Xander Berkeley
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
Law & Order
The Mentalist
Criminal Minds
CSI: Crime Scene Investigation
Bones
The Walking Dead
24
The Mandalorian
Law & Order: Criminal Intent
Medium
The X-Files
ER
The West Wing
The Closer
Falcon Crest
M*A*S*H
Miami Vice
Supergirl
Boston Legal
The A-Team
FBI: Most Wanted
Bull
MacGyver
Justified
The Twilight Zone
Nash Bridges
Longmire
Hart to Hart
Salem
Cagney & Lacey