This articlelists characters ofStar Trek that received attention from third-party sources in their various canonical incarnations. This includes fictional major characters and fictional minor characters created forStar Trek, fictional characters not originally created forStar Trek, and real-life persons appearing in a fictional manner, such as holodeck recreations.
Bajoran characters are listed by family name, which is stated first.
JoinedTrills are listed by the name of thesymbiont, which replaces the family name.
| Character | Actor | Appearances | Description |
|---|---|---|---|
| Elim Garak | Andrew J. Robinson | Past Prologue (DS9)recurring thereafter | Cardassian male, former member of the Cardassian intelligence organizationObsidian Order, who fell from grace and was exiled toDeep Space Nine, where he worked in his own tailor shop. Son ofEnabran Tain, former head of the Obsidian Order, and archenemy ofGul Dukat. |
| Rachel Garrett | Tricia O'Neil Kacey Rohl | Yesterday's Enterprise (TNG), S31 | Human female captain of theEnterprise-C, which traveled unintentionally through a time portal. Garrett decided to return the ship to her own timeline, which resulted in her death though brought about peace.[1] A younger version of Garrett is a Starfleet liaison to theSection 31 organization.[2] |
| Amanda Grayson | Jane Wyatt Majel Barrett (Voice) Cynthia Blaise Winona Ryder Mia Kirshner | Journey to Babel (TOS),Yesteryear (TAS), TVH, TFF, ST09, Lethe,Will You Take My Hand?,Brother (DSC) Charades (SNW) | Spock's human mother, married toSarek.[3] In one timeline, she dies between the events inStar Trek IV: The Voyage Home and theStar Trek: The Next Generation episode "Sarek".[3] In the alternate timeline depicted in the 2009Star Trek movie, she dies whenVulcan is destroyed. Grayson was first portrayed byJane Wyatt, who appears in both "Journey to Babel" andThe Voyage Home.Majel Barrett provided the voice of Amanda in theanimatedStar Trek series. Cynthia Blaise played her inStar Trek V: The Final Frontier. In the 2009 filmStar Trek, the role of Amanda Grayson was played byWinona Ryder.[4]Mia Kirshner played Amanda on the prequel seriesStar Trek: Discovery[5] andStar Trek: Strange New Worlds. |
| Guinan | Whoopi Goldberg Isis J. Jones Ito Aghayere | The Child (TNG),recurring thereafter GEN NEM PIC (season 2) | Enigmatic femaleEl-Aurian Bartender of the Ten Forward Lounge on theEnterprise-D, whose wise counsel proved invaluable many times. She shares a close bond with Captain Picard (a relationship "beyond friendship, beyond family"). |
| Character | Actor | Appearances | Description |
|---|---|---|---|
| Hugh | Jonathan Del Arco | I, Borg,Descent,Descent, Part II (TNG),The End is the Beginning,The Impossible Box,Nepenthe (PIC) | First human drone to be de-assimilated by the Federation. After reestablishing his individualism on theEnterprise D, he was later returned by his choice to the Borg. Hugh unintentionally disrupted Borg systems and was left stranded. He was found by Lore, Data's brother, and kept under his control. He was found by Captain Picard and again was freed. Hugh was last working on the partially destroyed Borg cube under control of the Romulans. There, he worked to de-assimilate any that still could be saved. Hugh was killed there protecting his friends by a Romulan agent named Narissa.[6] |
| Character | Actor | Appearances | Description |
|---|---|---|---|
| Ihat | None | Masks (TNG) | A masculine personality associated with a ceremonialneckplate with a wings-like design. Data assumes the personality of Ihat multiple times.[7][8][9][10] |
| Ilia[11] | Persis Khambatta | TMP | A female native of Delta IV, she was once involved in a romantic relationship withWillard Decker. As aStarfleet lieutenant, she was assigned to theEnterprise as navigator during theV'ger crisis. She was killed on the Bridge by one of V'ger's probes, but her appearance was later given to another V'ger probe, which was put aboard theEnterprise and assigned to learn about the human "infestation". However, this "Ilia probe" was constructed so perfectly by V'ger that it even contained the real Ilia's memories, which were deeply suppressed. Decker, however, was able to access those memories and establish a personal rapport with the probe. Later, when he learned that V'ger needed a "human element" to reveal its data – and, in so doing, stop its attack on Earth – he input the final code sequence manually, and, together with the Ilia probe, merged with V'ger. Ilia was later listed as "missing" in action. |
| Character | Actor | Appearances | Description |
|---|---|---|---|
| Kathryn Janeway | Kate Mulgrew | Caretaker (VOY)recurring thereafter,NEM,PRO | Captain of theUSSVoyager during its seven years in the Delta Quadrant. Appeared briefly as Admiral Janeway inNEM and regularly as both a hologram and the human Admiral inStar Trek: Prodigy. |
| Character | Actor | Appearances | Description |
|---|---|---|---|
| Kahless | Robert Herron Kevin Conway | The Savage Curtain (TOS), Rightful Heir (TNG) | LegendaryKlingon warrior and first emperor of the Klingon Empire; also known as "the Unforgettable" among his people. A clone created in 2369 was made ceremonial emperor byGowron. |
| Lenara Kahn | Susanna Thompson | Rejoined (DS9) | Trill woman hosting the Kahn symbiont, which, as Nilani Kahn in a former life, was married to Torias Dax. |
| Verad Kalon | John Glover | Invasive Procedures (DS9) | Verad Kalon was an unjoined Trill and failed host candidate who briefly stole the Dax symbiont from Jadzia Dax in 2370. |
| Kamala | Famke Janssen | The Perfect Mate (TNG) | An empathic metamorph from Krios Prime. Since her birth, she was intended to be Valtese Chancellor Alrik's Kriosian peace bride in an effort to reunite the two planets. |
| Kang | Michael Ansara | Day of the Dove (TOS), Blood Oath (DS9), Flashback (VOY) | Legendary Klingon warrior andDahar Master whose exploits assured him a place in the Hall of Heroes, as told in G'Trok's poem "The Fall of Kang", an epic so important it is required reading at Starfleet Academy. Commander Kang once faced James Kirk in 2269, but later joined him to defeat their true enemy, an energy life form living off their shared hatred when trapped aboard theEnterprise as undying fodder. Captain Kang later squared off against Captain Sulu's USSExcelsior during the tensions preceding the Khitomer Conference in 2293. Kang had already met Curzon Dax by then on the Klingon colony Korvat, when Dax intentionally angered Kang to foster a bond—a calculated risk as he walked out during a long diatribe by the shocked Klingon. The Trill envoy became such a trusted family friend that Kang's firstborn, a boy, was made his godson and named "Dax" in his honor. The boy was among those later killed in revenge by the marauding Albino and fostered a blood oath of revenge in turn among Kor, Koloth, and Dax that was finally carried out in 2370 and led toDahar Master Kang's death as he struck the death blow on his enemy. He also had defeated T'nag and his army with only colleagues Kor and Koloth, according to Kor's tale in 2372, and later feasted on the leader's heart. |
| Rayna Kapec | Louise Sorel | Requiem for Methuselah (TOS) | Android created in the perfect likeness of a young human woman |
| Kargan | Christopher Collins | A Matter of Honor (TNG) | Klingon captain of theIKS Pagh in 2365. He was short, heavyset, and demanded strict adherence to his authority. When he learned of the space organism eating away at a small section of thePagh's hull, and that theEnterprise-D had directed an intense scanning beam at that specific area for two minutes, Kargan believed the Federation starship had landed a first strike against his vessel, so he vowed to attack and destroy theEnterprise-D. He suspected that CommanderWilliam Riker, his acting first officer, was complicit in theEnterprise-D's attack, so, to test his loyalty, Kargan demanded to know the surest method of attack against the Federation starship. When Riker refused to break his oath toStarfleet, Kargan relented, knowing at least that Riker wasn't a traitor or a coward. When Riker activated an emergency transponder given to him byWorf, Kargan, believing it was a weapon, demanded that Riker give it to him. Kargan was then beamed aboard theEnterprise-D, and Riker was able to assume command of thePagh and defuse the brewing battle. Later, when Kargan was returned to thePagh, Riker refused to resume his station, so Kargan slugged him and ordered him removed from the ship. That action allowed Kargan to save face and regain honor in the eyes of his officers, and likely averted an assassination attempt by LieutenantKlag. |
| Anton Karidian | Arnold Moss | The Conscience of the King (TOS) | A Shakespearian actor (and father of Lenore Karidian) once known as Kodos the Executioner, Governor of Tarsus IV |
| Lenore Karidian | Barbara Anderson | The Conscience of the King (TOS) | A Shakespearian actor (and daughter of Anton Karidian). |
| Karina | Annette Helde | Visionary (DS9) | Romulan officer who, in 2371, was part of a delegation toStarbaseDeep Space Nine to studyStarfleet Intelligence reports onthe Dominion. The Romulans regarded the Dominion as the greatest threat to theAlpha Quadrant, and intended to destroyDeep Space Nine before collapsing theBajoranWormhole to prevent any Dominion incursion from theGamma Quadrant. |
| Walker Keel | Jonathan Farwell | Conspiracy (TNG) | Starfleet captain and commanding officer of the USSHoratio who warnedPicard about an alien invasion. |
| Edith Keeler | Joan Collins | The City on the Edge of Forever (TOS) | In 1930, during theGreat Depression, Keeler was a social worker who died in a traffic accident. Centuries later, during a survey of the Guardian of Forever by the USSEnterprise, the ship's Chief Medical Officer, Dr. Leonard McCoy, during a temporary bout of insanity brought on by an accidental injection of cordrazine, escaped into Earth's past. While there, he saved Keeler's life, which sparked a chain of events throughout the timeline, essentially changing history. In the altered timeline, Keeler, a passionate believer in peace, founded a movement which delayed the entry of the United States into World War II, thus paving the way for an Axis victory. Subsequently, Starfleet, the Federation, and the USSEnterprise were gone, but the proximity to the Guardian of Forever by the landing party allowed Captain James T. Kirk and First Officer Spock to follow McCoy into the past. Kirk and Spock were able to prevent McCoy from saving Keeler's life, thus restoring the timeline. These events were particularly stressful for Kirk, as he had fallen in love with Keeler. |
| Keenser[12] | Deep Roy | ST09 STID STB | In 2258, in the alternate reality, Keenser worked with Montgomery Scott at an automated Federation outpost on Delta Vega. He was Scott's only company for months before Spock and James T. Kirk arrived. After theEnterprise successfully defeated Nero and the Romulan mining vessel Narada, Keenser joined theEnterprise crew as an engineer under Scott. |
| Keevan | Christopher Shea | Rocks and Shoals,The Magnificent Ferengi (DS9) | A Vorta field commander who sacrificed his Jem'Hadar troops to save his own life. He was later killed by Gaila when Quark and his team tried to trade him back to the Dominion for Quark's mother. |
| K'Ehleyr | Suzie Plakson | The Emissary (TNG), Reunion (TNG) | Half-Klingon, half-human.Worf's mate andAlexander Rozhenko's mother. Killed by Duras. |
| Keldar | None | The House of Quark (DS9) | AFerengi, deceased husband ofIshka and father ofQuark andRom. (Only discussed, never seen.) |
| Kell | Larry Dobkin | The Mind's Eye (TNG) | Klingon ambassador who accompanied theEnterprise-D to the planet Krios in 2367 to investigate Klingon GovernorVagh's claim thatStarfleet was supplying weapons to Kriosian rebels. Kell was colluding with theRomulans to disrupt the alliance between the Federation and the Klingon Empire. The Romulans had "conditioned"Geordi La Forge to receive E-band transmissions through hisVISOR. Kell carried the transmitter that instructed La Forge to kill Governor Vagh, but the attempt failed. Kell was taken into custody by Vagh. |
| Captain Keogh | Alan Oppenheimer | The Jem'Hadar (DS9) | Commanding officer of the ill-fated USSOdyssey. |
| Kes | Jennifer Lien | Caretaker (VOY),recurring thereafter | Ocampa woman, partner ofNeelix who joins theUSSVoyager crew for several years before evolving into a different state and so being forced to leave. |
| Kessick | Richard Lineback | The Xindi (ENT) | Xindi Primate, slave in aTrellium-D mine |
| Harry Kim | Garrett Wang | Caretaker (VOY),recurring thereafter | Ensign and operations officer aboard theUSSVoyager during its seven years in the Delta Quadrant. Despite his rank of ensign, he sits on the senior staff meetings and occasionally takes over command for "night" shifts. |
| Kira Meru | Leslie Hope | Wrongs Darker Than Death or Night (DS9) | Mother of Kira Nerys and was a comfort woman for Gul Dukat for seven years. |
| Kira Nerys | Nana Visitor Unknown child actress | Emissary (DS9),recurring thereafter | Former resistance fighter against Cardassian occupation, a Bajoran Militia officer (Major, later Colonel) assigned as Benjamin Sisko's first officer on the starbaseDeep Space Nine. She has a Starfleet field commission of Commander when she serves as advisor for Damar's rebellion against the Dominion. At the end of the series, she takes over command ofDeep Space Nine. |
| Kira Pohl | Wrongs Darker Than Death or Night (DS9) | Brother ofKira Nerys | |
| Kira Reon | Wrongs Darker Than Death or Night (DS9) | Brother ofKira Nerys | |
| Kira Taban | Thomas Kopache | Wrongs Darker Than Death or Night,Ties of Blood and Water (DS9) | Father ofKira Nerys |
| Aurelan Kirk | Joan Swift | Operation -- Annihilate! (TOS) | Wife of George Samuel Kirk, Jr., mother of Peter Kirk, sister-in-law ofJames T. Kirk |
| George Samuel Kirk, Jr. | William Shatner (TOS) Dan Jeannotte (SNW) | Operation -- Annihilate! (TOS) | Brother ofJames T. Kirk. James usually referred to his brother by his middle name, "Sam". |
| George Samuel Kirk, Sr. | Chris Hemsworth | ST09 | Father ofJames T. Kirk and George Samuel Kirk, Jr. Served as first officer on theStarfleet vessel USSKelvin. |
| James T. Kirk | William Shatner (TOS) Chris Pine (ST09, STID, STB) Paul Wesley (SNW) | TOS,TAS,TMP,WOK,SFS,TVH,TFF,TUC,GEN,ST09,STID,STB | Captain of the USSEnterprise (NCC-1701 andNCC-1701-A), major character in the original and first animatedStar Trek series and tenStar Trek movies. InGEN Kirk is presumed dead; in fact he has been in the Nexus for 75 years when he is discovered by Jean-Luc Picard; at the end Kirk helps save the universe at the cost of his own life at the age of 137 years; arunning gag in the film series is that although Kirk has many love affairs with women, he has only one child: his son David Marcus from an affair with Dr. Carol Marcus. |
| Peter Kirk | Craig Hundley | Operation -- Annihilate! (TOS) | Son of George Samuel, Jr. and Aurelan Kirk, nephew ofJames T. Kirk |
| Winona Kirk | Jennifer Morrison | ST09 | James T. Kirk's mother |
| K'Kath | Chad Haywood | Real Life (VOY) | Klingon friend of Jeffrey in the holographic family program modified by Torres. |
| Klaa | Todd Bryant | TFF | Young Klingon captain of a Bird-of-Prey. He is also the gunner, as the tactical scope is mounted above his command chair and lowers like a periscope when he wants to fire the ship's disruptors. He is bored with shooting space garbage, such as Earth'sPioneer 10 probe, and longs for a bigger challenge to make a name for himself. When he learns that theEnterprise-A and CaptainJames T. Kirk are headed to Nimbus III, he arranges to intercept them. Klaa shoots at but misses theEnterprise, which suddenly engages warp speed. He follows her to Sha Ka Ree and this time scores a hit. He orders theEnterprise to surrender, but General Korrd calls him off and forces him to rescue Kirk from the surface of Sha Ka Ree. At a "cocktail party" aboard theEnterprise, he salutes Kirk as a fellow warrior. One of Klaa's more memorable features, besides his muscles, is his wild "shock rock" hair.[original research?] Noncanon: In the movie novelization, Klaa's Bird-of-Prey is calledOkrona. |
| Klag | Brian Thompson | A Matter of Honor (TNG) | Klingon lieutenant and second officer of IKSPagh in 2365. He challenged CommanderWilliam Riker's authority over him as first officer ofPagh during an officer-exchange program. After Riker demonstrated his authority over him, Klag agreed to take his orders and even respected the commander for his strength. Klag's father had once been captured in battle byRomulans, but not allowed to die. He eventually escaped, and now lives onQo'noS, honorless, waiting for death by natural causes. For that reason, Klag refuses to see him. When Captain Kargan suspected that Riker was complicit inEnterprise-D's "attack" onPagh, Klag disagreed and defended the commander. |
| KlingonAmar Captain | Mark Lenard | TMP | He commanded threeK't'inga-class battle cruisers in an attack againstV'ger in Quad L-14. His flagship, the Imperial Klingon CruiserAmar, was the last to be destroyed. |
| Klingon Captain | K.L. Smith | Elaan of Troyius (TOS) | He commanded theKlingon warship that stalked theEnterprise through the Tellun Star System. After Kryton had sabotaged theEnterprise's warp engines, the Klingon demanded that Kirk surrender unconditionally and immediately. |
| K'mpec | Charles Cooper | Sins of the Father, Reunion (TNG) | Klingon chancellor and supreme commander who oversaw Worf's discommendation. Later poisoned byDuras and succeeded byGowron. In his time, K'mpec served as leader of the Klingon Empire longer than anyone previously. |
| K'mtar | James Sloyan | Firstborn (TNG) | The adultAlexander Rozhenko from a possible future. |
| K'nera | David Froman | Heart of Glory (TNG) | Klingon commander of aK't'inga-class battle cruiser that was patrolling the area of theRomulan Neutral Zone in 2364, seeking the whereabouts of the IKST'Acog. When he learned that the criminals Korris, Konmel, and Kunivas had been rescued by theEnterprise-D, he plotted an intercept course and demanded that CaptainJean-Luc Picard turn them over when he arrived. By that time, however, all three Klingons had died from injuries or were killed during their escape attempt. |
| Kodos | Arnold Moss | The Conscience of the King (TOS) | Governor of Tarsus IV, also known as "the Executioner", who engaged in a large-scaleeugenics program to counter the impending threat of starvation to the colony; later assumed the role of actorAnton Karidian leading a traveling Shakespeare company called the "Karidian Players". |
| Kohlar | Wren T. Brown | Prophecy (VOY) | Klingon commander of agenerational starship of the D7 class, leader of a group of Klingons who were searching for thekuva'magh, or "savior" of Klingon culture. Kohlar and his followers are found to be infected with the Klingonnehret retrovirus disease byVoyager's holographic Doctor, which is cured with DNA from B'Elanna Torres's unborn daughter Miral Paris. |
| Kol | J.R. Quinonez Leslie Jordan | The Price (TNG), False Profits (VOY) | One of two Ferengi stranded in the Delta Quadrant after attempting to secure the Barzan wormhole for themselves. Crash-landing on the Takaran homeworld, they insinuated themselves to be the Holy Sages prophesied by the Takaran "Song of the Sages" to exploit the Takarans for profit. |
| Kolopak | Henry Darrow | Tattoo (VOY), Basics, Part 1 (VOY) | Father ofChakotay |
| Koloth | William Campbell James Doohan (Voice) | The Trouble with Tribbles (TOS), More Tribbles, More Troubles (TAS), Blood Oath (DS9) | Klingon captain who faced Kirk twice overtribbles; later, asDahar Master, he swore a blood oath with Kor, Kang and Curzon Dax to kill the Albino. Koloth was killed during the assault on the Albino's fortress.James Doohan voiced the character in the animated episode. |
| Sirna Kolrami | Roy Brocksmith | Peak Performance (TNG) | Zakdorn master strategist and consultant for war games between theEnterprise-D and the USSHathaway. Master in the game ofStrategema. |
| Komack | Byron Morrow | Amok Time (TOS) | Starfleet admiral who ordersCaptain Kirk to Altair VI rather thanVulcan until pressured byT'Pau |
| Anastasia Komononov | Nana Visitor | Our Man Bashir (DS9) | A Russian KGB colonel in Bashir's secret agent program. Due to a transporter malfunction, Komononov's physical parameters were temporarily modelled on Kira. |
| Konmel | Charles H. Hyman | Heart of Glory (TNG) | Klingon lieutenant who, with Korris and Kunivas, left the Klingon Defense Force to pursue a life in which he could live like a "true Klingon". In 2364, the trio stole theTalarian freighterBatris and subsequently destroyed the IKST'Acog, which had been sent to retrieve them. After being rescued by theEnterprise-D, Korris and Konmel lied to CaptainJean-Luc Picard about the battle, but later revealed their true intentions to Lieutenant (j.g.)Worf. By then, Klingon commander K'near had apprised Picard of the Klingons' criminal status, so Picard detained them in the brig. They escaped, but Konmel was killed in a firefight withEnterprise-D security. To his credit, though, it took three phaser shots to bring him down. |
| Konsab | None | Face of the Enemy (TNG) | Romulan commander and former instructor of military history at the Romulan Intelligence Academy. His main theme consisted of theories on the differences between the military and the Tal Shiar. He believed that military officers must trust one another to function. (The dialogue was unclear, but Konsab may have been Commander Toreth's father. She described him as an "idealistic old man" and a "devoted citizen who only tried to speak his mind". The Tal Shiar dragged him from his home in the middle of the night, and Toreth never saw him again.) |
| Kor | John Colicos James Doohan (Voice) | Errand of Mercy (TOS), The Time Trap (TAS), Blood Oath, The Sword of Kahless, Once More unto the Breach (DS9) | The first named Klingon to appear inStar Trek, as an antagonist to Kirk. Commander Kor briefly ruled the planetOrgania as its military governor. A few years later, Captain Kor's ship, the IKSKlothos, was lost in the Delta Triangle, but later escaped with help from theEnterprise. John Colicos reprised the role in threeDeep Space Nine episodes, as an ally and friend of Jadzia and Ezri Dax.Dahar Master Kor was killed in glorious battle by acting as a decoy to hold off theJem'Hadar while the rest of the Klingon fleet escapes ("Once More Unto the Breach").James Doohan voiced the character in the animated episode. In March 2019,SyFy rated the Kor as the 3rd greatest Klingon of theStar Trek franchise, behind onlyWorf andMartok.[13] |
| Korax | Michael Pataki | The Trouble with Tribbles (TOS) | Klingon first officer of the IKSGro'th under CaptainKoloth. He instigates the bar fight on Deep Space StationK-7 by taunting Montgomery Scott, first calling Captain Kirk a "tin-plated dictator with delusions of godhood", then calling theEnterprise a "sagging old rust bucket that's designed like a garbage scow". However, when he says that theEnterprise should be hauled awayas garbage, Scotty throws the first punch. |
| Roger Korby | Michael Strong | What Are Little Girls Made Of? (TOS) | Deceased fiancé ofEnterprise nurseChristine Chapel whose android replica contended withCaptain Kirk on Exo III. |
| Korgano | None | Masks (TNG) | A masculine personality associated with Korgano's moon symbol and Korgano's silver mask. Captain Picard wears Korgano's mask and poses as Korgano to confrontMasaka.[14][8][9][10] |
| Jake Kurland | Stephen Gregory | Coming of Age (TNG) | Male Human civilian who became somewhat depressed about not getting the chance to take the final Starfleet Academy entrance exam on Relva VII in 2364. He stole the Type 7 shuttlecraftCopernicus and would have crushed on Relva VII, if Captain Picard had not directed him to perform a specific flight maneuver. |
| Kurn | Tony Todd | Sins of the Father (TNG) recurring thereafter, Sons of Mogh (DS9) | Younger brother ofWorf and also a son ofMogh who was not onKhitomer when the Klingon colony was destroyed by theRomulans. Years later, as a member of the Klingon Defense Force, Commander Kurn participated in an officer-exchange program withStarfleet that landed him aboard the USSEnterprise-D and reunited him with Worf ("Sins of the Father"). More than a year later, Captain Kurn commands his own K'Vort-class bird-of-prey and sides withGowron during theKlingon Civil War ("Redemption II"). More than four years later, a ruined Kurn appears on starbaseDeep Space Nine ("The Sons of Mogh") and asks Worf to kill him to restore his honor, which, along with his seat on theKlingon High Council and the House of Mogh's most valuable possessions, were stripped from him because Worf fought against Gowron during the chancellor's takeover ofCardassia Prime ("The Way of the Warrior"). |
| Character | Actor | Appearances | Description |
|---|---|---|---|
| Edward La Forge | Ben Vereen | Interface (TNG) | Starfleet commander and father ofGeordi La Forge. He is a Ph.D. exozoologist. |
| Geordi La Forge | LeVar Burton | Encounter at Farpoint (TNG)recurring thereafter,Timeless (VOY),GEN,FCT,INS,NEM,The Bounty (PIC)recurring thereafter | Chief engineer of theEnterprise-D and -E, lead curator of the Starfleet Museum in 2401, captain of the Galaxy-class USSChallenger in an alternate future |
| Silva La Forge | Madge Sinclair | Interface (TNG) | Starfleet captain and mother ofGeordi La Forge. She commanded the USSHera (NCC-62006), which disappeared without a trace. The life forms of Moriginy VII use her appearance to communicate with Geordi, who helps return them to the atmosphere where they live. |
| Lal | Hallie Todd | The Offspring (TNG) | Daughter ofData |
| Natima Lang | Mary Crosby | Profit and Loss (DS9) | Cardassian radical, the love ofQuark's life |
| Larg (Captain) | Michael G. Hagerty | Redemption II (TNG) | Klingon captain who supports theHouse of Duras's claim to the chancellorship during theKlingon Civil War of 2367–2368. Although he and CaptainKurn fight on opposite sides, they drink together in the First City onQo'noS after battle. |
| Larg (Hologram) | Stephen Ralston | Real Life (VOY) | Klingon friend of Jeffrey in the holographic family program modified byTorres. |
| Sam Lavelle | Dan Gauthier | Lower Decks (TNG) | Ensign and flight controller aboard theEnterprise-D. He is Canadian by heritage. He tests for the operations manager (ops) position on the Bridge, but believes that his friend, EnsignSito Jaxa, is more qualified. After Sito is suddenly killed during a secret mission, Lavelle is promoted to lieutenant junior grade and wins the assignment to ops. |
| Lazarus | Robert Brown | The Alternative Factor (TOS) | Lazarus-A was a Time traveling scientist who went insane when he found out his parallel universe counterpart Lazarus-B had found a way to go between two universes (One positive matter and one anti-matter). While Lazarus in the Positive Universe kept changing from Lazarus-A (Insane) to Lazarus-B (sane) the only place Both versions of Lazarus could meet together at the same time was within a negative magnetic Warp corridor between both universes (if they ever meet each other outside the magnetic Corridor within either universe both the meeting of the Positive matter and Negative Anti-matter would result in the destruction of both universes). After Captain Kirk learns the truth from Lazarus-B about Lazarus-A plan [who is trying to reach the anti-matter universe], Captain Kirk threw Lazarus-A into his Timespaceship/doorway into the magnetic corridor and then had his time spaceship/doorway destroyed by theEnterprise phasers; this action saved both universes since it also destroyed Lazarus-B Timeship/doorway as well-leaving both Lazarus A and Lazarus B trapped fighting forever in the magnetic corridor. |
| Leeta | Chase Masterson | Explorers (DS9) recurring thereafter | Bajoran woman employed as adabo girl inQuark's bar onDS9. She marriedRom after a brief romance withJulian Bashir. |
| Robin Lefler | Ashley Judd | Darmok (TNG), The Game (TNG) | Ensign aboard theEnterprise-D (engineering section) and friend ofWesley Crusher. Major character inStar Trek: New Frontier spinoff novels and in fan film projectStar Trek: Hidden Frontier |
| Elizabeth Lense | Bari Hochwald | Explorers (DS9) | Valedictorian inJulian Bashir'sStarfleet Medical School class, assigned Chief Medical Officer of the USSLexington. |
| Leskit | David Graf | Soldiers of the Empire (DS9) | AKlingon, pilot of the IKSRotarran when GeneralMartok assumes command. |
| Lt. Leslie | Eddie Paskey | Where No Man Has Gone Before (TOS)recurring thereafter | Lieutenant Leslie wears many hats aboard theEnterprise, from security officer to relief helmsman to manning the bridge engineering station. Although he was killed in the second-season episode "Obsession", he was apparently revived, and went on to appear in several subsequent episodes. |
| Janice Lester | Sandra Smith | Turnabout Intruder (TOS) | Former lover ofKirk, who temporarily swapped bodies with him. |
| Li Nalas | Richard Beymer | The Homecoming,The Circle,The Siege (DS9) | Bajoran resistance fighter who became a hero of mythological proportions after accidentally killing a Cardassian soldier |
| Abraham Lincoln | Lee Bergere | The Savage Curtain (TOS) | Alien creature faithfully masquerading asAmerican President Abraham Lincoln |
| Linnis | Jessica Collins | Before and After (VOY) | Daughter ofTom Paris andKes, and mother of Andrew, in an alternate timeline. |
| L'Naan | None | Prophecy (VOY) | A Klingon, daughter of Krelik, mother of Miral, grandmother ofB'Elanna Torres |
| Nicholas Locarno | Robert Duncan McNeill | The First Duty (TNG) | Classmate ofWesley Crusher's atStarfleet Academy. |
| Locutus | Patrick Stewart | The Best of Both Worlds Part 1 & 2 (TNG), Emissary (DS9),FCT | Drone within the Borg Collective made using the body of CaptainPicard. |
| Logan | Vyto Ruginis | The Arsenal of Freedom (TNG) | Chief Engineer of theEnterprise-D, later succeeded by Geordi La Forge |
| Gabriel Lorca | Jason Isaacs | DSC | Captain of the USSDiscovery, major character inStar Trek: Discovery. |
| Lore | Brent Spiner | Datalore (TNG)recurring thereafter | "Evil twin brother" of Lt. CommanderData. |
| Lori Ciana | Susan J. Sullivan | TMP | Starfleet officer who was killed during a transporter malfunction while beaming up to theEnterprise. CommanderSonak died in the same accident. In the TMP novelization by Gene Roddenberry, Ciana was a vice admiral and part of Commanding Admiral Nogura's inner staff. Her assignment was as xenopsychologist to nonhuman species inStarfleet Command, and she also served as Nogura's personal representative to the "new human" groups on Earth. She was a last-minute addition to theEnterprise crew, which needed an officer trained in her xenopsychiatric specialty. Her death was a terrific blow toJames T. Kirk, with whom she had lived for one year after theEnterprise's five-year mission. |
| Loskene | Barbara Babcock (Voice) | The Tholian Web (TOS) | Tholian commander who catches theEnterprise "trespassing in a territorial annex of the Tholian Assembly", where the USSDefiant (NCC-1764) disappeared into an area of spatialinterphase. Loskene agrees to wait for 1 hour and 53 minutes while theEnterprise effects rescue operations. However, when that time elapses, he attacks theEnterprise and later joins with another Tholian ship to create an "energy web" around theEnterprise. |
| Phillipa Louvois | Amanda McBroom | The Measure of a Man (TNG) | Starfleet captain and Judge Advocate General atStarbase 173. She prosecuted Captain Jean-Luc Picard after the loss of theStargazer (NCC-2893). |
| Lovok | Leland Orser | The Die Is Cast (DS9) | A Founder disguised as aRomulan Tal Shiar colonel in 2371. He was in command ofEnabran Tain's flagshipWarbird. When theObsidian Order and the Tal Shiar began their attack onthe Founders' homeworld, Lovok gaveOdo andElim Garak access to theirRunabout to escape, because "no changeling has ever harmed another". He offered Odo the chance to go with him and become one with the Great Link, but Odo declined. Lovok was beamed away by aJem'Hadar transporter. |
| Lumba | Armin Shimerman | Profit and Lace (DS9) | Name ofQuark's persona while pretending to be aFerengi female |
| Lursa | Barbara March | Redemption, Part I (TNG)recurring thereafter,Past Prologue (DS9),GEN | One of the sisters ofDuras. Time rated Lursa and B'Etor, second best villains of theStar Trek franchise in 2016.[15] |
| Lutan | Jessie Lawrence Ferguson | Code of Honor (TNG) | Planetary ruler who became enamored ofTasha Yar |
| Character | Actor | Appearances | Description |
|---|---|---|---|
| M-113 Creature | Sandra Gimpel | The Man Trap (TOS) | A creature native to planet M-113 that feeds off of salt and has the ability to project the appearance of anyone it wishes. |
| Bruce Maddox | Brian Brophy (TNG),John Ales (PIC) | The Measure of a Man (TNG), Stardust City Rag (PIC) | Starfleet commander and scientist who had opposedData's entry intoStarfleet on the grounds that Data "is not alive"; later tried and failed to have Data assigned to him for dis-assembly and research then started receiving self-evaluation reports from Data (cf. "Data's Day"). The backstory ofStar Trek: Picard reveals that Maddox attempted to reconstruct Data's positronic brain, resulting in the creation of Dahj and Soji. Following the attack on Mars and subsequent banning of synthetics, Maddox disappeared, and by the time of the series his whereabouts are still unknown, until Raffi Musiker tracks him to a place called Freecloud. Once Maddox is retrieved, he tells Picard that he sent Dahj and Soji to find the true reason behind the ban on synthetics and is subsequently murdered by his own colleague Dr. Agnes Jurati, who had overheard his conversation with Picard. |
| Madred | David Warner | Chain of Command (TNG) | Cardassian gul and torturer of a captured CaptainJean-Luc Picard |
| Mallora | Tucker Smallwood | The Xindi (ENT) recurring thereafter | Black Primate representative on theXindi Council, friend ofDegra; became an ally to the humans |
| Maltz | John Larroquette | SFS | Klingon officer who remains aboard hisBird-of-Prey while CommanderKruge beams down to theGenesis planet to wrest its secrets from Admiral Kirk. Maltz beams up the rest of the formerEnterprise's crew while Kirk and Kruge fight to the death. Kirk, victorious, tricks Maltz into beaming him (and Spock) aboard before the Genesis planet destroys itself. Kirk enters the Bridge and takes Maltz prisoner at phaser-point, promising to "kill" him later for not piloting the Bird-of-Prey away from Genesis. Maltz may have been Kruge's tactical officer, as he counted down the kellicams before the Bird-of-Prey came within firing range of theEnterprise. |
| Mara | Susan Howard | Day of the Dove (TOS) | Klingon science officer and wife ofKang. She is evacuated from his wrecked ship to theEnterprise and fears for how all Klingon survivors will be treated at Federation hands. Her concerns seem to be well-founded whenEnsign Chekov takes out her bodyguard and then begins assaulting her. Kirk and Spock rescue her, and then show her firsthand evidence of the alien "entity" that has invaded theEnterprise and pittedStarfleet officers and Klingons against each other. She explains to Kirk that her people are hunters because there are poor planets in the Klingon system, and they must push outward to survive. She brokers a meeting between Kang and Kirk, which eventually leads to a truce. With "good spirits" from both parties, the alien entity flees theEnterprise. |
| Carol Marcus | Bibi Besch Alice Eve | WOK,STID | Daughter of Admiral Alexander Marcus, Inventor of the Genesis Device, mother ofKirk's only known son. |
| David Marcus | Merritt Butrick | WOK,SFS | Son ofJames T. Kirk and Carol Marcus. Worked on developing the Genesis Device. Killed byKlingons on the Genesis planet. |
| Angela Martine | Barbara Baldavin | Balance of Terror,Shore Leave (TOS), Turnabout Intruder (TOS) | Martine first appears in "Balance of Terror" as a fire control specialist. Her wedding to Lieutenant Robert Tomlinson is postponed when theEnterprise receives a distress call from outposts being attacked byRomulans. The character later appears in "Shore Leave" as part of the landing party, and the communications officer in "Turnabout Intruder". |
| Crewman / Lt. Martinez | Michael Braveheart | The Child (TNG) recurring thereafter | Martinez was a male Human Starfleet officer medical assistant serving aboard the USSEnterprise-D and later USSEnterprise-E from 2365 to 2375. As his appearances continued, his rank rose from a crewman grade to lieutenant junior grade. He was a background character, appearing in a total of 84 episodes and two films, but the actor was never credited.[citation needed] |
| Martok | J. G. Hertzler | The Way of the Warrior (DS9) recurring thereafter | Klingon general, commander of Klingon Defence Forces in theBajoran sector, later supreme commander of Klingon forces, Chancellor at the end. Blood-brother ofWorf, husband of Sirella and father of Drex. |
| Masaka | None | Masks (TNG) | A feminine personality and queen associated with Masaka's sun symbol and Masaka's mask. According to a legend recounted by Data asIhat, she chopped up her father and used his bones to make the world. Data assumes the personality of Masaka, puts on Masaka's mask and sits down upon the golden throne in Masaka's temple. Captain Picard poses asKorgano to confront Masaka.[16][8][9][10] |
| Benjamin Maxwell | Bob Gunton | The Wounded (TNG) | One-time captain ofMiles O'Brien aboard the USSRutledge, then captain of the USSPhoenix who attempts an un-authorized mission to exposeCardassian military activity masquerading as scientific research In 2016, the character was ranked as the 94th most important character in service toStarfleet within theStar Trek science fiction universe byWired.[17] |
| Joseph M'Benga | Booker Bradshaw (TOS) Babs Olusanmokun (SNW) | A Private Little War,That Which Survives (TOS) SNW | A doctor aboard the USSEnterprise. The character interned on Vulcan, and is skilled at treating Vulcans. |
| Leonard McCoy | DeForest Kelley Karl Urban | TOS,TAS,TMP,WOK,SFS,TVH,TFF,TUC,Encounter at Farpoint (TNG),ST09,STID,STB | Chief Medical Officer of the USSEnterprise andEnterprise-A under Captain Kirk. |
| Mila | Julianna McCarthy | Improbable Cause,The Dogs of War,What You Leave Behind (DS9) | Enabran Tain's housekeeper and confidant for several decades. Later helps Damar and his resistance cell to hide. |
| Minuet | Carolyn McCormick | 11001001,Future Imperfect (TNG) | Riker's holodeck fantasy woman, created by the Bynars and reproduced by Barash |
| Gary Mitchell | Gary Lockwood | Where No Man Has Gone Before (TOS) | Starfleetlieutenant commander and ship's navigator. He andJames T. Kirk have been friends since he joined the service, and Kirk asked for Mitchell aboard his first command. AtStarfleet Academy, he remembers "Lieutenant" Kirk as being "a stack of books with legs," and that "in his class, you either think or sink." Mitchell also "aimed a little blonde lab technician" at Kirk, who almost married her. Later, on the planet Dimorus, Mitchell almost died from a poisoned dart thrown by "rodent things" who were aiming for Kirk. In 2265 aboard theEnterprise, Mitchell is "zapped" by the Galactic Barrier, which turns his eyes glowing silver and grants him enhanced ESP powers. As he grows stronger, he becomes a danger to the ship and crew, so Kirk is forced to maroon him on the planet Delta Vega. Mitchell doesn't go quietly, however, and Kirk is forced to kill him on the planet's surface. |
| Mogh | None | Sins of the Father (TNG) | Father ofWorf and Kurn. Accused by Duras of betraying the Klingon colony on Khitomer to theRomulans, when the betrayal was committed by Duras' father, Ja'rod. Worf nevertheless accepted discommendation for his father's "crime" to prevent a Klingon civil war. |
| Mora Pol | James Sloyan | The Begotten (DS9), The Alternate (DS9) | Doctor at the Bajoran Center for Science, who was assigned to study theChangeling who would become known asOdo. As such, later functions as an expert on Changelings during the Dominion War. |
| James Moriarty | Daniel Davis | Elementary, Dear Data, Ship in a Bottle (TNG), The Bounty (PIC) | Character created byArthur Conan Doyle, becomes sentient in the holodeck. Later appears as a holographic security projection created by the combinedData/Lore android on Daystrom Station. |
| Morn | Mark Allen Shepherd | Emissary (DS9) recurring thereafter, Birthright, Part 1 (TNG),Caretaker, Part 1 (VOY) | Regular atQuark's bar, known around the station for talking people's ears off, but never seen or heard talking on screen. |
| Morrow | Robert Hooks | SFS | Starfleet admiral who was designated the "Starfleet Commander" in 2285. He boarded theEnterprise for inspection on her return to Spacedock. He awarded Starfleet's highest commendations to the entire crew for their extraordinary service during the battle withKhan. He also promotedScotty to "captain of engineering" and reassigned him to the USSExcelsior NX-2000. In addition, he announced that theEnterprise would be decommissioned, thereby denying Kirk the opportunity to take her back to theGenesis planet. Later, when Kirk pressed the issue and explained that Spock'skatra must be reunited with his body, Morrow cautioned him against "intellectual chaos" and implored him to remain rational, lest he lose everything and destroy himself. (Noncanon: In the movie novelization, Morrow's first name is "Harry".) |
| Harcourt Fenton ("Harry") Mudd | Roger C. Carmel,Rainn Wilson | Mudd's Women,I, Mudd (TOS),Mudd's Passion (TAS),Choose Your Pain,Magic to Make the Sanest Man Go Mad (DSC),The Escape Artist (SHO) | Con-man/rascal first picked up by theEnterprise while trafficking beauty-placebo-infused bought-brides, and later encountered while under the control of a planet of androids. |
Data jerks suddenly -- when he turns back to Picard, he has changed into his Ihat personality.
You're going to pose as Korgano.
Data/Masaka reacts as Picard approaches -- he is wearing the Korgano mask. For the first time, we see a real reaction from Data/Masaka -- she's shocked at the sight.
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