J.G. Hertzler
Acting
34
Acting Credits
Biography
John Garman Hertzler Jr. (born March 18, 1950, in Savannah, Georgia) is an American actor, author, screenwriter, and activist best known for his role as the Klingon General (later Chancellor) Martok on Star Trek: Deep Space Nine, a role he played from 1995 until the series ended in 1999. Hertzler began his acting career in the 1970s, primarily in stage acting and some films, eventually guest-starring in TV shows before landing a major role in the 1990s series Zorro as Alcalde Ignacio De Soto. B...
Known For
Filmography
Axanar: The Gathering Storm
2026
as Admiral Sam Travis
A Captain's Log
2021
as Self
Star Trek: Lower Decks
2020
as Martok (voice)
Star Trek: Lower Decks
2020
as Drookmani Captain (voice)
The Circuit
2019
What We Left Behind: Looking Back at Star Trek: Deep Space Nine
2018
as Self
Prelude to Axanar
2014
as Admiral Samuel Travis
InAlienable
2008
as Dr. Lattis
40 Years of Star Trek
2006
as Self
Six Feet Under
2001
as Gallery Owner
Star Trek: Enterprise
2001
as Advocate Kolos
Star Trek: Enterprise
2001
as Klingon Captain
Pirates of Silicon Valley
1999
as Ridley Scott
Roswell
1999
as Mr. Lafeber
The Prophecy II
1998
as Father William
Charmed
1998
as Council Member
Everybody Loves Raymond
1996
as Everett Munce
Sabrina, the Teenage Witch
1996
as Plato
Star Trek: Deep Space Nine - The Way of the Warrior
1995
as Martok
Star Trek: Voyager
1995
as Hirogen Hunter
Treasure Island: The Adventure Begins
1994
as Black Dog
The Adventures of Brisco County, Jr.
1993
as Edward Hayes
Dr. Quinn, Medicine Woman
1993
as Capt. Burgoyne
Diagnosis: Murder
1993
as Mr. Smith
Star Trek: Deep Space Nine
1993
as Martok
Star Trek: Deep Space Nine
1993
as Vulcan Captain
Star Trek: Deep Space Nine
1993
as Martok / Roy Ritterhouse
Star Trek: Deep Space Nine
1993
as Laas
Lois & Clark: The New Adventures of Superman
1993
as Trey
Highlander: The Series
1992
as Marcus Korolus
Zorro
1990
as Alcalde Ignacio de Soto
Seinfeld
1989
as Director
Quantum Leap
1989
as Weathers Farrington
...And Justice for All
1979
as Driver