When ( modern ) Klingon Worf and his crewmates see an original-series Klingon, his crewmates ask about the stunning difference in appearance ; Worf says tersely that the matter is something Klingons " do not discuss with outsiders ".

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.

Worf, played by Michael Dorn, is a main character in Star Trek: The Next Generation and in seasons four to seven of Star Trek: Deep Space Nine.

In First Contact Worf is initially commanding USS Defiant before he is beamed aboard the Enterprise, while in Insurrection Picard jokes that Worf was late for his bridge shift due to being accustomed to life aboard Deep Space 9.

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.

After the conclusion of the Dominion War, Worf is made the Federation ambassador to Qo ' noS ( the Klingon homeworld ), as depicted in the Star Trek: Deep Space Nine series finale " What You Leave Behind ".

Worf continued to appear in TNG films which is explained in various ways such as rescue ( Star Trek: First Contact ) and leave ( Star Trek: Insurrection ).

In another reality, Worf is first officer of the Enterprise serving under Capt.

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.

In the official comic book prequel to the movie Star Trek, Worf is a General in the Klingon Empire who is dispatched to deal with Romulan Captain Nero and his significantly altered mining vessel, the Narada.

When Captain Data agrees, Worf is beamed back to the ship, giving the Narada time to fire on the Enterprise.

Worf is assumed to have survived, but this is never explicitly mentioned in the comic.

Worf is a popular character among fans.

The episode " Heart of Glory ", which focuses on Worf and his relationship to other Klingons, is credited with planting " many seeds for successive Klingon storylines ... and new insights into Klingon culture ".

In the episode " By Inferno's Light ", Martok escapes and returns to the Alpha Quadrant with Elim Garak, Worf, and Julian Bashir, and is made commander of the Klingon forces on Deep Space Nine.

Vulcan's Forge is also mentioned in " Change of Heart ", in which Worf wants himself and Jadzia Dax to honeymoon there, as well as in episodes " The Forge ", " Awakening " and " Kir ' Shara " from Star Trek: Enterprise.

The station's first appearance in Star Trek: The Next Generation was during the sixth season episode " Birthright " and in addition, two Next Generation characters, Miles O ' Brien and ( from Season 4 onwards ) Worf, became regular members of DS9.

Worf was at first not intended to be a regular character, since Gene Roddenberry wanted to avoid " retreads of characters or races featured prominently in the original Star Trek series ", and so 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 ( 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 ).

Worf avoided romantic attachments with non-Klingons during his first few years on board the Enterprise-D. As Worf explained to both Riker and Guinan, he felt that non-Klingon females would be too fragile, and that he would have to restrain himself too much.

She was the first non-Klingon that Worf could " physically " be with in the traditional Klingon way.

He asked Worf to be his first officer.

Worf avoided Ezri at first, confused about what to do about this new situation.

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

Worf appears at first to be oblivious to this attention, and in the fifth-season episode " Looking for par ' Mach in All the Wrong Places " he becomes enamored with a female Klingon named Grilka.

This is an irony, as it was Worf who had killed Duras to enable Gowron to ascend to the Chancellorship in the first place.

Jadzia was married to Lieutenant Commander Worf, who at first refuses to speak to Ezri, convinced that Jadzia has gone on to Sto-Vo-Kor and can no longer exist through the Dax symbiont.

Indeed, during the first year of the Defiants commission at the station, she also serves as the ship's first officer, a situation that only alters upon the arrival of Lt Commander Worf, who assumes the role as the next most senior Starfleet officer of command grade.

The first was Colonel Worf ( Star Trek VI: The Undiscovered Country ), who is the grandfather of Worf ( TNG ) and father of Mogh.

During their first meeting Worf and K ' Ehleyr have a heated argument, only barely managing to concentrate on the job at hand.

While Picard and Riker conceal themselves, Worf and K ' Ehleyr, clad in full traditional Klingon command uniforms, appear as captain and first officer of the Enterprise, informing Captain K ' Temoc of the T ' Ong that the war is over and ordering them to surrender.

* This is the first episode of Star Trek: The Next Generation to feature Klingons other than Lt. Worf.

With the advent of the series Star Trek: The Next Generation ( 1987 )— in which one of the main characters, Worf, was a Klingon — and successors, the language and various cultural aspects for the fictional species were expanded.

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 was born in 2340 on the Klingon homeworld as the son of Mogh.

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.

When they and the Enterprise crew discovered that it was in fact Duras ' father that betrayed the Empire, Worf, realizing that the powerful House of Duras could not be publicly shamed without throwing the Empire into civil war, accepted a ritual discommendation from the Klingon High Council.

When Sisko eventually returned with a fleet of Federation ships to retake the station, Worf and Martok lobbied Gowron to send Klingon ships to join the battle.

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

When the Klingon forces suffer a crushing defeat, Worf agrees to Nero's demand to board a shuttle and come on board the Narada.

Worf shows his appreciation by agreeing to perform the elaborate Klingon tea ceremony with her-something not usually shared with outsiders-while noting that she must not actually consume the tea as it is quite poisonous to humans.

Later in the series, she becomes involved with the Klingon character Worf, and they marry during the sixth season of the show.