Late 1970s horror genre icon, renowned for his chilling portrayal of the character "Pluto" in the unflinching Wes Craven horror film, The Hills Have Eyes, released in 1977. Berryman, who is afflicted with Hypohidrotic Ectodermal Dysplasia, a rare and debilitating condition that leaves him without sweat glands, hair, fingernails, or teeth, bears a striking resemblance to the legendary Rondo Hatton, who also suffered from a unique medical condition that distorted his features, rendering him an ideal candidate for horror movie roles.
Notably, Berryman has successfully built upon his "Pluto" character and has appeared in a diverse range of sci-fi and fantasy films, including My Science Project, released in 1985, Weird Science, also released in 1985, Armed Response, released in 1986, and Evil Spirits, released in 1991. As a tall and lean actor, Berryman typically portrays mutant bikers, malevolent undertakers, monsters, and other terrifying characters, earning him a special place in the hearts of horror movie enthusiasts.