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.
Filmography
Cast Credits

Rust
Character: Blackburn
MOVIE • 2025

No Address
Character: Harris
MOVIE • 2025

Americans with No Address
Character: Self
MOVIE • 2024

Reagan
Character: George Schultz
MOVIE • 2024

Star Wars: Tales of the Empire
Character: Gilad Pellaeon (voice)
TV • 2024

The Ghost Trap
Character: Maynard
MOVIE • 2024

Heightened
Character: Gordon
MOVIE • 2023

Butcher's Crossing
Character: Charlie Hoge
MOVIE • 2023

The Audition
Character: Joel
MOVIE • 2022

Alchemy of the Spirit
Character: Oliver
MOVIE • 2022

The Wall of Mexico
Character: Michael Rand
MOVIE • 2020

Dead Talk Live
Character: Self - Guest
TV • 2020

The Dark and the Wicked
Character: Priest
MOVIE • 2020

FBI: Most Wanted
Character: Maurice Hewitt
TV • 2020

Truth Be Told
Character: Lee Hackman
TV • 2019

The Mandalorian
Character: Gilad Pellaeon
TV • 2019

Dark Harbor
Character: Priest James
MOVIE • 2019

The Maestro
Character: Mario Castelnuovo-Tedesco
MOVIE • 2018

City of Lies
Character: Edwards
MOVIE • 2018

Proud Mary
Character: Uncle
MOVIE • 2018
Crew