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

The Mentalist

Law & Order

Criminal Minds

CSI: Crime Scene Investigation

Bones

The Walking Dead

24

Law & Order: Criminal Intent

All Movies (141)

• Recluse2026
• Oddities2026
• Rust2025 · as Blackburn
• No Address2025 · as Harris
• Americans with No Address2024 · as Self
• Schindler Space Architect2024 · as Frank Lloyd Wright (voice)
• Reagan2024 · as George Schultz
• The Ghost Trap2024 · as Maynard
• Heightened2023 · as Gordon
• Butcher's Crossing2023 · as Charlie Hoge
• The Audition2022 · as Joel
• Alchemy of the Spirit2022 · as Oliver
• The Wall of Mexico2020 · as Michael Rand
• The Dark and the Wicked2020 · as Priest
• Dark Harbor2019 · as Priest James
• The Maestro2018 · as Mario Castelnuovo-Tedesco
• City of Lies2018 · as Edwards
• Proud Mary2018 · as Uncle
• Shot2017 · as Dr. Roberts
• Born Guilty2017 · as Mr. Milk
• Moments of Clarity2016 · as Artemis
• Allegiant2016 · as Phillip
• Solace2015 · as Mr. Ellis
• The Gift2015 · as Forrest Bobo
• Son of Batman2014 · as Dr. Kirk Langstrom (voice)
• This Last Lonely Place2014 · as Frank Devore
• Small Time2014 · as Chick
• Transcendence2014 · as Dr. Thomas Casey
• ETXR2014 · as Gordon Shafer
• Pony2014 · as Uncle Jeff
• Live at the Foxes Den2013 · as Kenneth
• Louder Than Words2013 · as Dr. Lansen
• That Guy... Who Was in That Thing2012 · as Self
• Tales of Everyday Magic2012 · as Peter Keller
• Five2011 · as Peter
• Seeking Justice2011 · as Lieutenant Durgan
• Girl Walks Into a Bar2011 · as Moe
• Luster2010 · as Detective Carter
• Faster2010 · as Sergeant Mallory
• Below the Beltway2010 · as McMahon
• Kick-Ass2010 · as Detective Gigante
• Bedrooms2010 · as Harry
• Women in Trouble2009 · as Mr. Frost
• Superman/Batman: Public Enemies2009 · as Captain Atom (voice)
• Repo Chick2009 · as Father De La Chasse
• Year One2009 · as King
• Cook County2009 · as Sonny
• The Toe Tactic2009 · as Dad
• Sparks2009 · as Sid Harris
• Inside the Box2009 · as Fred O'Brien
• Taken2008 · as Stuart St. John
• Fracture2007 · as Judge Moran
• Seraphim Falls2007 · as Railroad Foreman
• The Garage2006 · as Doc Ruppert
• Out There2006 · as Uncle Doug
• Magma: Volcanic Disaster2006 · as Peter Shepherd
• Deepwater2005 · as Gus
• Drop Dead Sexy2005 · as Harkness
• North Country2005 · as Arlen Pavich
• Standing Still2005 · as Jonathan
• The Last Full Measure2004
• In Enemy Hands2004 · as Admiral Kentz
• The Third Date2003 · as Tommy Tulip
• Quicksand2003 · as Joey Patterson
• Storytelling2001 · as Mr. DeMarco
• The Man from Elysian Fields2001 · as Virgil Koster
• China: The Panda Adventure2001 · as Dakar Johnston
• Shanghai Noon2000 · as Nathan Van Cleef
• Timecode2000 · as Evan Wantz
• Universal Soldier: The Return1999 · as Dr. Dylan Cotner
• NetForce1999 · as Bo Tyler
• The Cherry Orchard1999 · as Yepihodov
• Winchell1998 · as Gavreau
• Phoenix1998 · as Lt. Clyde Webber
• Driven1998 · as J.D. Johnson
• The Truth About Juliet1998 · as George
• Breast Men1997 · as Male Interviewer
• Amistad1997 · as Hammond
• One Night Stand1997 · as Charlie's Friend
• Air Force One1997 · as Agent Gibbs
• Gattaca1997 · as Dr. Lamar
• The Killing Jar1997 · as Danny “Figaretto” Evans
• Persons Unknown1996 · as Tosh
• Apollo 11: First Steps on the Moon1996 · as Buzz Aldrin
• For Hope1996 · as Date #4 (uncredited)
• If These Walls Could Talk1996 · as John Barrows
• Bulletproof1996 · as Gentry
• Within the Rock1996 · as Ryan
• The Rock1996 · as Lonner (uncredited)
• Barb Wire1996 · as Alexander Willis
• Poison Ivy 2: Lily1996 · as Donald Falk
• A Family Thing1996 · as Sunburned Man
• A Kidnapping in the Family1996 · as Curtis Harrison
• Heat1995 · as Ralph
• Leaving Las Vegas1995 · as Cynical Cabbie
• Apollo 131995 · as Henry Hurt
• Safe1995 · as Greg
• The Fifteen Minute Hamlet1995 · as Shakespeare
• Attack of the 50 Ft. Woman1994 · as Second Man
• Roswell1994 · as Sherman Carson
• Caroline at Midnight1994 · as Joey Szabo
• Donato and Daughter1993 · as Russ Loring
• It's Nothing Personal1993 · as James Blakemore
• A Few Good Men1992 · as Capt. Whitaker
• Deadly Matrimony1992
• Candyman1992 · as Trevor Lyle
• The Gun in Betty Lou's Handbag1992 · as Marchat
• A Private Matter1992 · as Peter Zenner
• The Keys1992 · as Harold
• For the Boys1991 · as Roberts, Vietnam
• Billy Bathgate1991 · as Harvey Preston
• Terminator 2: Judgment Day1991 · as Todd Voight
• Murder in High Places1991 · as Wayne
• Not of This World1991 · as Bruce MacNamara
• Dillinger1991 · as Harry Copeland
• The Rookie1990 · as Blackwell
• The Grifters1990 · as Lt. Pierson
• Short Time1990 · as Stark
• The Guardian1990 · as Detective
• The Last of the Finest1990 · as Fast Eddie
• The Assassin1990 · as John Patrick Earl
• The Gumshoe Kid1990 · as Monty Griswold
• Internal Affairs1990 · as Rudy Mohr
• The Fabulous Baker Boys1989 · as Lloyd
• L.A. Takedown1989 · as Waingro
• Deadly Dreams1988 · as Jack Torme
• Tapeheads1988 · as Ricky Fell
• The Verne Miller Story1988 · as Cardogan
• The Lawless Land1988 · as Ez Andy
• Walker1987 · as Byron Cole
• Straight to Hell1987 · as Preacher McMahon
• Omega Syndrome1986 · as Yo-Yo
• Sid and Nancy1986 · as Bowery Snax
• Volunteers1985 · as Kent Sutcliffe
• Tag: The Assassination Game1982 · as Connally
• Fire on the Mountain1981
• Mommie Dearest1981 · as Christopher Crawford
• Paradise: Disturbed—
• Relapse— · as Seymour
• Saving Black Bear—
• Path Lights— · as Father

All TV Shows (82)

• Star Wars: Tales of the Empire2024 · as Gilad Pellaeon (voice)
• Dead Talk Live2020 · as Self - Guest
• FBI: Most Wanted2020 · as Maurice Hewitt
• Truth Be Told2019 · as Lee Hackman
• The Mandalorian2019 · as Gilad Pellaeon
• MacGyver2016 · as General John Acosta
• Bull2016 · as Judge Hollingsworth
• Supergirl2015 · as Peter Lockwood
• Zoo2015 · as Ronnie 'Dogstick' Brannigan
• 12 Monkeys2015 · as Jonathan Foster
• Salem2014 · as Magistrat Hale
• Beware the Batman2013 · as Manhunter / Paul Kirk (voice)
• Longmire2012 · as Jeremiah Rains
• The Booth at the End2011 · as The Man
• Being Human2011 · as Liam McClean
• Being Human2011 · as Liam McLean
• The Walking Dead2010 · as Gregory
• Nikita2010 · as Percy Rose
• Ben 10: Ultimate Alien2010 · as Warden Morgg / Trukk (voice)
• Justified2010 · as Charles Monroe
• Batman: The Brave and the Bold2008 · as Sinestro (voice)
• The Mentalist2008 · as Sheriff Thomas McAllister
• Jericho2006 · as John Smith (uncredited)
• Jericho2006 · as John Smith (voice)
• Criminal Minds2005 · as Det. Hyde
• Bones2005 · as Dr. Bancroft
• The Closer2005 · as Detective Curt Landry
• Medium2005 · as Mitchell Slocombe
• 100 Scariest Movie Moments2004 · as Self
• Boston Legal2004 · as A.D.A. Rex Swarthmore
• The Batman2004 · as Paul (voice)
• Karen Sisco2003 · as Alvin Simmons
• Teen Titans2003 · as Mento / General Immortus (voice)
• Teen Titans2003 · as Warp (voice)
• The Twilight Zone2002 · as Harry Kellogg
• The Court2002 · as Keith Nolan
• Justice League2001 · as General Brak / Dignitary / Soldier (voice)
• Justice League2001 · as General Brak / Soldier (voice)
• 242001 · as George Mason
• Law & Order: Criminal Intent2001 · as George Pagolis
• Going to California2001 · as Clay Shelton
• CSI: Crime Scene Investigation2000 · as Rory Atwater
• The West Wing1999 · as Franklin Hollis
• Netforce1999 · as Bo Tyler
• Batman Beyond1999 · as Dr. Childes (voice)
• The Wild Thornberrys1998 · as Barking Deer #2 (voice)
• The Wild Thornberrys1998 · as Stoat (voice)
• The Legend of Calamity Jane1997 · as Additional Voices (voice)
• Extreme Ghostbusters1997
• Superman: The Animated Series1996 · as Sgt. Corey Mills (voice)
• Women: Stories of Passion1996 · as Jimbo
• Nash Bridges1996 · as Neil Wojak
• Partners1995 · as Christophe Nnngaarzh
• The Outer Limits1995 · as Terry McCammon
• Life with Louie1994 · as Pro Shop Cashier (voice)
• Gargoyles1994 · as Iago (Voice)
• Gargoyles1994 · as Coldsteel (Voice)
• ER1994 · as Detective Wilson
• The Tick1994 · as Octopaganini (voice)
• New York Undercover1994 · as Dr Carl Weschler
• Duckman1994 · as Hans (voice)
• The X-Files1993 · as Dr. Hodge
• The Adventures of Brisco County, Jr.1993 · as Brett Bones
• Good Advice1993 · as Bernard
• Super Force1990 · as Dr. Landru
• Law & Order1990 · as Clay Pollack
• Grand1990 · as Jeffrey
• Wiseguy1987 · as Ray Spiotta
• The Twilight Zone1985 · as (segment "Take My Life...Please!")
• Moonlighting1985 · as Scalper
• Miami Vice1984 · as Tommy Lowell
• Riptide1984 · as Taxi Driver
• The A-Team1983 · as Baker
• The A-Team1983 · as Sergeant Wilson
• Remington Steele1982 · as Dan Kowalski
• Tales of the Gold Monkey1982 · as Eric Fromby
• Cagney & Lacey1982 · as Maurice
• Falcon Crest1981 · as Buzz Whitehead
• Hart to Hart1979 · as Christopher Hawks
• The Incredible Hulk1977 · as Tom
• M*A*S*H1972 · as Marine
• Day One—