Blue Veins

Main Role

• 
  Kevin Cheng

  Ying Wuet Tseuk

  Main Role
• 
  Kay Tse

  Lam Mung Nam

  Main Role
• 
  Grace Chan

  Lam Mung Yiu / "YoYo" | Sheung Koon Kam Ling

  Main Role

Support Role

• 
  Eddie Kwan

  Pong Ying Tin

  Support Role
• 
  Moon Lau

  Lau Ying Yi / "Rosa"

  Support Role
• 
  Joel Chan

  Ling Fung

  Support Role
• 
  Wong You Nam

  Ho Nin

  Support Role
• 
  Billy Luk

  Kwan Ting Si / C Kwan

  Support Role
• 
  Helena Law

  Lam Wong Chi Hung

  Support Role
• 
  Hubert Wu

  Pong Kit

  Support Role
• 
  Anjaylia Chan

  Ho Yuet

  Support Role
• 
  Chloe Nguyen

  Lee Sze Ya / "Xenia"

  Support Role
• 
  Winki Lai

  Yau Ling Mui / "Ghost"

  Support Role
• 
  Chun Wong

  Kam Kin

  Support Role
• 
  Andy Sui Support Role
• 
  Ng Pui Yu Support Role
• 
  Choi Kwok Hing

  Boxing boss

  Support Role
• 
  Jones Lee Support Role
• 
  Yeung Chiu Hoi Support Role
• 
  Alex Yung Support Role
• 
  Cayley Mak Support Role
• 
  Jim Tang Support Role
• 
  Sunny Dai Support Role
• 
  Athena Ng Support Role
• 
  Terence Tung Support Role
• 
  Louis Szeto Support Role
• 
  Brian Burrell Support Role
• 
  Leo Lee Support Role
• 
  Judy Tsang Support Role
• 
  Milkson Fong Support Role
• 
  Cheung Sze Yan Support Role
• 
  Au Hin Wai

  Master Niu Jim Buk

  Support Role
• 
  Dolby Kwan Support Role
• 
  Doris Chow Support Role
• 
  Hebe Chan Support Role
• 
  Adrien Yau Support Role
• 
  Vincent Lam Support Role
• 
  Mandy Lam Support Role
• 
  Vincent Cheung Support Role
• 
  Wong Wai Tong Support Role
• 
  Calvin Chan Support Role
• 
  Leo Tsang Support Role
• 
  Ho Chun Hin Support Role
• 
  Osanna Chiu

  [Nurse] | [Young woman]

  Support Role
• 
  Kimmi Tsui Support Role
• 
  Lucas Yiu Support Role
• 
  Shally Tsang Support Role
• 
  Kitterick Yiu Support Role
• 
  Ray Lo

  Raymond

  Support Role
• 
  Man Yeung Support Role

Guest Role

• 
  Jeannie Chan

  Yuen Bing

  Guest Role
• 
  C Kwan Guest Role
• 
  Alan Wan Guest Role
• 
  Mina Kwok Guest Role
• 
  Vicky Chan

  [Young woman (Present/ prostitute (Past)](Ep.27,32)

  Guest Role
• 
  Kerry Chan Guest Role
• 
  Kiko Leung

  [Waitress]

  Guest Role
• 
  Deborah Poon

  (Ep. 24)

  Guest Role
• 
  Oscar Li

  Ngai Gang (Ep. 1, 6-7, 11, 16)

  Guest Role
• 
  Phoebe Chow

  [Chan Siu Ming's lover] (Ep. 11)

  Guest Role
• 
  Derek Wong Guest Role
• 
  Alan Tam Guest Role
• 
  Snow Suen Guest Role
• 
  Fanny Lee Guest Role
• 
  Helen Seng Guest Role
• 
  Lo Jun Fung

  [Flying Tiger team member] (Ep. 16) | [Yuan Dynasty soldier] (Ep. 33)

  Guest Role
• 
  Bobo Hoi Guest Role
• 
  Dickson Wong Guest Role
• 
  Jason Sze

  [Member of Muay Thai Society / Ming soldier]

  Guest Role
• 
  Alycia Chan Guest Role
• 
  Tse Ho Yat

  [Ruthless bandit] (Ep. 16) | [Ming army member] (Ep. 33)

  Guest Role
• 
  Aurora Li Guest Role
• 
  Mark Ma Guest Role
• 
  William Chu Guest Role

Unknown

• 
  Darren Wong Unknown
• 
  Keith Mok Unknown
• 
  Kinlas Chan Unknown
• 
  Terrence Huang Unknown
• 
  Marco Lee Unknown
• 
  Helen Ng Unknown
• 
  Jenny Wong Unknown
• 
  Andy Wong Unknown
• 
  Andrew Chan Unknown
• 
  Ally Tse

  [Woman]

  Unknown

Bit part

• 
  Ivana Wong

  [Prostitute]

  Bit part
• 
  Miguel Choi Bit part
• 
  Burmie Wong

  [Diner] (Ep. 2, 16)

  Bit part
• 
  Hero Yuen Bit part
• 
  Jonathan Lee Bit part