Caption: J.G. Hertzler at Star Trek Las Vegas
John Garman Hertzler is best-known for playing Chancellor Martok on Deep Space Nine. However, his "Star Trek" links go back to 1990, when he appeared in an episode of Quantum Leap opposite Scott Bakula, the man who became Jonathan Archer. He played four other characters in Deep Space Nine, Voyager, and Enterprise.
He also contributed voice acting to several Star Trek computer games.