Actor who started out his career in "One flew over the cuckoos Nest" (1975) as a mental patient and went on to become a horror icon in the movie "The Hills have Eyes" (1977).

He suffers from Hypohidrotic Ectodermal Dysplasia which is a rare disease that means he has no hair, no finger nails, no sweat glands and no teeth. This gives him the frightening appearence that people know him for. But he is apparently one of the nicest people you could ever meet.
Michael Berryman was so cool in The Hills have Eyes, he really made the movie.
by DannyHatesTesco November 28, 2005
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