Mitchell Craig "Mitch" Pileggi (born April 5, 1952) is an American actor. Pileggi is known for playing FBI assistant director Walter Skinner on the long-running popular series The X-Files. He also had a recurring role on Stargate Atlantis as Col. Steven Caldwell. He appeared in the 2008 film, Flash of Genius.
Known for Grey's Anatomy 2005 Supernatural 2005 Transformers: The Last Knight 2017 American Horror Story 2011 ★ 5.5 American Traitor: The Trial of Axis Sally 2021
John Kelly Series ★ 7.1 Walker 2021
Bonham Walker Series ★ 6.7 Helstrom 2020
Papa ★ 6 Polaroid 2019
Sheriff Thomas Pembroke Series ★ 8.5 The Rookie 2018
Rex ★ 6.1 Transformers: The Last Knight 2017
TRF Group Leader ★ 4.9 The Girl in the Photographs 2015
Sheriff Porter Series ★ 7.3 Supergirl 2015
Rama Khan Series ★ 6.9 Dallas 2012
Harris Ryland Series ★ 7.1 The Finder 2012
Eddie Ross ★ 5.3 Mega Cyclone 2011
Gunter MacGregor Series ★ 8.1 American Horror Story 2011
Art Series ★ 7.3 Human Target 2010
Leonard Kreese Series ★ 8 Castle 2009
Hans Brauer ★ 5.9 The X-Files: I Want to Believe 2008
Walter Skinner ★ 6.8 Recount 2008
Bill Daley ★ 6.6 Flash of Genius 2008
Macklin Tyler Series ★ 8.4 Sons of Anarchy 2008
Ernest Darby Series ★ 7.5 Breaking the Magician's Code: Magic's Biggest Secrets Finally Revealed 2008
Narrator (voice) Series ★ 7 In Plain Sight 2008
Al Dennison Series ★ 7.6 Leverage 2008
Colin Saunders ★ 6.5 Man in the Chair 2007
Floyd Series ★ 7.1 Reaper 2007
Detective Dan Stafford Series ★ 7.1 Brothers and Sisters 2006
Browne Carter Series ★ 7.4 Day Break 2006
Detective Spivak Series ★ 7.5 Medium 2005
Dan Burroughs Series ★ 8.3 Supernatural 2005
Samuel Campbell Series ★ 8.2 Grey's Anatomy 2005
Lawrence Jennings Series ★ 8 The Batman 2004
Commissioner Gordon (voice) Series ★ 7.9 Boston Legal 2004
U.S. Attorney Mark Freestone Series ★ 8 Stargate Atlantis 2004
Steven Caldwell Series ★ 7.4 Tarzan 2003
Richard Clayton Series ★ 7.2 Nip/Tuck 2003
Dr. Russell Marcus Series ★ 7.6 NCIS 2003
Wynn Crawford Series ★ 6.2 Birds of Prey 2002
Al Hawke ★ 4.6 Conspiracy Theory: Did We Land on the Moon? 2001
Narrator Series ★ 6.8 The Lone Gunmen 2001
Walter Skinner ★ 5.2 Gun Shy 2000
Dexter Helvenshaw Series ★ 7.6 CSI: Crime Scene Investigation 2000
Happy Harry Desmond Series ★ 8.2 Batman Beyond 1999
Dr. Stanton (voice) Series ★ 8 Law & Order: Special Victims Unit 1999
Jack Hammond Series ★ 8.3 The West Wing 1999
Senator Dresden ★ 6.9 The X-Files 1998
Walter Skinner ★ 4.1 Legion of Fire: Killer Ants 1998
Police Chief Jeff Croy Series ★ 7.9 That '70s Show 1998
Bull ★ 5.1 Vampire in Brooklyn 1995
Tony the Hitman Series ★ 7.8 ER 1994
Terry Waters Series ★ 8.4 The X-Files 1993
Walter Skinner ★ 6.9 Basic Instinct 1992
Internal Affairs Investigator ★ 5.6 Knight Rider 2000 1991
Thomas J. Watts Series ★ 7.3 Get a Life 1990
Max ★ 5.6 Shocker 1989
Horace Pinker Series ★ 7 Alien Nation 1989
John Paul Sartre ★ 6.4 Return of the Living Dead Part II 1988
Sarge ★ 6.8 Three O'Clock High 1987
Duke Herman ★ 5.7 Death Wish 4: The Crackdown 1987
Lab Foreman Series ★ 7.5 The A-Team 1983
Paul Winkle Series ★ 5.5 Falcon Crest 1981
Saunder's Henchman Series ★ 6.9 Dallas 1978
Morrisey 
