Worf

Lieutenant Commander Worf

Worf aboard the USS Enterprise (NCC-1701-D) during season 7 set in 2370.
Species	Klingon
Affiliation	United Federation of Planets Starfleet Klingon Empire House of Martok House of Mogh
Posting	USS Enterprise-E (NEM) Qo'noS (DS9 Season 7) Deep Space Nine (DS9 Seasons 4-7) USS Defiant (DS9 Seasons 4-7) USS Enterprise-D (TNG Seasons 1-7, GEN)
Position	Strategic Operations Officer (USS Enterprise-E, Deep Space Nine) First Officer (USS Defiant) Chancellor (DS9 Season 7) Briefly. Abdicates in favor of Martok Federation Ambassador (DS9 Season 7) Chief Security Officer (USS Enterprise-D - TNG Seasons 1-7) Helmsman (USS Enterprise-D - TNG Season 1)
Rank	Lieutenant Commander (DS9, Movies) Lieutenant (TNG Seasons 3-7) Lieutenant, Junior Grade (TNG Season 1-2)
Father	Mogh (Biological, deceased) Sergey Rozhenko (adopted)
Mother	Unknown (Biological, deceased) Helena Rozhenko (adopted)
Children	Alexander Rozhenko
Partner	Jadzia Dax K'Ehleyr
Portrayed by	Michael Dorn
First appearance	"Encounter at Farpoint" (TNG)

Unknown (Biological, deceased)

Worf, son of Mogh (wo'rIv 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 has appeared in more Star Trek franchise episodes than any other character. He is played by the actor Michael Dorn.

Initially, Worf was not intended to be a regular character, as Gene Roddenberry wanted to avoid "retreads of characters or races featured prominently in the original Star Trek series". Accordingly, the June 1, 1987 cast portrait did not include Worf. Several "tall, slim, black actors" auditioned for Worf before Michael Dorn came along, walking into the audition in character and not smiling.

The House of Mogh was a family of high social and political rank which was for a time represented on the Klingon High Council. In Star Trek VI: The Undiscovered Country (set around 70 years before the Next Generation era began), Colonel Worf (also portrayed by Michael Dorn) appears as the legal advocate of Captain James T. Kirk and Dr. Leonard McCoy after they are accused of killing Chancellor Gorkon of the Klingon High Council. He was also a member of the Klingon delegation at Camp Khitomer. Although not explicitly stated, he was intended to be Worf's grandfather.