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Acting
December 16, 1955
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.

Self - (archive footage)
2025

Blackburn
2025

Harris
2025

Self
2024

Frank Lloyd Wright (voice)
2024

George Schultz
2024

Gilad Pellaeon (voice)
2024

Maynard
2024

Gordon
2023

Charlie Hoge
2023

as Self - (archive footage)

as Blackburn

as Harris

as Self

as Frank Lloyd Wright (voice)

as George Schultz

as Gilad Pellaeon (voice)

as Maynard

as Gordon

as Charlie Hoge

as Joel

as Oliver

as Michael Rand

as Self - Guest

as Priest

as Maurice Hewitt

as Lee Hackman

as Gilad Pellaeon

as Priest James

as Mario Castelnuovo-Tedesco

as Edwards

as Uncle

as Dr. Roberts

as Mr. Milk

as General John Acosta

as Judge Hollingsworth

as Artemis

as Phillip

as Peter Lockwood

as Mr. Ellis

as Ronnie 'Dogstick' Brannigan

as Forrest Bobo

as Jonathan Foster

as Dr. Kirk Langstrom (voice)

as Frank Devore

as Magistrat Hale

as Chick

as Dr. Thomas Casey

as Uncle Jeff

as Kenneth

as Dr. Lansen

as Manhunter / Paul Kirk (voice)

as Self

as Jeremiah Rains

as Peter Keller

as Peter

as Lieutenant Durgan

as The Man

as Moe

as Liam McClean

as Liam McLean

as Detective Carter

as Sergeant Mallory

as Gregory

as Percy Rose

as Warden Morgg / Trukk (voice)

as McMahon

as Detective Gigante

as Charles Monroe

as Harry

as Mr. Frost

as Captain Atom (voice)

as Father De La Chasse

as King

as Sonny

as Dad

as Sid Harris

as Fred O'Brien

as Sinestro (voice)

as Sheriff Thomas McAllister

as Stuart St. John

as Judge Moran

as Railroad Foreman
as Doc Ruppert

as John Smith (uncredited)

as John Smith (voice)

as Uncle Doug

as Peter Shepherd

as Det. Hyde

as Dr. Bancroft

as Detective Curt Landry

as Gus

as Harkness

as Arlen Pavich

as Mitchell Slocombe

as Jonathan

as Self

as A.D.A. Rex Swarthmore

as Paul (voice)


as Admiral Kentz

as Tommy Tulip

as Alvin Simmons

as Mento / General Immortus (voice)

as Warp (voice)

as Joey Patterson

as Harry Kellogg

as Keith Nolan

as General Brak / Soldier (voice)

as General Brak / Dignitary / Soldier (voice)

as Mr. DeMarco

as George Mason

as George Pagolis

as Virgil Koster

as Clay Shelton

as Dakar Johnston

as Rory Atwater

as Nathan Van Cleef

as Evan Wantz

as Franklin Hollis

as Dr. Dylan Cotner

as Bo Tyler

as Bo Tyler

as Dr. Childes (voice)

as Yepihodov

as Gavreau

as Lt. Clyde Webber

as Barking Deer #2 (voice)

as Stoat (voice)

as J.D. Johnson
as George

as Male Interviewer

as Hammond

as Charlie's Friend

as Additional Voices (voice)

as Dr. Lamar


as Agent Gibbs

as Danny “Figaretto” Evans

as Tosh

as Buzz Aldrin

as Date #4 (uncredited)

as John Barrows

as Sgt. Corey Mills (voice)

as Gentry

as Jimbo

as Ryan

as Lonner (uncredited)

as Alexander Willis

as Donald Falk

as Neil Wojak

as Sunburned Man

as Curtis Harrison

as Ralph

as Cynical Cabbie

as Christophe Nnngaarzh

as Henry Hurt

as Greg

as Terry McCammon

as Shakespeare

as Pro Shop Cashier (voice)

as Iago (Voice)

as Coldsteel (Voice)

as Second Man

as Detective Wilson

as Octopaganini (voice)

as Dr Carl Weschler

as Sherman Carson

as Hans (voice)

as Joey Szabo

as Russ Loring

as Dr. Hodge

as Brett Bones

as Bernard

as James Blakemore

as Capt. Whitaker

as Kozolowski

as Trevor Lyle

as Marchat

as Peter Zenner

as Harold

as Roberts, Vietnam

as Harvey Preston

as Todd Voight

as Wayne

as Bruce MacNamara

as Harry Copeland

as Blackwell

as Dr Landru

as Clay Pollack

as Lt. Pierson

as Stark

as Detective

as Fast Eddie

as John Patrick Earl

as Monty Griswold

as Jeffrey

as Rudy Mohr

as Lloyd

as Waingro

as Jack Torme

as Ricky Fell

as Cardogan

as Ez Andy

as Byron Cole

as Ray Spiotta

as Preacher McMahon

as Yo-Yo

as Bowery Snax

as (segment "Take My Life...Please!")

as Kent Sutcliffe

as Scalper

as Tommy Lowell

as Taxi Driver

as Baker

as Sergeant Wilson

as Dan Kowalski

as Eric Fromby

as Connally

as Maurice

as Buzz Whitehead


as Christopher Crawford

as Christopher Hawks

as Tom

as Marine

as Seymour