Overachievers

Main Role

• 
  Wayne Lai

  Chiang Yuen / "Mike"

  Main Role
• 
  Raymond Wong

  Chung Hiu Yeung / "Hugo"

  Main Role
• 
  Nancy Wu

  Ding Man Chi / "Mandy"

  Main Role
• 
  Maggie Shiu

  Kwan Fa Laai

  Main Role

Support Role

• 
  Edwin Siu

  Yuen Siu Tin

  Support Role
• 
  Power Chan

  Li Chau Kan

  Support Role
• 
  Raymond Cho

  Chiang Shing

  Support Role
• 
  Susanna Kwan

  Li Chau Ping

  Support Role
• 
  Yueh Hua

  Chiang Sing Tin

  Support Role
• 
  Grace Chan

  Chiang Lai / "Abby"

  Support Role
• 
  Sisley Choi

  Ma Siu Ming

  Support Role
• 
  Frederick Cheng

  Ko Heng

  Support Role
• 
  Jason Chan

  Chiang Chun / "Louie"

  Support Role
• 
  Yoyo Chen

  Tong Ching / "Ching Ching"

  Support Role
• 
  Lee Shing Cheong Support Role
• 
  Cheung Kwok Keung Support Role
• 
  Tracy Ip

  Nina

  Support Role
• 
  Becky Lee

  Wen Jia Yu [Sai Gwong's daughter]

  Support Role
• 
  Ali Lee

  Sheh Sze Lam / "Ivy"

  Support Role
• 
  Toby Chan

  Ho Mei Kei / "Kay"

  Support Role
• 
  Willie Wai

  Gan Yan Sin

  Support Role
• 
  Whitney Hui

  Wong San San

  Support Role
• 
  Clayton Li

  A Kit

  Support Role
• 
  Kerry Chan

  Fay

  Support Role
• 
  Vincent Cheung Support Role
• 
  English Tang Support Role
• 
  Choi Kwok Hing

  Tang Lia Feng

  Support Role
• 
  Stephen Ho Support Role
• 
  Lee Hoi Sang Support Role
• 
  Forest Chan Support Role
• 
  Cecilia So Support Role
• 
  Rocky Cheng Support Role
• 
  Andy Sui Support Role
• 
  Chan Wing Chun Support Role
• 
  Amy Ng Support Role
• 
  Lau Kong Support Role
• 
  Leo Tsang Support Role
• 
  Helen Seng Support Role
• 
  Kitterick Yiu

  Ben

  Support Role
• 
  Jonathan Lee Support Role
• 
  Georgina Chan Support Role
• 
  Vincent Lam Support Role
• 
  Yeung Shui Lun Support Role
• 
  Gordon Siu Support Role
• 
  Man Yeung Support Role
• 
  Nicole Leung Support Role
• 
  David Do Support Role
• 
  Suen Kwai Hing Support Role
• 
  Burmie Wong Support Role
• 
  Leo Lee Support Role
• 
  Candice Chiu Support Role
• 
  Ricky Lee Support Role
• 
  Coffee Lam

  Becky

  Support Role
• 
  Lawrence Ng Support Role
• 
  Derek Wong Support Role
• 
  Eddie Ho Support Role
• 
  Albert Cheung Support Role
• 
  Aurora Li Support Role
• 
  Wong Wai Tong Support Role
• 
  Athena Ng Support Role
• 
  Eddie Law Support Role
• 
  Judy Tsang

  Jade

  Support Role
• 
  Lucas Yiu Support Role
• 
  Miguel Choi Support Role
• 
  Kau Cheuk Nang Support Role

Guest Role

• 
  Janice Shum

  [Gan Yan Soon's wife]

  Guest Role
• 
  Alan Tam Guest Role
• 
  Marcus Kwok

  (Eps. 1 & 23)

  Guest Role
• 
  Chloe Nguyen

  (Ep. 8)

  Guest Role
• 
  Cheng Shu Fung Guest Role

Bit part

• 
  Ivana Wong

  Kwan Fa Laai [Young]

  Bit part

Unknown

• 
  Marco Lee Unknown