Worf, son of Mogh (wo'rIv mogh puqloD in the Klingon language) is a fictional character in the Star Trek franchise. He appears in the television series Star Trek: The Next Generation (TNG) and seasons four through seven of Star Trek: Deep Space Nine (DS9) as well as the feature films Star Trek Generations (1994), Star Trek: First Contact (1996), Star Trek: Insurrection (1998), and Star Trek: Nemesis (2002). Worf is the first Klingon main character to appear in Star Trek, and in 11 seasons as a regular character on TNG and then DS9, has appeared in more Star Trek franchise episodes than any other character. He is portrayed by actor Michael Dorn.
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book by William Shatner