Robert Hammond Patrick is an American actor best known for portraying intense antagonists and authority figures. He broke out in 1991 with his iconic performance as the T-1000 in James Cameron’s Terminator 2: Judgment Day, where his cold, physical presence turned the character into one of cinema’s most enduring villains. Following Terminator 2, Patrick became a fixture across film and television, with notable roles in Fire in the Sky (1993), Last Action Hero (1993), The Faculty (1998), Walk the Line (2005), and Bridge to Terabithia (2007), as well as The X-Files (2000–2002), where he portrayed FBI Special Agent John Doggett. He later led the military drama The Unit (2006–2009) as Colonel Tom Ryan, the commanding officer overseeing an elite covert operations team, grounding the series with a disciplined, authoritative presence rooted in military realism. He also appeared in Scorpion (2014–2018), where he played Cabe Gallo, the former federal agent who recruits and oversees the show’s team of geniuses. Patrick also appeared in Peacemaker in 2022, a DC Comics–based series created by James Gunn, portraying Auggie Smith, a radical, authoritarian figure tied to Peacemaker’s past and ideology, a role that highlighted a darker and more unsettling side of his screen persona. Outside of acting, Patrick is a longtime supporter of the U.S. military and the USO, a commitment shaped by his family history. The grandson of an Army veteran who served in World Wars I and II and the Korean War, he has participated in multiple USO tours since 2008, traveling to seven countries and regularly visiting military hospitals. He is also a dedicated Harley-Davidson enthusiast and co-owner of Harley-Davidson of Santa Clarita, and lives in Los Angeles with his wife, Barbara, and their two children.
Walk the Line
(Ray Cash)
Terminator 2: Judgment Day
(T-1000)
Bridge to Terabithia
(Jack Aarons)
Die Hard 2
(O'Reilly)
Cop Land
(Jack Rucker)
Spy Kids
(Mr. Lisp)
The Men Who Stare at Goats
(Todd Nixon)
Double Dragon
(Kongo Shuko)
Flags of Our Fathers
(Colonel Chandler Johnson)
Ladder 49
(Lenny Richter)
All the Pretty Horses
(Cole)
Decoy
(Travis)
From Dusk Till Dawn 2: Texas Blood Money
(Buck)
Wayne's World
(Bad Cop / T-1000)
The Marine
(Rome)
Charlie's Angels: Full Throttle
(Ray Carter)
The Faculty
(Coach Joe Willis)
Balls of Fury
(Sgt. Pete Daytona)
Firewall
(Gary Mitchell)
Striptease
(Darrell Grant)
Texas Rangers
(Sgt. John Armstrong)
Fly Me to the Moon
(Louie (voice))
Strange Wilderness
(Gus Hayden)
Tactical Assault
(Colonel Lee Banning)
Good Day for It
(Luke Cain)
Fire in the Sky
(Mike Rodgers)
Renegade Force
(Jake McInroy)
The Wrath of Cain
(Warden Dean)
Alien Trespass
(Vernon)
Autopsy
(Dr. David Benway)
Red Faction: Origins
(Alec)
Body Language
(Delbert Radley)
Kill Speed
Supercross
(Earl Cole)
Pavement
(Sam Brown)
A Texas Funeral
(Zach)
Five Minarets in New York
(Becker)
Bad Apple
(Colonel Tom Ryanmy 'Bells' Bellavita)
Gangster Squad
(Max Kennard)
S.W.A.T.: Firefight
(Walter Hatch)
Future Hunters
(Slade)
Jayne Mansfield's Car
(Jimbo Caldwell)
Safe House
(Daniel Kiefe)
Backflash
(Ray Bennett)
Lovelace
(John J. Boreman)
Trouble with the Curve
(Vince)
Identity Thief
(Skiptracer)
Eye of the Eagle
(Johnny Ransom)
Ambushed
(Shannon Herrold)
Zero Tolerance
(Jeff Douglas)
Street Level
(Giuseppe)
The Black Waters of Echo's Pond
(Pete)
Hong Kong 97
(Reginald Cameron)
The Making of 'The Marine'
(Self)
Dark Asset
(Dr. Cain)
Asylum
(Nicholas Tordone)
Hollywood Adventures
(Studio Guard #1)
Starz Inside - Unforgettably Evil
(Self)
Warlords from Hell
Endless Love
(Harry Elliot)
Last Gasp
(Leslie Chase)
Shelter in Solitude
(Dwayne)
The Road Within
(Robert)
Perfect Assassins
(Leo Benita)
Kill the Messenger
(Ronny Quail)
The Only Thrill
(Colonel Tom Ryan McHenry)
Body Shot
(Mickey Dane)
Equalizer 2000
(Deke)
Mexico City
(Ambassador Mills)
Ask Me Anything
(Doug Kampenfelt)
The Cool Surface
(Jarvis Scott)
Holbrook/Twain: An American Odyssey
(Self)
Angels Don't Sleep Here
(Det. Russell Stark)
The Vivero Letter
(James Wheeler)
Lost After Dark
(Mr. C.)
Tell
(Ashton)
Killer Instinct
(Johnny Ransom)
First to Die
(Nicholas Jenks)
Hellions
(Corman)
Troubled Waters
(Sterling French)
Sinatra 100: An All-Star Grammy Concert
(Self - Presenter)
Ticker
(FBI Agent)
Sink Or Swim
(Goatee)
D-Minus
(Chris)
Hollywood Boulevard II
(Cameraman)
Last Rampage
(Gary Tison)
Hounds of War
(Colonel Hart)
Mafia
(Detective Jules Dupree)
We Are Marshall
(Rick Tolley (uncredited))
D-Tox
(Noah)
Eloise
(Doctor H.H. Greiss)
Rag and Bone
(Sgt. Daniel Ryan)
Back Roads
(Chief Mansour)
Rosewood
(Lover)
Last Action Hero
(T-1000)
Tone-Deaf
(Harvey)
The Poison Rose
(Chief Walsh)
Edge of Fear
(Jack Pryor)
T2: Reprogramming The Terminator
(Self)
The Laundromat
(Captain Paris)
SGT. Will Gardner
(Tony)
Honest Thief
(Samuel Baker)
The Rising Hawk
(Zakhar Berkut)
21 Days Under the Sky
(Narrator)
Jarhead: Law of Return
(Senator Jackson)
From Star Wars to Star Wars: The Story of Industrial Light & Magic
(Self)
Lonely Street
(Mr. Aaron)
What Josiah Saw
(Josiah Graham)
The Making of 'Terminator 2 3D'
(Self)
The Protégé
(Billy Boy)
The Making of 'Terminator 2: Judgment Day'
(Self)
No Man of God
(Roger Depue)
Rushed
(Jim O'Brien)
T2: More Than Meets the Eye
(Self)
Edgar Floats
(Nicholas Breakey)
A Place Among the Dead
(RP)
Good Men
(Self)
Masters of Illusion: The Wizards of Special Effects
(Self)
Chuck Zito: An American Story
(Self)
Hot Bath an' a Stiff Drink 2
(Dallas Cambridge)
Mermaid
(Ron Bocca)
FEEL
(Sitter 13)
The Broken Movie
(cop)
From Dusk Till Dawn: Making the First Season
Diamond
Shogun Cop
(Detective)
The John Cena Experience
(Self (archive footage))
T2 3-D: Battle Across Time
(T1000)
Batman Beyond
(Richard Armacost (voice))
Avatar: The Last Airbender
(Master Piandao (voice))
Chuck
(Col. James Keller)
American Dad!
(Mindhunter (voice))
The Real Adventures of Jonny Quest
(Race Bannon (voice))
The Batman
(Hawkman (voice))
The Unit
(Tom Ryan)
Tales from the Crypt
(Lothar)
Law & Order: Special Victims Unit
(Ray Schenkel)
MacGyver
(Ian Cain)
The Angry Beavers
Superman: The Animated Series
(LeBeau (voice))
Lost
(Hibbs)
Ben 10
(Phil (voice))
The Walking Dead
(Mays / Mays' Brother)
The New Lassie
Disorderly Conduct: Video on Patrol
The Outer Limits
(Major John Skokes)
The Night Agent
(Hawkins)
Last Resort
(Master Chief Joseph Prosser)
Hell's Kitchen
(Self - Restaurant Patron)
Stargate Atlantis
(Colonel Marshall Sumner)
From Dusk Till Dawn: The Series
(Jacob Fuller)
Scorpion
(Cabe Gallo)
Community
(Waldron)
Elvis
(Vernon Presley)
Psych
(Major General Felts)
True Blood
(Jackson Herveaux)
Goliath
(Coach (Billy's Father))
Burn Notice
(John Barrett)
The Sopranos
(David Scatino)
The Hire
(FBI Agent)
Sons of Anarchy
(Les Packer)
Halloween Wars
(Self - Guest Judge)
The Legend of Calamity Jane
(John Wesley Hardin (voice))
Lore
(Reverend Eliakim Phelps)
Reacher
(Shane Langston)
Royal Crackers
(Agent Gubbins (voice))
NCIS
(Merton Bell)
Mayans M.C.
(Les Packer)
1923
(Sheriff McDowell)
Perry Mason
(Herman Baggerly)
The X-Files
(John Doggett)
Peacemaker
(August 'Auggie' Smith / White Dragon)
Talking Sopranos
(Self)
LIGHT & MAGIC
(Self - Actor (archive footage))
The Walking Dead
(Mays 1 (Archive Footage) (uncredited))
Big Love
(Bud Maybury)
Krapopolis
(Fatherinlawus (voice))
Peacemaker
(August 'Auggie' Smith / Blue Dragon)
Ride with Norman Reedus
(Self)
Tulsa King
(Jeremiah Dunmire)