Worf character jug produced in Indonesia for Applause of Woodland Hills, California, in 1994. Worf, son of Mogh, is a fictional character in the Star Trek franchise, portrayed by actor Michael Dorn. He appears in the television series "Star Trek: The Next Generation", "Star Trek: Deep Space Nine", and the third and final season of "Star Trek: Picard", as well four Star Trek feature films. Worf is the first Klingon main character to appear in Star Trek and has appeared in more Star Trek franchise episodes than any other character. Handed down for ten generations in his family, Worf's bat'leth, the traditional "sword of honor" preferred by Klingon warriors adept at the martial arts.