Greydon Clark was born on February 7th, 1943 in Niles, Michigan. Clark attended Valparaiso University near Chicago and studied acting with coach John Morley. He supported himself as a door-to-door salesman prior to breaking into the movie business.
Clark began his cinematic career as an actor in several enjoyably lowbrow exploitation features for legendary Grade-Z director Al Adamson; he gave a memorably offbeat performance as wacky drugged-out biker Acid in the splendidly sleazy Satan's Sadists (Greydon also wrote the script for this movie under the pseudonym "Dennis Wayne"). Clark also appeared in Hell's Bloody Devils and the laughably lousy Dracula vs. Frankenstein for Adamson.
Greydon has directed an entertainingly diverse array of pleasingly lowbrow low-budget drive-in pictures and straight-to-video offerings from the early 70s up until the late 90s; they include the trashy blaxploitation double whammies The Bad Bunch and Black Shampoo, the silly Satan's Cheerleaders, the nifty sci-fi/horror item Without Warning, the amusing slasher spoof Wacko, the hilariously raunchy Joysticks, the uproariously awful killer mutant cat camp hoot Uninvited, and the especially atrocious Skinheads. In addition to directing, Clark often writes and produces his own movies and sometimes essays small roles in his films. Greydon both wrote the script and pops up in a minor part in the fun supernatural revenge opus "Psychic Killer." His late actress wife Jacqueline Cole appears in several of his films.
In October of 2013, Clark published his autobiography "On the Cheap: My Life in Low Budget Film Making". The book not only covered the production of his films but also documented in surprising detail how his films were financed and distributed. Even his use of tax shelters was explained. The reader gets a complete understanding of how and why the industry produces this kind of film.
- At the beginning of Final Justice, Servo mentions that Greydon Clark was the producer of Hobgoblins. Clark is not listed anywhere in the credits of Hobgoblins, so Servo may be mis-remembering.
- Final Justice (writer/producer/director; also played Bob, the sheriff who gets killed in the opening scene)
- Angels Revenge (writer/director); also had a brief cameo as a movie director supervising Terry's work.