Greydon Clark
- Compleanno:
- 02/07/1943
- Luogo di nascita:
- Niles, Michigan, United States:
 | Hollywood Dreams & Nightmares: The Robert Englund Story (2022) Self |
 | The Making of Final Justice (2021) Self |
 | Survival of the Film Freaks (2018) Himself |
 | 42nd Street Memories: The Rise and Fall of America's Most Notorious Street (2015) Himself |
 | Electric Boogaloo: The Wild, Untold Story of Cannon Films (2014) Self - Filmmaker |
 | Olhar Estrangeiro (2006) Self |
 | Stargames (1998) Adam |
 | Dance Macabre (1992) Anderson |
 | Uninvited (1988) Lab Doctor |
 | Final Justice (1984) Sheriff |
 | Wacko (1982) Lawnmower Killer |
 | Black Shampoo (1976) Wilson's Man on Phone (voice) |
 | Psychic Killer (1975) Police Sgt. Marv Sowash |
 | Tom (1973) Jim |
 | Dracula vs. Frankenstein (1971) Strange |
 | Hell's Bloody Devils (1970) Anderson |
 | The Mighty Gorga (1969) Dan Remington |
 | Satan's Sadists (1969) Acid |