In science fiction circles, he is predominantly known for the part of Alexander Rozhenko, son of Star Trek: The Next Generations Klingon security officer, Mr. Worf — a recurring role he played for 7 episodes across several seasons.

Colonel Worf was played by Michael Dorn, the same actor who portrays Worf in The Next Generation, Deep Space Nine, and in the Next Generation-based movies.

The last episode was taped in early 1989 ( but aired that March ), which did not signify an end of any sort, but was played out as a high event-the cast went on a space adventure with guest star Michael Dorn as Lt. Worf, from Star Trek: The Next Generation ( in the episode, " Webtrek ").

This retcon itself was later retconned, in Star Trek: Enterprise, via a storyline in which it is revealed that the original, quasi-human appearance of the Klingons is due to a genetic mutation caused by an engineered virus – as it happened, " genetic engineering " ( Chief O ' Brien ) and " viral mutation " ( Dr. Bashir ) had been the guesses Worf refused to confirm or deny.

In Star Trek VI: The Undiscovered Country, Worf's grandfather Colonel Worf ( also portrayed by Michael Dorn ) appears in a role 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.

Worf also has a human brother, Nikolai, through his adoption by the Rozhenkos, with whom he often quarreled.

Worf did not take the Rozhenkos ' last name, preferring to be addressed by the Klingon designation " Worf, son of Mogh ".

Although Worf was raised by humans, he considered himself a Klingon at heart and studied the ways of his people.

He then revealed his true identity, informing Worf that Duras accused their father of betraying the Klingon Empire by helping the Romulans attack Khitomer.

K ' Ehleyr was eventually murdered by Duras when she found evidence of his involvement in the effort to discredit Worf.

Worf learned that the Klingons were planning to invade Cardassia because of a coup which they had been led to believe was engineered by the Dominion.

While on a mission to the Gamma Quadrant, Worf was captured and sent to a prison camp where he met the real General Martok and was reunited with the real Dr. Bashir, who had both been captured and replaced by changelings.

Though Worf is initially estranged by his now adult son, and skeptical of his son's desire to serve the Empire, he eventually reconciles with him and his son joins the House of Martok.

The informant is subsequently executed by the Dominion, causing Captain Benjamin Sisko, the commander of Deep Space Nine, to caution that Starfleet might not grant Worf his own command after this incident, but adds that had he been forced to choose between his duty and his wife, he would have done the same thing.

By late 2374, Worf and Jadzia are married less than a year when they decided to try to have a child despite the extreme difficulties posed by the disparate biologies of Trill and Klingons.

After a brief battle, Worf killed Gowron ; by right he was proclaimed the new chancellor of the Klingon High Council.

They follow Klingon customs as first taught to them by Worf ( DS9: " Children of Time ").

After Terran rebels take over Terek Nor, Worf tries to recapture the station but is defeated by the rebels who have a new ship based on the design of the Defiant.

Already prepared for such a tactic, Nero succeeds in surprising Worf by impaling him through the back with a large mechanical tentacle.

A grateful Martok would later invite Worf ( who had earlier been stripped of his family name by Gowron ) to join Martok's house.

After Worf joined Martok's house, his son Alexander would be inducted into the house, as would Jadzia Dax, when she married Worf ( the latter was initially opposed by Sirella ).

The Enterprise arrives in time to save the crew of the USS Defiant which is being commanded by Lieutenant Commander Worf.

This is most definitively demonstrated in Star Trek: Insurrection where Picard and Worf distract an erratically behaving Data by singing two parts of A British Tar, compelling Data to sing the third part.

More recently, in the television series Star Trek: The Next Generation, the crew is sometimes seen playing five-card stud, often an officer's game hosted by Commander William Riker and usually entered by Data ( as part of his efforts to become more human ), Worf, Geordi LaForge, Dr Beverley Crusher, Deanna Troi and occasionally by other crewmembers.

Several " tall, slim, black actors " auditioned for Worf before Michael Dorn came along, walking into the audition in character and not smiling ( Indeed, Michael Dorn found the seriousness of the role, especially during the audition, at first to be uncomfortable, since he considers himself a comedian at heart ).

* Michael Dorn as Lieutenant Commander Worf

Unlike his TNG co-stars, this was Michael Dorn's second Star Trek film, having appeared on Star Trek VI: The Undiscovered Country, portraying his TNG character's grandfather, Colonel Worf, who defended Kirk and McCoy on their trial.

Other Starfleet members included former Enterprise chief of security, and commander of the USS Defiant, Worf ( Michael Dorn ).

He said: " When I got married my best man was Brent ( Spiner, who portrayed the ST: TNG character Lieutenant Commander Data ) and my groomsmen were Michael ( Dorn, Lieutenant Worf ) and Jonathan ( Frakes, Commander Riker ) and Patrick ( Stewart, Captain Picard ).

He also reprised his role of Riker for a Next Generation cutaway on an episode of Family Guy that also featured his co-stars Patrick Stewart and Michael Dorn as their respective roles of Picard and Worf.

* Michael Dorn as Lieutenant Commander Worf

Also, in a nod to the Next Generation series, Michael Dorn plays Colonel Worf, who defends Kirk and McCoy at their trial.

In the fourth season, Michael Dorn joins the cast of Deep Space Nine as the Klingon character Worf.

Patrick Stewart reprised the roles of Jean-Luc Picard and Locutus, Michael Dorn voiced Worf, Denise Crosby reprised Sela and J. G.

Michael Dorn ( born December 9, 1952 ) is an American actor and voice artist who is best known for his role as the Klingon Worf from the Star Trek franchise.

Dan Curry created the bat ' leth for Michael Dorn's Star Trek: The Next Generation character, Worf in 1990.

Other Star Trek actors such as Michael Dorn ( Worf on TNG ), Brent Spiner ( Data on TNG ), Colm Meaney ( Miles O ’ Brien on TNG and Star Trek: Deep Space Nine ), LeVar Burton ( Geordi La Forge on TNG ), Nichelle Nichols ( Uhura on Star Trek: The Original Series ), Avery Brooks ( Benjamin Sisko on DS9 ), Paul Winfield ( Clark Terrell in Star Trek II: The Wrath of Khan ), David Warner ( various characters, most notably Gul Madred in " Chain of Command ", a two-part episode of TNG ) and Kate Mulgrew ( Kathryn Janeway on Star Trek: Voyager ) were guest or recurring stars in the series.

The role of Worf required a black actor in order to make the Klingon make up easier to apply, and was expected to be a recurring character, but following the casting of Michael Dorn and his work in " Encounter at Farpoint ", the role was expanded.

* Star Trek: The Next Generation and Star Trek: Deep Space Nine ( Worf ( Michael Dorn ))

* Michael Dorn is famous for playing Worf on Star Trek: The Next Generation.

The game features voice acting performances by several Star Trek actors, including Patrick Stewart ( Jean-Luc Picard ) and Michael Dorn ( Worf ).

In a cutaway of Star Trek: The Next Generation, Patrick Stewart, Jonathan Frakes and Michael Dorn are seen making fun of Worf ( or rather, Worf's cranial ridges ).