[1] Characterised by his martial arts skills, long wavy hair, and a prominent Fu Manchu moustache, he has had a number of small but memorable roles in many popular action films, including Lethal Weapon (1987) with Mel Gibson and Danny Glover; Die Hard (1988) with Bruce Willis; Death Warrant (1990) with Jean-Claude Van Damme; and Rapid Fire (1992) with Brandon Lee.
[8] His credits include Lethal Weapon, Die Hard, Joshua Tree, Big Trouble in Little China, The Scorpion King, and They Live.
In 2003, Leong lampooned himself as well as the Hollywood tradition of actor and director 'reels' by starring in screenwriter David Callaham's "Writer's Reel.
"[9] In the five-minute short film, Leong portrayed Callaham going through a typical day in the life of a writer.
[10] As a stuntman, Leong was involved with the production of numerous films including The Golden Child, Last Action Hero, Roland Emmerich's Godzilla, Tim Burton's Planet of the Apes, and Daredevil.