Devilish Joy

Director

• 
  Kim Ga Ram

Screenwriter

• 
  Choi Ji Yeon

Main Role

• 
  Choi Jin Hyuk

  Gong Ma Sung

  Main Role
• 
  Song Ha Yoon

  Joo Ki Beum

  Main Role
• 
  Lee Ho Won

  Sung Ki Joon

  Main Role
• 
  Lee Ju Yeon

  Lee Ha Im

  Main Role

Support Role

• 
  Lee Su Ji

  Go Nan Joo [Ki Beum's friend]

  Support Role
• 
  Kim Min Sang

  Doctor Yoon [Ma Sung's doctor]

  Support Role
• 
  Yang Byeong Yeol

  Joo Ja Rang [Ki Beum's brother]

  Support Role
• 
  Kim Ji Young

  Joo Sa Rang [Ki Beum's sister]

  Support Role
• 
  Oh Gwang Rok

  Joo Man Shik [Ki Beum's father]

  Support Role
• 
  Jeon Soo Kyung

  Gong Jin Yang [Ma Sung's aunt]

  Support Role
• 
  Jung Soo Kyo

  Kim Beom Soo [CEO]

  Support Role
• 
  Jang In Sub

  Yang Woo Jin [Ma Sung's secretary]

  Support Role
• 
  Ahn Se Ha

  Myung Seok Hwan

  Support Role
• 
  Jung Jae Sung

  Jang Uk Jin [Gi Jun's boss]

  Support Role
• 
  Jeon Hyun Sook

  Gong Jin Joo [Ma Sung's aunt]

  Support Role
• 
  Kim Do Yeon

  Gong Jin Dan [Ma Sung's aunt]

  Support Role
• 
  Joo Jae Hoo

  Jae Min [Ki Joon's manager]

  Support Role
• 
  Lee Woo Joo

  [Ma Sung's friend]

  Support Role
• 
  Jung Ae Hwa Support Role
• 
  Ahn Da Eun Support Role

Guest Role

• 
  Kwon Hyuk Soo

  Kim Byeong Tae [Director] (Ep. 1-2)

  Guest Role
• 
  Choi Seung Hoon

  Kong Ma Seong [Young]

  Guest Role
• 
  Seo Yun Hyuk

  Sung Ki Joon [Young]

  Guest Role
• 
  Park Soo Young

  Kang Song Hwa [TN Group's daughter]

  Guest Role
• 
  Lee Jung Hyuk

  Min Hyung Joon

  Guest Role
• 
  Myung Seok Geun

  [Doctor]

  Guest Role
• 
  Jung Kang Hee

  [Performer for show 'Star Survival']

  Guest Role
• 
  Kim Joo Ah

  [Art gallery director]

  Guest Role
• 
  In Sung Ho

  [Fisherman]

  Guest Role
• 
  Gi Yeon Ho

  [Grandfather]

  Guest Role
• 
  Seo Eun Yool

  Sung Ki Joon [Young]

  Guest Role
• 
  Jin Hyun Kwang

  [Prosecutor]

  Guest Role
• 
  Shin Sung Min Guest Role
• 
  Park Mi Ri

  [Cafe female customer 1]

  Guest Role
• 
  Park So Yi

  Joo Ki Beum [Young]

  Guest Role
• 
  Park Joon Soo

  [Bus passenger]

  Guest Role
• 
  Jung Myung Joon

  [Fountain Pen Shop staff]

  Guest Role
• 
  Nam Sung Joon

  [Sunwoo Hospital neurologist]

  Guest Role
• 
  Yoon Seol Ah

  Gong Jin Yeong

  Guest Role
• 
  Kong Jin Seo

  [Idol]

  Guest Role
• 
  Jeon Jae Hong Guest Role
• 
  Jang Yu Jin

  [Cafe staff]

  Guest Role
• 
  Ho Sol Hee

  Hyo Won

  Guest Role
• 
  Moon Chang Jun

  [Staff]

  Guest Role
• 
  Lee Ga Won

  Jin So Young

  Guest Role
• 
  Kwon Chan Min

  [Assistant director]

  Guest Role
• 
  Lee Jung Woo Guest Role
• 
  Kim Jung Han

  [Chinese police]

  Guest Role

Unknown

• 
  Kang Hak Soo Unknown
• 
  Kang Seong Hwa Unknown
• 
  Richard Kim Unknown
• 
  Han Min Yeop Unknown
• 
  Kim Jin Hyeon Unknown