
J.G. Hertzler
Born 1949-03-18
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.
Movies and TV shows

Seinfeld
1989

Charmed
1998

Star Trek: Voyager
1995

Quantum Leap
1989

Diagnosis: Murder
1993

Star Trek: Deep Space Nine
1993

Star Trek: Enterprise
2001

Six Feet Under
2001

Sabrina, the Teenage Witch
1996

Everybody Loves Raymond
1996

Lois & Clark: The New Adventures of Superman
1993

Dr. Quinn, Medicine Woman
1993

Highlander: The Series
1992

Star Trek: Lower Decks
2020

Roswell
1999

The Adventures of Brisco County, Jr.
1993

Zorro
1990

A Captain's Log
2021

...And Justice for All
1979

Pirates of Silicon Valley
1999

The Prophecy II
1998

InAlienable
2008

Treasure Island: The Adventure Begins
1994

What We Left Behind: Looking Back at Star Trek: Deep Space Nine
2018

Star Trek: Of Gods and Men
2007

40 Years of Star Trek
2006

The Circuit
2019

Star Trek: Deep Space Nine - The Way of the Warrior
1995