Blood

Chief Producer

• 
  Kim Sung Geun

Director

• 
  Ki Min Su
• 
  Lee Jae Hoon

Music Editor

• 
  Lee Pil Ho

Screenwriter

• 
  Park Jae Bum

Main Role

• 
  Ahn Jae Hyun

  Park Ji Sang

  Main Role
• 
  Gu Hye Seon

  Yoo Ri Ta

  Main Role
• 
  Ji Jin Hee

  Lee Jae Uk

  Main Role

Support Role

• 
  Jung Hae In

  Joo Hyun Woo [Ji Sang's friend]

  Support Role
• 
  Kim Gab Soo

  Yoo Seok Joo

  Support Role
• 
  Jin Kyung

  Choi Kyung In [Hospital vice president]

  Support Role
• 
  Son Sook

  Sylvia Ahn [Nun]

  Support Role
• 
  Park Young Rin

  Seo Hye Ri [Taemin Pharmaceutical Headquarters director]

  Support Role
• 
  Kwon Hyun Sang

  Nam Chul Hoon [Vampire; Jae Wook's henchman]

  Support Role
• 
  Lee Ji Hoon

  "J" [Vampire / Jae Uk's henchman]

  Support Role
• 
  Ji Chan

  Do Seong [Hot-blooded vampire]

  Support Role
• 
  Son Soo Hyun

  Min Ga Yeon [Hospital 1st year resident]

  Support Role
• 
  Kang Tae Sung

  Joo In Ho [Vampire; Hye Ri's successor]

  Support Role
• 
  Kim Yoo Suk

  Jung Ji Tae [Hospital Hematoma division manager]

  Support Role
• 
  Jo Jae Yoon

  Woo Il Nam [Chief of surgery]

  Support Role
• 
  Jung Hye Sung

  Choi Soo Eun [Ri Ta's friend / Hospital fellow]

  Support Role
• 
  Jung Suk Yong

  Lee Ho Yong [Surgeon]

  Support Role
• 
  Gong Jung Hwan

  Gerrard Kim [Surgeon]

  Support Role
• 
  Park Joon Myun

  Lee Young Joo [Head nurse]

  Support Role
• 
  Ahn Ji Hwan

  Luuvy [Voice]

  Support Role

Guest Role

• 
  Ki Se Hyung

  [Man in black] (Ep. 20)

  Guest Role
• 
  Jeon Heon Tae

  Gong Ji Bok

  Guest Role
• 
  Kang Dae Hyun

  Son Yeong Gi

  Guest Role
• 
  Yoon In Jo

  Reporter Seo

  Guest Role
• 
  Park Chang Woo

  Choi Han Bin

  Guest Role
• 
  Park Joon Mok

  Kim Sang Gyu

  Guest Role
• 
  Lee Seung Hee

  Lee Seung Hee

  Guest Role
• 
  Kang Eui Shik

  Lee Sung Kyun

  Guest Role
• 
  Nam Myung Ryul

  Jeong Han Soo

  Guest Role
• 
  Jung Chan Bi

  Yoo Ri Ta [Young]

  Guest Role
• 
  Kim Hye Won

  Kim Seok [Nurse]

  Guest Role
• 
  Baek Seung Hwan

  Park Ji Sang [Young]

  Guest Role
• 
  Choi Yoon Joon

  Nam Dong Pal [Alcoholic patient]

  Guest Role
• 
  Yoo Eun Mi

  Choi Soo Yeon [Woo Shik's daughter]

  Guest Role
• 
  Kim Ji Hoon

  Kang Jung Min [Hospital security guard]

  Guest Role
• 
  Kim Tae Young

  Han Man Young [Seok Joo's doctor]

  Guest Role
• 
  Hong Hwa Ri

  Lee Na Jung [Liver cancer patient]

  Guest Role
• 
  Mi Ram

  Jang Yoo Jin [Intellectually disabled patient]

  Guest Role
• 
  Park Joo Mi

  Han Sun Yeong [Stanford Medical School researcher / Ji Sang's mother]

  Guest Role
• 
  Jeon Li Han

  Kim Byung Soo [Hospital 3rd year resident]

  Guest Role
• 
  Jeong Hee Tae

  Choi Woo Shik [End-stage pancreatic cancer patient]

  Guest Role
• 
  Ryu Soo Young

  Park Hyun Seo [Stanford Medical School researcher / Ji Sang's father]

  Guest Role
• 
  Lee Gyu Sub

  [Mobster]

  Guest Role
• 
  Kim Bo Kyung

  [Choi Woo Shik's wife]

  Guest Role
• 
  Hwang In Jun Guest Role
• 
  Yoo Jung Ho Guest Role
• 
  Kim Young Moo Guest Role
• 
  Lee Dong Hoon Guest Role