William Margold, a prominent figure in the adult film industry, is best known for his work in the cult classic "Fantasm" (1976), which has become a sought-after title for collectors of adult cinema. Margold not only made waves as an actor but also contributed to the industry as a director and advocate for performer rights, serving as a director for the Free Speech Coalition and co-founding the X-Rated Critics Organization. His dedication to the craft and the welfare of performers led to the establishment of the PAW Foundation, highlighting his commitment to the industry beyond the screen. Collectors prize Margold's films not just for their entertainment value but also for their historical significance in the evolution of adult cinema. His appearances in documentaries, such as "After Porn Ends" (2012), further cement his legacy, providing insight into the adult film world and its impact on culture. With a career spanning decades, Margold's contributions continue to resonate, making his works essential for any serious collector of physical media.