Michael Berryman(I)

Was born with "Hypohidrotic Ectodermal Dysplasia", which prevents the formation of hair, fingernails, teeth and sweat glands. The condition is rare, inherited and incurable. Despite his lack of sweat glands, he worked on The Hills Have Eyes (1977) in the desert for five months in heat of 100 degrees and more.

[on being bullied as a child] I was pretty well grounded. I was being teased and whatever and I didn't have anger skills, so I would go to the parents and say your children are brats and tell them they were bad parents.