
Michael John Berryman (born September 4, 1948) is an American character actor. Berryman was born with hypohidrotic ectodermal dysplasia, a rare condition characterized by the absence of sweat glands, hair, and fingernails; his unusual physical appearance has allowed Berryman to make a career out of portraying characters in a number of cult films, horror films and B movies. He first came to prominence for his roles in Miloš Forman's One Flew Over the Cuckoo's Nest (1975) and Wes Craven's The Hills Have Eyes (1977). He has appeared in a wide range of feature films and television series, including Star Trek, The X-Files, and Highway to Heaven, in which he portrayed Satan.

The X-Files
TV • 1993

Star Trek: The Next Generation
TV • 1987

ALF
TV • 1986

ALF
TV • 1986

Z Nation
TV • 2014

Highway to Heaven
TV • 1984

Tales from the Crypt
TV • 1989

Kenan & Kel
TV • 1996

Creature Features
TV • 2016

Die schlechtesten Filme aller Zeiten
TV • 2013

One Flew Over the Cuckoo's Nest
MOVIE • 1975

Weird Science
MOVIE • 1985

The Highwayman
TV • 1987

Star Trek IV: The Voyage Home
MOVIE • 1986

Spy Hard
MOVIE • 1996

Oceano
TV • 1989

Star Trek V: The Final Frontier
MOVIE • 1989

We Are Angels
TV • 1997