Challenge of the Tiger

Two CIA agents, a kung fu master and a suave womanizer, track the stolen formula for a super-sterility drug from Spain to Hong Kong, battling Neo-Nazi terrorists and a Vietnamese spy ring for its possession.

• 
  Huang Kin-Lung
• 
  Richard Harrison
• 
  Luigi Batzella

• 
  Huang Kin-Lung
  Huang Lung
• 
  Richard Harrison
  Richard Cannon
• 
  Hwang Jang-Lee
  Comrade Yang
• 
  Nadiuska
  Maria
• 
  Brad Harris
  Leopard
• 
  May Hong
  Asian Girl
• 
  Tito García
• 
  Chiang Tao
  "Convict"
• 
  Sharon Shira
  Anna
• 
  Bolo Yeung Sze
  Chang
• 
  Bolo Yeung
  Chang
• 
  Dick Randall
  Dick
• 
  Jon T. Benn
  Head of the Agency (uncredited)
• 
  Chan Ming-Wai
  Thug (uncredited)
• 
  Craig Denault
  Craig Denault (cameo / uncredited)
• 
  Morgan Fairchild
  Morgan Fairchild (uncredited)
• 
  Tsan Hung Fan
  Thug (uncredited)
• 
  David Flynn
  David Flynn (cameo / uncredited)
• 
  Jack Klugman
  Jack Klugman (cameo / uncredited)
• 
  Hsueh-Ming Liao
  Thug (uncredited)
• 
  Mak Wai-Cheung
  Thug (uncredited)