A Captain's Log
2021 · TV Show
as Self
J.G. Hertzler
1949-03-18
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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. Beyond Deep Space Nine, he appeared in several other Star Trek shows, wrote two Star Trek novels, and frequently appeared at science fiction conventions. He grew up mostly around Washington, D.C., attended Bucknell University (earning a degree in political science), pursued a master's in set design at the University of Maryland, and even attended law school briefly. His early career included theater in Washington, New York, San Francisco, and Southern California, with roles spanning Shakespeare and other dramatic works, as well as some film appearances. Hertzler lives in the Finger Lakes region of New York, where he has lectured at Cornell University’s theater department and has been active in local politics and writing screenplays. His filmography includes notable appearances outside of Star Trek, such as Quantum Leap, Zorro, Highlander, and others.
Filmography
Star Trek: Lower Decks
2020 · TV Show
as Martok (voice), Drookmani Captain (voice)
The Circuit
2019 · Movie
What We Left Behind: Looking Back at Star Trek: Deep Space Nine
2018 · Movie
as Self
InAlienable
2008 · Movie
as Dr. Lattis
Star Trek: Of Gods and Men
2007 · Movie
as Koval
40 Years of Star Trek
2006 · Movie
as Self
Six Feet Under
2001 · TV Show
as Gallery Owner
Star Trek: Enterprise
2001 · TV Show
as Advocate Kolos, Klingon Captain
Pirates of Silicon Valley
1999 · Movie
as Ridley Scott
Roswell
1999 · TV Show
as Mr. Lafeber
The Prophecy II
1998 · Movie
as Father William
Charmed
1998 · TV Show
as Council Member
Everybody Loves Raymond
1996 · TV Show
as Everett Munce
Sabrina, the Teenage Witch
1996 · TV Show
as Plato
Star Trek: Deep Space Nine - The Way of the Warrior
1995 · Movie
as Martok
Star Trek: Voyager
1995 · TV Show
as Hirogen Hunter
Treasure Island: The Adventure Begins
1994 · Movie
as Black Dog
The Adventures of Brisco County, Jr.
1993 · TV Show
as Edward Hayes
Dr. Quinn, Medicine Woman
1993 · TV Show
as Capt. Burgoyne
Diagnosis: Murder
1993 · TV Show
as Mr. Smith
Star Trek: Deep Space Nine
1993 · TV Show
as Martok, Vulcan Captain, Martok / Roy Ritterhouse, Laas
Lois & Clark: The New Adventures of Superman
1993 · TV Show
as Trey
Highlander: The Series
1992 · TV Show
as Marcus Korolus
Zorro
1990 · TV Show
as Alcalde Ignacio de Soto
Seinfeld
1989 · TV Show
as Director
Quantum Leap
1989 · TV Show
as Weathers Farrington
...And Justice for All
1979 · Movie
as Driver
