Famous for his role as Michael Myers in the 1981 horror film Halloween II, he is also well known for serving for more than two decades as Kurt Russell's stunt double.
Early in his career, he performed stunts in several episodes of the television series The Travels of Jaimie McPheeters.
He was the stunt coordinator for the 1985 movie Friday the 13th: A New Beginning.
Born Richard Warlock Leming in Oakley, Ohio, he later settled in Kingsport, Tennessee. He raised three children: Lance, Rhonda, and actor Billy Warlock.
He performed stunts for the Mel Brooks-directed film Robin Hood: Men in Tights.