 Actor Dick Miller (I) (qv), a Roger Corman (qv) regular, was  scheduled to play the title role, but writer  R. Wright Campbell (qv) kept pushing for his brother,  William Campbell (I) (qv), to get it and began tailoring the  script to emphasize his brothers strengths. To avoid internal  squabbling, Corman assigned the role to Charles Bronson (qv).