Die Hard scenario Wiki
Xander Berkeley
DHS- Xander Berkeley
Name: Alexander "Xander" Harper Berkeley
Birthplace: Brooklyn, New York, USA
Birthdate: 16 December, 1955
Active: 1981–present
Films appeared in: Heat
The Rock
Air Force One
Universal Soldier: The Return
Seeking Justice
24: Solitary
Role: Ralph (Heat)
Lonner (The Rock)
Secret Service Agent Gibbs (Air Force One)
Dr. Dylan Cotner (Universal Soldier: The Return)
Bo Tyler (NetForce)
George Mason (24)
The Handler (24: Solitary)
Stuart (Taken)
Lt. Durgan (Seeking Justice)

Xander Berkeley (born December 16, 1955) is an American actor best known for his supporting roles in films such as Mommie Dearest, Sid and Nancy (with Gary Oldman), Terminator 2: Judgement Day (with Arnold Schwarzenegger and Robert Patrick), Candyman (with Tony Todd and Virginia Madsen), Apollo 13 (with Chris Ellis), Leaving Las Vegas (with Nicolas Cage and Julian Sands), Heat (with Kevin Gage, Danny Trejo and Mykelti Williamson), Gattaca (with Ethan Hawke), Shanghai Noon (with Jackie Chan),  Kick-Ass (again with Nic Cage), Faster (with Tom Berenger) and Transcendence (with Johnny Depp, Cole Hauser and Morgan Freeman).

He has also had recurring or starring roles on television shows such as "24", "CSI" (with Glenn Morshower), "Jericho", "The Booth at the End", "Nikita", the American version of "Being Human", "The Mentalist" and "Salem".

Xander appeared in the Die Hard scenario films The Rock (in an uncredited role as a scientist) and Air Force One (in a villainous role).