Worf

Worf (wo'rIv in the Klingon language) is a fictional character in the TV series Star Trek: The Next Generation (1987–94) and in seasons four through seven of the series Star Trek: Deep Space Nine (1995–99). He also appears in the four Next Generation feature films that were released between 1994 and 2002. 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. He is played by the actor Michael Dorn.