bu Gi (Ep. 6)

  Guest Role
• 
  Yoo Dong Hun

  Dioni (Ep. 6)

  Guest Role
• 
  Jeong Ye Seo

  [Escort] (Ep. 6)

  Guest Role
• 
  Park Joo Won

  Lee Jeong Hwa

  Guest Role
• 
  Song Ji Woo

  O Jin Yeong

  Guest Role
• 
  Nam Jin Bok

  Uncle Gil Ho

  Guest Role
• 
  Lee Seo Hwan

  Lee Han Pyeong [Vice minister]

  Guest Role
• 
  Kim Tae Han

  Chief Prosecutor An

  Guest Role
• 
  Jang Won Hyung

  Detective Jang

  Guest Role
• 
  Woo Kang Min

  "FM"

  Guest Role
• 
  Lee Jae Yong

  "K" [Young]

  Guest Role
• 
  Jung Ye Na

  Min Hui

  Guest Role
• 
  Moon Seong Hyun

  Yun Gil Ho [Young]

  Guest Role
• 
  Yoo Sung Joo

  [Chief of staff]

  Guest Role
• 
  Lim Hyun Sung

  [Team leader]

  Guest Role
• 
  Shin Sung Il

  [Detective]

  Guest Role
• 
  Na Joo Ho

  [Detective]

  Guest Role
• 
  Giriboy

  [MD Lemon]

  Guest Role
• 
  Jung Ho Won

  [X-Cross guard]

  Guest Role
• 
  Jung Da Jung

  [Audition girl]

  Guest Role
• 
  Oh Yong Seok

  [Club Hyena entrance guard] (Ep. 2)

  Guest Role
• 
  Choi A Ryeom

  [Good Edu call girl]

  Guest Role
• 
  Gong Jae Kyung

  Madam Baek

  Guest Role

Unknown

• 
  Eum Moon Suk Unknown
• 
  Seo Tae Woong Unknown