Known for Acting

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.
1975
as Ellis
1978
as Mental Patient
1985
as Mutant Biker
1986
as Starfleet Display Officer
1989
as Sybok Warrior (uncredited)
1996
as Bus Patron with Oxygen Mask
2005
as Clevon
1977
as Pluto
2010
as Zombie Head
2013
as Virgil Magnus
1994
as Maniac Leader
1985
as Pluto
2010
as Mr. Harker
1992
as Matthew
1987
as Cpl. Catlett
2010
as Clayton Sparks
1984
as Chainsaw
1984
as Valet
1991
as Lisker
1987
as Dirtmaster