Xander Berkeley
Biography
Alexander Harper Berkeley (born December 16, 1955) is an American actor. He is known for his television roles as Sheriff Thomas McAllister on the crime drama The Mentalist, George Mason on the political thriller series 24, Percy Rose on the action thriller series Nikita, the Man on The Booth At The End and Gregory in AMC's The Walking Dead. His notable film roles include Todd Voight in Terminator 2: Judgment Day, Agent Gibbs in Air Force One, Bowery Snax in Sid and Nancy, Dr. Lamar in Gattaca, Trevor Lyle in Candyman and Ralph in Heat.
Known For
TV
Bones
Dr. Bancroft
2005
TV
The Mentalist
Sheriff Thomas McAllister
2008
TV
Law & Order
Clay Pollack
1990
TV
CSI: Crime Scene Investigation
Rory Atwater
2000
TV
Criminal Minds
Det. Hyde
2005
TV
Boston Legal
A.D.A. Rex Swarthmore
2004
TV
The X-Files
Dr. Hodge
1993
TV
24
George Mason
2001
TV
The Walking Dead
Gregory
2010
TV
Law & Order: Criminal Intent
George Pagolis
2001
TV
The West Wing
Franklin Hollis
1999
TV
ER
Detective Wilson
1994
TV
Medium
Mitchell Slocombe
2005
TV
Supergirl
Peter Lockwood
2015
TV
The Closer
Detective Curt Landry
2005
TV
M*A*S*H
Marine
1972
TV
Miami Vice
Tommy Lowell
1984
TV
The Mandalorian
Gilad Pellaeon
2019
TV
Falcon Crest
Buzz Whitehead
1981
TV
The A-Team
Baker
1983
Filmography
2025FilmLegacy of Screams: The Evolution of Horror Moviesas Self - (archive footage)2025FilmRustas Blackburn2025FilmNo Addressas Harris2024FilmAmericans with No Addressas Self2024FilmSchindler Space Architectas Frank Lloyd Wright (voice)2024FilmReaganas George Schultz2024TVStar Wars: Tales of the Empireas Gilad Pellaeon (voice)2024FilmThe Ghost Trapas Maynard2023FilmHeightenedas Gordon2023FilmButcher's Crossingas Charlie Hoge2022FilmThe Auditionas Joel2022FilmAlchemy of the Spiritas Oliver2020FilmThe Wall of Mexicoas Michael Rand2020TVDead Talk Liveas Self - Guest2020FilmThe Dark and the Wickedas Priest2020TVFBI: Most Wantedas Maurice Hewitt2019TVTruth Be Toldas Lee Hackman2019TVThe Mandalorianas Gilad Pellaeon2019FilmDark Harboras Priest James2018FilmThe Maestroas Mario Castelnuovo-Tedesco2018FilmCity of Liesas Edwards2018FilmProud Maryas Uncle2017FilmShotas Dr. Roberts2017FilmBorn Guiltyas Mr. Milk2016TVMacGyveras General John Acosta2016TVBullas Judge Hollingsworth2016FilmMoments of Clarityas Artemis2016FilmAllegiantas Phillip2015TVSupergirlas Peter Lockwood2015FilmSolaceas Mr. Ellis2015TVZooas Ronnie 'Dogstick' Brannigan2015FilmThe Giftas Forrest Bobo2015TV12 Monkeysas Jonathan Foster2014FilmSon of Batmanas Dr. Kirk Langstrom (voice)2014FilmThis Last Lonely Placeas Frank Devore2014TVSalemas Magistrat Hale2014FilmSmall Timeas Chick2014FilmTranscendenceas Dr. Thomas Casey2014FilmETXRas Gordon Shafer2014FilmPonyas Uncle Jeff2013FilmLive at the Foxes Denas Kenneth2013FilmLouder Than Wordsas Dr. Lansen2013TVBeware the Batmanas Manhunter / Paul Kirk (voice)2012FilmThat Guy... Who Was in That Thingas Self2012TVLongmireas Jeremiah Rains2012FilmTales of Everyday Magicas Peter Keller2011FilmFiveas Peter2011FilmSeeking Justiceas Lieutenant Durgan2011TVThe Booth at the Endas The Man2011FilmGirl Walks Into a Baras Moe2011TVBeing Humanas Liam McClean2010FilmLusteras Detective Carter2010FilmFasteras Sergeant Mallory2010TVThe Walking Deadas Gregory2010TVNikitaas Percy Rose2010FilmBelow the Beltwayas McMahon2010TVBen 10: Ultimate Alienas Warden Morgg / Trukk (voice)2010FilmKick-Assas Detective Gigante2010TVJustifiedas Charles Monroe2010FilmBedroomsas Harry2009FilmWomen in Troubleas Mr. Frost2009FilmSuperman/Batman: Public Enemiesas Captain Atom (voice)2009FilmRepo Chickas Father De La Chasse2009FilmYear Oneas King2009FilmCook Countyas Sonny2009FilmThe Toe Tacticas Dad2009FilmSparksas Sid Harris2009FilmInside the Boxas Fred O'Brien2008TVBatman: The Brave and the Boldas Sinestro (voice)2008TVThe Mentalistas Sheriff Thomas McAllister2008FilmTakenas Stuart St. John2007FilmFractureas Judge Moran2007FilmSeraphim Fallsas Railroad Foreman2006FilmThe Garageas Doc Ruppert2006TVJerichoas John Smith (uncredited)2006FilmOut Thereas Uncle Doug2006FilmMagma: Volcanic Disasteras Peter Shepherd2005TVCriminal Mindsas Det. Hyde2005TVBonesas Dr. Bancroft2005TVThe Closeras Detective Curt Landry2005FilmDeepwateras Gus2005FilmDrop Dead Sexyas Harkness2005FilmNorth Countryas Arlen Pavich2005TVMediumas Mitchell Slocombe2005FilmStanding Stillas Jonathan2004TV100 Scariest Movie Momentsas Self2004TVBoston Legalas A.D.A. Rex Swarthmore2004TVThe Batmanas Paul (voice)2004FilmThe Last Full Measure2004FilmIn Enemy Handsas Admiral Kentz2003FilmThe Third Dateas Tommy Tulip2003TVKaren Siscoas Alvin Simmons2003TVTeen Titansas Mento / General Immortus (voice)2003FilmQuicksandas Joey Patterson2002TVThe Twilight Zoneas Harry Kellogg2002TVThe Courtas Keith Nolan2001FilmStorytellingas Mr. DeMarco2001TVJustice Leagueas General Brak / Soldier (voice)2001TV24as George Mason2001TVLaw & Order: Criminal Intentas George Pagolis2001FilmThe Man from Elysian Fieldsas Virgil Koster2001TVGoing to Californiaas Clay Shelton2001FilmChina: The Panda Adventureas Dakar Johnston2000TVCSI: Crime Scene Investigationas Rory Atwater2000FilmShanghai Noonas Nathan Van Cleef2000FilmTimecodeas Evan Wantz1999TVThe West Wingas Franklin Hollis1999FilmUniversal Soldier: The Returnas Dr. Dylan Cotner1999FilmNetForceas Bo Tyler1999TVNetforceas Bo Tyler1999TVBatman Beyondas Dr. Childes (voice)1999FilmThe Cherry Orchardas Yepihodov1998FilmWinchellas Gavreau1998FilmPhoenixas Lt. Clyde Webber1998TVThe Wild Thornberrysas Barking Deer #2 (voice)1998FilmDrivenas J.D. Johnson1998FilmThe Truth About Julietas George1997FilmBreast Menas Male Interviewer1997FilmAmistadas Hammond1997FilmOne Night Standas Charlie's Friend1997TVThe Legend of Calamity Janeas Additional Voices (voice)1997TVExtreme Ghostbusters1997FilmAir Force Oneas Agent Gibbs1997FilmGattacaas Dr. Lamar1997FilmThe Killing Jaras Danny “Figaretto” Evans1996FilmPersons Unknownas Tosh1996FilmApollo 11: First Steps on the Moonas Buzz Aldrin1996FilmFor Hopeas Date #4 (uncredited)1996FilmIf These Walls Could Talkas John Barrows1996FilmBulletproofas Gentry1996TVSuperman: The Animated Seriesas Sgt. Corey Mills (voice)1996TVWomen: Stories of Passionas Jimbo1996FilmWithin the Rockas Ryan1996FilmThe Rockas Lonner (uncredited)1996FilmBarb Wireas Alexander Willis1996FilmPoison Ivy 2: Lilyas Donald Falk1996FilmA Family Thingas Sunburned Man1996TVNash Bridgesas Neil Wojak1996FilmA Kidnapping in the Familyas Curtis Harrison1995FilmHeatas Ralph1995FilmLeaving Las Vegasas Cynical Cabbie1995TVPartnersas Christophe Nnngaarzh1995FilmApollo 13as Henry Hurt1995FilmSafeas Greg1995TVThe Outer Limitsas Terry McCammon1995FilmThe Fifteen Minute Hamletas Shakespeare1994TVLife with Louieas Pro Shop Cashier (voice)1994TVGargoylesas Iago (Voice)1994FilmAttack of the 50 Ft. Womanas Second Man1994TVERas Detective Wilson1994TVThe Tickas Octopaganini (voice)1994TVNew York Undercoveras Dr Carl Weschler1994FilmRoswellas Sherman Carson1994TVDuckmanas Hans (voice)1994FilmCaroline at Midnightas Joey Szabo1993FilmDonato and Daughteras Russ Loring1993TVThe X-Filesas Dr. Hodge1993TVThe Adventures of Brisco County, Jr.as Brett Bones1993TVGood Adviceas Bernard1993FilmIt's Nothing Personalas James Blakemore1992FilmA Few Good Menas Capt. Whitaker1992FilmDeadly Matrimony1992FilmCandymanas Trevor Lyle1992FilmThe Gun in Betty Lou's Handbagas Marchat1992FilmA Private Matteras Peter Zenner1992FilmThe Keysas Harold1991FilmFor the Boysas Roberts, Vietnam1991FilmBilly Bathgateas Harvey Preston1991FilmTerminator 2: Judgment Dayas Todd Voight1991FilmMurder in High Placesas Wayne1991FilmNot of This Worldas Bruce MacNamara1991FilmDillingeras Harry Copeland1990FilmThe Rookieas Blackwell1990TVSuper Forceas Dr. Landru1990TVLaw & Orderas Clay Pollack1990FilmThe Griftersas Lt. Pierson1990FilmShort Timeas Stark1990FilmThe Guardianas Detective1990FilmThe Last of the Finestas Fast Eddie1990FilmThe Assassinas John Patrick Earl1990FilmThe Gumshoe Kidas Monty Griswold1990TVGrandas Jeffrey1990FilmInternal Affairsas Rudy Mohr1989FilmThe Fabulous Baker Boysas Lloyd1989FilmL.A. Takedownas Waingro1988FilmDeadly Dreamsas Jack Torme1988FilmTapeheadsas Ricky Fell1988FilmThe Verne Miller Storyas Cardogan1988FilmThe Lawless Landas Ez Andy1987FilmWalkeras Byron Cole1987TVWiseguyas Ray Spiotta1987FilmStraight to Hellas Preacher McMahon1986FilmOmega Syndromeas Yo-Yo1986FilmSid and Nancyas Bowery Snax1985TVThe Twilight Zoneas (segment "Take My Life...Please!")1985FilmVolunteersas Kent Sutcliffe1985TVMoonlightingas Scalper1984TVMiami Viceas Tommy Lowell1984TVRiptideas Taxi Driver1983TVThe A-Teamas Baker1982TVRemington Steeleas Dan Kowalski1982TVTales of the Gold Monkeyas Eric Fromby1982FilmTag: The Assassination Gameas Connally1982TVCagney & Laceyas Maurice1981TVFalcon Crestas Buzz Whitehead1981FilmFire on the Mountain1981FilmMommie Dearestas Christopher Crawford1979TVHart to Hartas Christopher Hawks1977TVThe Incredible Hulkas Tom1972TVM*A*S*Has Marine—FilmOddities—FilmRecluse—FilmParadise: Disturbed—FilmRelapseas Seymour—TVDay One