Brett Azar

Brett Azar is a bodybuilder-turned-stuntman and actor. He was the stand-in for Arnold Schwarzenegger's original T-800 and the younger version of Pops seen in the flashback, both portrayed in Terminator Genisys. He later again acted as a stand-in for younger Carl in Terminator: Dark Fate. Azar has guest-starred in acting roles for shows such as The Jim Gaffigan Show and Jessica Jones as well as appeared in movies such as Jersey Shore Massacre, Price for Freedom, Staten Island Summer and Central Intelligence.
Cast

Johnny & Clyde
Honey

Staten Island Summer
Badass Guy (uncredited)

Agent Toby Barks
Horace the Horrible

Jersey Shore Massacre
Gino

Terminator Genisys
Guardian - Young / Terminator T-800

Central Intelligence
Agent Wally (uncredited)

Black Wake
Sargeant Rodriguez

Detective Chinatown 2
Wild Bull Billy

The Exit Room
Counting Guard

Dead Sound
Chester

Night Sweats
Motorcycle Man

Terminator: Dark Fate
T-800 (uncredited)

Most Beautiful Island
Johnny

SARS-29
William Connor