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.
One Flew Over the Cuckoo's Nest
1975
Weird Science
1985
Star Trek IV: The Voyage Home
1986
Spy Hard
1996
Star Trek V: The Final Frontier
1989
The Devil's Rejects
2005
Scooby-Doo! Curse of the Lake Monster
2010
My Science Project
1985
Voyage of the Rock Aliens
1984
Double Dragon
1994
The Hills Have Eyes
1977
Horror Able
2024
The Guyver
1991
Solar Crisis
1992
Beastmaster 2: Through the Portal of Time
1991
The Barbarians
1987
The Hills Have Eyes Part 2
1985
The Lords of Salem
2013
Gator King
1997
Deadly Blessing
1981
Mojave Moon
1996
The Independent
2000
The Gambler: The Legend Continues
1987
Evil Spirits
1991
The Fifth Floor
1978
Cut and Run
1985
Outrage: Born in Terror
2009
Penny Dreadful
2006
Little Sister
1992
Underground Entertainment: The Movie
2011
Death House
2018
Mask Maker
2011
Armed Response
1986
Invitation to Hell
1984
Auntie Lee's Meat Pies
1992
Fallen Angels
2007
Brother's War
2009
Two Heads Are Better Than None
2000
Smothered
2016