As an actor, American-born Greydon Clark has largely been confined to biker flicks and #92;horror cheapies like Dracula vs. Frankenstein (1971). A director since 1958, Clark has remained in the low-budget #92;exploitation field. While his body of work, which includes Satan's Cheerleaders (1977), Angel's Brigade (1979), Joy Sticks (1983), and Mad Dog Coll (1993), will never come up for consideration before the Oscar committee, Clark's films have almost invariably posted big box-office profits. On the 1977 Hi Riders, Clark doubled as director and screenwriter. ~ Hal Erickson, All Movie Guide