<Tr> <Th> Years active </Th> <Td> 1978--present </Td> </Tr> <Tr> <Th> Children </Th> <Td> </Td> </Tr> <P> John Garman "J.G." Hertzler Jr. (born March 18, 1950) is an American actor, author, screenwriter, and activist best known for his role on Star Trek: Deep Space Nine as the Klingon General (and later Chancellor) Martok, whom he portrayed from 1995 until the series' end in 1999 . </P> <P> Hertzler began his acting career in the 1970s, doing mostly stage acting and appearing in some films . He guest starred in a few episodes for different television shows before landing the part of Alcalde Ignacio De Soto in the early 1990s show Zorro . In addition to Deep Space Nine, Hertzler has appeared on several other Star Trek shows, written two Star Trek novels, and has made appearances at Star Trek and science fiction conventions . Hertzler lives in the Finger Lakes region of New York where he was a lecturer at Cornell's theater department, and has been active in the area's regional politics, as well as writing a screenplay . </P>

Who played general martok on deep space nine