Person

Xander Berkeley

Acting · Born 1955-12-16 · Brooklyn, New York City, New York, USA

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.

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  Law & Order

  Clay Pollack

• 

  The Mentalist

  Sheriff Thomas McAllister

• 

  Criminal Minds

  Det. Hyde

• 

  Bones

  Dr. Bancroft

• 

  CSI: Crime Scene Investigation

  Rory Atwater

• 

  The Walking Dead

  Gregory

• 

  The X-Files

  Dr. Hodge

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  24

  George Mason

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  Supergirl

  Peter Lockwood

• 

  Law & Order: Criminal Intent

  George Pagolis

• 2026Recluse
• 2026Oddities
• 2025No AddressHarris
• 2024RustBlackburn
• 2024Americans with No AddressSelf
• 2024Schindler Space ArchitectFrank Lloyd Wright (voice)
• 2024ReaganGeorge Schultz
• 2024Star Wars: Tales of the EmpireGilad Pellaeon (voice)
• 2024The Ghost TrapMaynard
• 2023HeightenedGordon
• 2023Butcher's CrossingCharlie Hoge
• 2022The AuditionJoel
• 2022Alchemy of the SpiritOliver
• 2020The Wall of MexicoMichael Rand
• 2020Dead Talk LiveSelf - Guest
• 2020The Dark and the WickedPriest
• 2020FBI: Most WantedMaurice Hewitt
• 2019Truth Be ToldLee Hackman
• 2019The MandalorianGilad Pellaeon
• 2019Dark HarborPriest James
• 2018The MaestroMario Castelnuovo-Tedesco
• 2018City of LiesEdwards
• 2018Proud MaryUncle
• 2017ShotDr. Roberts
• 2017Born GuiltyMr. Milk
• 2016MacGyverGeneral John Acosta
• 2016BullJudge Hollingsworth
• 2016Moments of ClarityArtemis
• 2016AllegiantPhillip
• 2015SupergirlPeter Lockwood
• 2015SolaceMr. Ellis
• 2015ZooRonnie 'Dogstick' Brannigan
• 2015The GiftForrest Bobo
• 201512 MonkeysJonathan Foster
• 2014Son of BatmanDr. Kirk Langstrom (voice)
• 2014This Last Lonely PlaceFrank Devore
• 2014SalemMagistrat Hale
• 2014Small TimeChick
• 2014TranscendenceDr. Thomas Casey
• 2014ETXRGordon Shafer
• 2014PonyUncle Jeff
• 2013Live at the Foxes DenKenneth
• 2013Louder Than WordsDr. Lansen
• 2013Beware the BatmanManhunter / Paul Kirk (voice)
• 2012That Guy... Who Was in That ThingSelf
• 2012LongmireJeremiah Rains
• 2012Tales of Everyday MagicPeter Keller
• 2011FivePeter
• 2011Seeking JusticeLieutenant Durgan
• 2011The Booth at the EndThe Man
• 2011Girl Walks Into a BarMoe
• 2011Being HumanLiam McClean
• 2010LusterDetective Carter
• 2010FasterSergeant Mallory
• 2010The Walking DeadGregory
• 2010NikitaPercy Rose
• 2010Below the BeltwayMcMahon
• 2010Ben 10: Ultimate AlienWarden Morgg / Trukk (voice)
• 2010Kick-AssDetective Gigante
• 2010JustifiedCharles Monroe
• 2010BedroomsHarry
• 2009Women in TroubleMr. Frost
• 2009Superman/Batman: Public EnemiesCaptain Atom (voice)
• 2009Repo ChickFather De La Chasse
• 2009Year OneKing
• 2009Cook CountySonny
• 2009The Toe TacticDad
• 2009SparksSid Harris
• 2009Inside the BoxFred O'Brien
• 2008Batman: The Brave and the BoldSinestro (voice)
• 2008The MentalistSheriff Thomas McAllister
• 2008TakenStuart St. John
• 2007FractureJudge Moran
• 2007Seraphim FallsRailroad Foreman
• 2006The GarageDoc Ruppert
• 2006JerichoJohn Smith (uncredited)
• 2006Out ThereUncle Doug
• 2006Magma: Volcanic DisasterPeter Shepherd
• 2005Criminal MindsDet. Hyde
• 2005BonesDr. Bancroft
• 2005The CloserDetective Curt Landry
• 2005DeepwaterGus
• 2005Drop Dead SexyHarkness
• 2005North CountryArlen Pavich
• 2005MediumMitchell Slocombe
• 2005Standing StillJonathan
• 2004100 Scariest Movie MomentsSelf
• 2004Boston LegalA.D.A. Rex Swarthmore
• 2004The BatmanPaul (voice)
• 2004The Last Full Measure
• 2004In Enemy HandsAdmiral Kentz
• 2003The Third DateTommy Tulip
• 2003Karen SiscoAlvin Simmons
• 2003Teen TitansMento / General Immortus (voice)
• 2003QuicksandJoey Patterson
• 2002The Twilight ZoneHarry Kellogg
• 2002The CourtKeith Nolan
• 2001StorytellingMr. DeMarco
• 2001Justice LeagueGeneral Brak / Dignitary / Soldier (voice)
• 200124George Mason
• 2001Law & Order: Criminal IntentGeorge Pagolis
• 2001The Man from Elysian FieldsVirgil Koster
• 2001Going to CaliforniaClay Shelton
• 2001China: The Panda AdventureDakar Johnston
• 2000CSI: Crime Scene InvestigationRory Atwater
• 2000Shanghai NoonNathan Van Cleef
• 2000TimecodeEvan Wantz
• 1999The West WingFranklin Hollis
• 1999Universal Soldier: The ReturnDr. Dylan Cotner
• 1999NetForceBo Tyler
• 1999NetforceBo Tyler
• 1999Batman BeyondDr. Childes (voice)
• 1999The Cherry OrchardYepihodov
• 1998WinchellGavreau
• 1998PhoenixLt. Clyde Webber
• 1998The Wild ThornberrysBarking Deer #2 (voice)
• 1998DrivenJ.D. Johnson
• 1998The Truth About JulietGeorge
• 1997Breast MenMale Interviewer
• 1997AmistadHammond
• 1997One Night StandCharlie's Friend
• 1997The Legend of Calamity JaneAdditional Voices (voice)
• 1997Extreme Ghostbusters
• 1997Air Force OneAgent Gibbs
• 1997GattacaDr. Lamar
• 1997The Killing JarDanny “Figaretto” Evans
• 1996Persons UnknownTosh
• 1996Apollo 11: First Steps on the MoonBuzz Aldrin
• 1996For HopeDate #4 (uncredited)
• 1996If These Walls Could TalkJohn Barrows
• 1996BulletproofGentry
• 1996Superman: The Animated SeriesSgt. Corey Mills (voice)
• 1996Women: Stories of PassionJimbo
• 1996Within the RockRyan
• 1996The RockLonner (uncredited)
• 1996Barb WireAlexander Willis
• 1996Poison Ivy 2: LilyDonald Falk
• 1996A Family ThingSunburned Man
• 1996Nash BridgesNeil Wojak
• 1996A Kidnapping in the FamilyCurtis Harrison
• 1995HeatRalph
• 1995Leaving Las VegasCynical Cabbie
• 1995PartnersChristophe Nnngaarzh
• 1995Apollo 13Henry Hurt
• 1995SafeGreg
• 1995The Outer LimitsTerry McCammon
• 1995The Fifteen Minute HamletShakespeare
• 1994Life with LouiePro Shop Cashier (voice)
• 1994GargoylesIago (Voice)
• 1994Attack of the 50 Ft. WomanSecond Man
• 1994ERDetective Wilson
• 1994The TickOctopaganini (voice)
• 1994New York UndercoverDr Carl Weschler
• 1994RoswellSherman Carson
• 1994DuckmanHans (voice)
• 1994Caroline at MidnightJoey Szabo
• 1993Donato and DaughterRuss Loring
• 1993The X-FilesDr. Hodge
• 1993The Adventures of Brisco County, Jr.Brett Bones
• 1993Good AdviceBernard
• 1993It's Nothing PersonalJames Blakemore
• 1992A Few Good MenCapt. Whitaker
• 1992Deadly Matrimony
• 1992CandymanTrevor Lyle
• 1992The Gun in Betty Lou's HandbagMarchat
• 1992A Private MatterPeter Zenner
• 1992The KeysHarold
• 1991For the BoysRoberts, Vietnam
• 1991Billy BathgateHarvey Preston
• 1991Terminator 2: Judgment DayTodd Voight
• 1991Murder in High PlacesWayne
• 1991Not of This WorldBruce MacNamara
• 1991DillingerHarry Copeland
• 1990The RookieBlackwell
• 1990Super ForceDr. Landru
• 1990Law & OrderClay Pollack
• 1990The GriftersLt. Pierson
• 1990Short TimeStark
• 1990The GuardianDetective
• 1990The Last of the FinestFast Eddie
• 1990The AssassinJohn Patrick Earl
• 1990The Gumshoe KidMonty Griswold
• 1990GrandJeffrey
• 1990Internal AffairsRudy Mohr
• 1989The Fabulous Baker BoysLloyd
• 1989L.A. TakedownWaingro
• 1988Deadly DreamsJack Torme
• 1988TapeheadsRicky Fell
• 1988The Verne Miller StoryCardogan
• 1988The Lawless LandEz Andy
• 1987WalkerByron Cole
• 1987WiseguyRay Spiotta
• 1987Straight to HellPreacher McMahon
• 1986Omega SyndromeYo-Yo
• 1986Sid and NancyBowery Snax
• 1985The Twilight Zone(segment "Take My Life...Please!")
• 1985VolunteersKent Sutcliffe
• 1985MoonlightingScalper
• 1984Miami ViceTommy Lowell
• 1984RiptideTaxi Driver
• 1983The A-TeamBaker
• 1982Remington SteeleDan Kowalski
• 1982Tales of the Gold MonkeyEric Fromby
• 1982Tag: The Assassination GameConnally
• 1982Cagney & LaceyMaurice
• 1981Falcon CrestBuzz Whitehead
• 1981Fire on the Mountain
• 1981Mommie DearestChristopher Crawford
• 1979Hart to HartChristopher Hawks
• 1977The Incredible HulkTom
• 1972M*A*S*HMarine
• —Paradise: Disturbed
• —RelapseSeymour
• —Saving Black Bear
• —Path LightsFather
• —Day One