17. Michael Berryman
Michael Berryan was born in LA, and later became an actor. Unfortunately, he developed a syndrome known as Hypohidrotic Ectodermal Dysplasia that left him with no hair, sweet glands, finger nails and teeth. The syndrome made him one of the ugliest celebrities.
He appeared in several shows, including horror film in 1977, My Science Project (1985), Armed Response (1986), Weird Science (1985), and Evil Spirits (1990).