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Xander Berkeley
ACTOR

Xander Berkeley

Known for The Walking Dead · Terminator 2: Judgment Day · The Mandalorian

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…

Snapshot 2026-10-15

Born
Dec 16, 1955
Birthplace
Brooklyn, New York City, New York, USA
Known For
Acting

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.

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Known For

TVThe Walking Dead
The Walking DeadGregory · 2010
★ 8.1
MOVIETerminator 2: Judgment Day
Terminator 2: Judgment DayTodd Voight · 1991
★ 8.2
TVThe Mandalorian
The MandalorianGilad Pellaeon · 2019
★ 8.4
MOVIEHeat
HeatRalph · 1995
★ 7.9
TVThe Mentalist
The MentalistSheriff Thomas McAllister · 2008
★ 8.4
TVSupergirl
SupergirlPeter Lockwood · 2015
★ 7.3
TVCriminal Minds
Criminal MindsDet. Hyde · 2005
★ 8.3
TVThe X-Files
The X-FilesDr. Hodge · 1993
★ 8.4

Filmography

Movies

Fire on the Mountain
1981
Mommie DearestChristopher Crawford
1981
Tag: The Assassination GameConnally
1982
VolunteersKent Sutcliffe
1985
Omega SyndromeYo-Yo
1986
Sid and NancyBowery Snax
1986
Straight to HellPreacher McMahon
1987
WalkerByron Cole
1987
Deadly DreamsJack Torme
1988
TapeheadsRicky Fell
1988
The Lawless LandEz Andy
1988
The Verne Miller StoryCardogan
1988
L.A. TakedownWaingro
1989
The Fabulous Baker BoysLloyd
1989
Internal AffairsRudy Mohr
1990
Short TimeStark
1990
The AssassinJohn Patrick Earl
1990
The GriftersLt. Pierson
1990
The GuardianDetective
1990
The Gumshoe KidMonty Griswold
1990
The Last of the FinestFast Eddie
1990
The RookieBlackwell
1990
Billy BathgateHarvey Preston
1991
DillingerHarry Copeland
1991
For the BoysRoberts, Vietnam
1991
Murder in High PlacesWayne
1991
Not of This WorldBruce MacNamara
1991
Terminator 2: Judgment DayTodd Voight
1991
A Few Good MenCapt. Whitaker
1992
A Private MatterPeter Zenner
1992
CandymanTrevor Lyle
1992
Deadly MatrimonyKozolowski
1992
The Gun in Betty Lou's HandbagMarchat
1992
The KeysHarold
1992
Donato and DaughterRuss Loring
1993
It's Nothing PersonalJames Blakemore
1993
Attack of the 50 Ft. WomanSecond Man
1994
Caroline at MidnightJoey Szabo
1994
RoswellSherman Carson
1994
Apollo 13Henry Hurt
1995
HeatRalph
1995
Leaving Las VegasCynical Cabbie
1995
SafeGreg
1995
The Fifteen Minute HamletShakespeare
1995
A Family ThingSunburned Man
1996
A Kidnapping in the FamilyCurtis Harrison
1996
Apollo 11: First Steps on the MoonBuzz Aldrin
1996
Barb WireAlexander Willis
1996
BulletproofGentry
1996
For HopeDate #4 (uncredited)
1996
If These Walls Could TalkJohn Barrows
1996
Persons UnknownTosh
1996
Poison Ivy 2: LilyDonald Falk
1996
The RockLonner (uncredited)
1996
Within the RockRyan
1996
Air Force OneAgent Gibbs
1997
AmistadHammond
1997
Breast MenMale Interviewer (voice)
1997
GattacaDr. Lamar
1997
One Night StandCharlie's Friend
1997
The Killing JarDanny “Figaretto” Evans
1997
DrivenJ.D. Johnson
1998
PhoenixLt. Clyde Webber
1998
TT
The Truth About JulietGeorge
1998
WinchellGavreau
1998
NetForceBo Tyler
1999
The Cherry OrchardYepihodov
1999
Universal Soldier: The ReturnDr. Dylan Cotner
1999
Shanghai NoonNathan Van Cleef
2000
TimecodeEvan Wantz
2000
China: The Panda AdventureDakar Johnston
2001
StorytellingMr. DeMarco
2001
The Man from Elysian FieldsVirgil Koster
2001
QuicksandJoey Patterson
2003
The Third DateTommy Tulip
2003
In Enemy HandsAdmiral Kentz
2004
The Last Full Measure
2004
DeepwaterGus
2005
Drop Dead SexyHarkness
2005
North CountryArlen Pavich
2005
Standing StillJonathan
2005
Magma: Volcanic DisasterPeter Shepherd
2006
Out ThereUncle Doug
2006
TG
The GarageDoc Ruppert
2006
FractureJudge Moran
2007
Seraphim FallsRailroad Foreman
2007
TakenStuart St. John
2008
Cook CountySonny
2009
Cook CountyProducer
2009
Inside the BoxFred O'Brien
2009
Repo ChickFather De La Chasse
2009
SparksSid Harris
2009
Superman/Batman: Public EnemiesCaptain Atom (voice)
2009
The Toe TacticDad
2009
Women in TroubleMr. Frost
2009
Year OneKing
2009
BedroomsHarry
2010
Below the BeltwayMcMahon
2010
FasterSergeant Mallory
2010
Kick-AssDetective Gigante
2010
LusterDetective Carter
2010
FivePeter
2011
Girl Walks Into a BarMoe
2011
InsideH1ghway_man
2011
Seeking JusticeLieutenant Durgan
2011
Tales of Everyday MagicPeter Keller
2012
That Guy... Who Was in That ThingSelf
2012
Live at the Foxes DenKenneth
2013
Louder Than WordsDr. Lansen
2013
ETXRGordon Shafer
2014
PonyUncle Jeff
2014
Red John
2014
Small TimeChick
2014
Son of BatmanDr. Kirk Langstrom (voice)
2014
This Last Lonely PlaceFrank Devore
2014
TranscendenceDr. Thomas Casey
2014
SolaceMr. Ellis
2015
The GiftForrest Bobo
2015
AllegiantPhillip
2016
Moments of ClarityArtemis
2016
Born GuiltyMr. Milk
2017
ShotDr. Roberts
2017
City of LiesEdwards
2018
Proud MaryUncle
2018
The MaestroMario Castelnuovo-Tedesco
2018
Dark HarborPriest James
2019
The Dark and the WickedPriest
2020
The Wall of MexicoMichael Rand
2020
Alchemy of the SpiritOliver
2022
The AuditionJoel
2022
Butcher's CrossingCharlie Hoge
2023
HeightenedGordon
2023
Americans with No AddressSelf
2024
ReaganGeorge Schultz
2024
RustBlackburn
2024
Schindler Space ArchitectFrank Lloyd Wright (voice)
2024
The Ghost TrapMaynard
2024
No AddressHarris
2025
Oddities
2026
Recluse
2026
Saving Black BearSkip
2026
AG
A Great Depression
PD
Paradise: Disturbed
PL
Path LightsFather
RelapseSeymour

Television

M*A*S*HMarine · 1 eps
1972
The Incredible HulkTom · 1 eps
1977
Hart to HartChristopher Hawks · 1 eps
1979
Falcon CrestBuzz Whitehead · 1 eps
1981
Cagney & LaceyMaurice · 1 eps
1982
Remington SteeleDan Kowalski · 1 eps
1982
Tales of the Gold MonkeyEric Fromby · 1 eps
1982
The A-TeamBaker · 1 eps
1983
The A-TeamSergeant Wilson · 1 eps
1983
Miami ViceTommy Lowell · 2 eps
1984
RiptideTaxi Driver · 1 eps
1984
MoonlightingScalper · 1 eps
1985
The Twilight Zone(segment "Take My Life...Please!") · 1 eps
1985
WiseguyRay Spiotta · 1 eps
1987
GrandJeffrey · 1 eps
1990
Law & OrderClay Pollack · 1 eps
1990
Super ForceDr. Landru · 3 eps
1990
Good AdviceBernard · 1 eps
1993
The Adventures of Brisco County, Jr.Brett Bones · 1 eps
1993
The X-FilesDr. Hodge · 1 eps
1993
DuckmanHans (voice) · 1 eps
1994
ERDetective Wilson · 1 eps
1994
GargoylesIago (Voice) · 1 eps
1994
GargoylesColdsteel (Voice) · 1 eps
1994
New York UndercoverDr Carl Weschler · 1 eps
1994
The TickOctopaganini (voice) · 1 eps
1994
Life with LouiePro Shop Cashier (voice) · 1 eps
1995
PartnersChristophe Nnngaarzh · 1 eps
1995
The Outer LimitsTerry McCammon · 1 eps
1995
Nash BridgesNeil Wojak · 1 eps
1996
Superman: The Animated SeriesSgt. Corey Mills (voice) · 1 eps
1996
Women: Stories of PassionJimbo · 1 eps
1996
Extreme Ghostbusters1 eps
1997
The Legend of Calamity JaneAdditional Voices (voice) · 1 eps
1997
The Wild ThornberrysBarking Deer #2 (voice) · 1 eps
1998
The Wild ThornberrysStoat (voice) · 1 eps
1998
Batman BeyondDr. Childes (voice) · 2 eps
1999
NetforceBo Tyler · 2 eps
1999
The West WingFranklin Hollis · 1 eps
1999
CSI: Crime Scene InvestigationRory Atwater · 5 eps
2000
24George Mason · 27 eps
2001
Going to CaliforniaClay Shelton · 1 eps
2001
Justice LeagueGeneral Brak / Dignitary / Soldier (voice) · 1 eps
2001
Justice LeagueGeneral Brak / Soldier (voice) · 1 eps
2001
Law & Order: Criminal IntentGeorge Pagolis · 1 eps
2001
The CourtKeith Nolan · 3 eps
2002
The Twilight ZoneHarry Kellogg · 1 eps
2002
Karen SiscoAlvin Simmons · 1 eps
2003
Teen TitansMento / General Immortus (voice) · 2 eps
2003
Teen TitansWarp (voice) · 1 eps
2003
100 Scariest Movie MomentsSelf · 5 eps
2004
Boston LegalA.D.A. Rex Swarthmore · 1 eps
2004
The BatmanPaul (voice) · 1 eps
2004
BonesDr. Bancroft · 1 eps
2005
Criminal MindsDet. Hyde · 1 eps
2005
MediumMitchell Slocombe · 1 eps
2005
The CloserDetective Curt Landry · 1 eps
2005
JerichoJohn Smith (uncredited) · 1 eps
2006
JerichoJohn Smith (voice) · 1 eps
2006
Batman: The Brave and the BoldSinestro (voice) · 1 eps
2008
The MentalistSheriff Thomas McAllister · 5 eps
2008
Ben 10: Ultimate AlienWarden Morgg / Trukk (voice) · 1 eps
2010
JustifiedCharles Monroe · 2 eps
2010
NikitaPercy Rose · 45 eps
2010
The Walking DeadGregory · 15 eps
2010
Being HumanLiam McClean · 5 eps
2011
Being HumanLiam McLean · 3 eps
2011
NTSF:SD:SUV::Theodore Dent · 1 eps
2011
The Booth at the EndThe Man · 10 eps
2011
LongmireJeremiah Rains · 2 eps
2012
Beware the BatmanManhunter / Paul Kirk (voice) · 1 eps
2013
SalemMagistrat Hale · 13 eps
2014
12 MonkeysJonathan Foster · 3 eps
2015
SupergirlPeter Lockwood · 1 eps
2015
ZooRonnie 'Dogstick' Brannigan · 4 eps
2015
BullJudge Hollingsworth · 1 eps
2016
MacGyverGeneral John Acosta · 1 eps
2016
The MandalorianGilad Pellaeon · 1 eps
2019
Truth Be ToldLee Hackman · 7 eps
2019
Dead Talk LiveSelf - Guest · 2 eps
2020
FBI: Most WantedMaurice Hewitt · 1 eps
2020
Star Wars: Tales of the EmpireGilad Pellaeon (voice) · 1 eps
2024
DO
Day One1 eps

Photos

Xander Berkeley photo
Xander Berkeley photo
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