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John Garman Hertzler Jr. is an American actor, author, screenwriter, and activist best known for his role on Star Trek: Deep Space Nine as the Klingon General Martok, whom he portrayed from 1995 until the series' end in 1999.
Birth Name
John Garman Hertzler
Born
Saturday, 18 March 1950
Actor Filmography
| Title | Character | Year |
|---|
| Space Command | Fleet Commander Ed Kemmer (Retired) | 2021 |
| Star Trek: Lower Decks | Drookmani Captain / Martok | 2020 |
| The 7th Rule | Self | 2019 |
| What We Left Behind: Star Trek DS9 | Himself / Self - Martok | 2018 |
| Prelude to Axanar | Admiral Samuel Travis / Captain Samuel Travis | 2014 |
| From the Mouths of Babes | Self | 2012 |
| Star Trek: Of Gods and Men | Koval | 2007 |
| InAlienable | Dr. Lattis | 2007 |
| Star Trek: Enterprise | Klingon Captain / Advocate Kolos | 2001 |
| All About Us | Mr. Miller | 2001 |
Actor Filmography
| Title | Character | Year |
|---|
| Space Command | Fleet Commander Ed Kemmer (Retired) | 2021 |
| Star Trek: Lower Decks | Drookmani Captain / Martok | 2020 |
| The 7th Rule | Self | 2019 |
| What We Left Behind: Star Trek DS9 | Himself / Self - Martok | 2018 |
| Prelude to Axanar | Admiral Samuel Travis / Captain Samuel Travis | 2014 |
| From the Mouths of Babes | Self | 2012 |
| Star Trek: Of Gods and Men | Koval | 2007 |
| InAlienable | Dr. Lattis | 2007 |
| Star Trek: Enterprise | Klingon Captain / Advocate Kolos | 2001 |
| All About Us | Mr. Miller | 2001 |
| Six Feet Under | Gallery Owner | 2001 |
| Roswell | Mr. Lafeber | 1999 |
| Pirates of Silicon Valley | Ridley Scott | 1999 |
| Charmed | Council Member | 1998 |
| The Prophecy II | Father William | 1998 |
| Sabrina the Teenage Witch | Plato | 1996 |
| Everybody Loves Raymond | Everett Munce | 1996 |
| Innocent Victims | Roy | 1996 |
| Star Trek: Voyager | Hirogen Hunter | 1995 |
| Touched by an Angel | Simon | 1994 |
| Fortune Hunter | Gen. Sergi Yodka | 1994 |
| Ultraman: The Ultimate Hero | Dr. Whitaker | 1993 |
| Diagnosis Murder | Mr. Smith | 1993 |
| Lois & Clark: The New Adventures of Superman | Trey | 1993 |
| The Adventures of Brisco County, Jr. | Edward Hayes / Myron Stempler | 1993 |
| Star Trek: Deep Space Nine | Martok / Vulcan Captain / Roy Ritterhouse / Laas | 1993 |
| Dr. Quinn, Medicine Woman | Capt. Burgoyne | 1993 |
| Highlander | Marcus Korolus | 1992 |
| Zorro | Alcalde Ignacio de Soto | 1990 |
| A Cry for Help: The Tracey Thurman Story | Doctor | 1989 |
| Seinfeld | Director | 1989 |
| Quantum Leap | Weathers Farrington | 1989 |
| Partners in Crime | Sgt. Cook | 1984 |
| And Justice for All | Driver | 1979 |
| The Redeemer: Son of Satan! | Davis | 1978 |
