His martial arts training began in the mid-1950s, where he later trained alongside Bruce Lee in Hong Kong and was nicknamed, “The Black Dragon”. Van Clief was a student of Goju-Ryu Masters Peter Urban, Frank Ruiz, and Moses Powell, as well as WingTsun founder Leung Ting Modern Arnis (Remy Presas) Brazilian jiu-jitsu (Joe Moreira).
On December 16, 1994, he competed in the 4th Ultimate Fighting Championship at age 51 against Brazilian jiu-jitsu champion Royce Gracie.
Van Clief is an author and creator of several instructional books and video recordings, as well as a film choreographer and actor appearing in several films. Ron continues to conduct seminars and attend training with his son in Brazilian Jiu-Jitsu and is still actively competing in champions as he approaches 80 yrs.