List of Star Trek characters
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This article lists characters in the various canonical incarnations of Star Trek. This includes fictional major characters and fictional minor characters created for Star Trek, fictional characters not originally created for Star Trek, and real-life persons appearing in a fictional manner, such as holodeck recreations.
Main characters
Star Trek: The Original Series
Original crew of the USS Enterprise NCC-1701 as seen on : ''The Cage| Picture | Character | Rank | Actor | Position |
|---|---|---|---|---|
| Christopher Pike | Captain | The Cage:Jeffrey Hunter and later Sean Kenny | Commanding officer |
| Spock | Lieutenant, Junior Science Officer | Leonard Nimoy | Junior Science Officer |
| | Number One | Commander | Majel Barrett | First Officer |
| Julie Margareth Colt | Yeoman | Laurel Goodwin | Yeoman |
| Phillip Boyce | Doctor | John Hoyt | Doctor |
| Jose Tyler | Lieutenant | Peter Duryea | Helmsman |
Regular crew of the USS Enterprise NCC-1701
| Picture | Character | Rank | Actor | Position |
|---|---|---|---|---|
| James T. Kirk | TOS: Captain; ST I-IV: Rear Admiral, Upper Class; ST V-VII: Captain | William Shatner | Commanding Officer (through VI); Chief of Starfleet Operations before I and again before II |
| Spock | TOS, ST I: Commander (called "Lt. Commander" early in series); ST II-VI: Captain | Leonard Nimoy | Executive (First) Officer and Science Officer; Commanding Officer before II; Ambassador in TNG |
| Leonard McCoy | TOS: Lt. Commander; ST I-VI: Commander; TNG: Admiral | DeForest Kelly | Chief Medical Officer |
| "Scotty" Scott | TOS: Lt. Commander; ST I-II: Commander; ST III-VII, TNG: Captain (Commander insignia in IV) | James Doohan | Chief Engineer, Second Officer (through VI) |
| Hikaru Sulu | TOS: Lieutenant; ST I: Lt. Commander; ST II-V: Commander; ST VI, VOY: Captain | George Takei | Helm Officer (originally Astrophysicist); Captain of USS Excelsior in VI |
| Uhura | TOS: Lieutenant; ST I: Lt. Commander; ST II-VI: Commander | Nichelle Nichols | Communications Officer |
--> | Pavel Chekov | TOS: Ensign; SI I: Lieutenant; ST II-VII: Commander | Walter Koenig | Navigator (TOS); Weapons Officer (I); First Officer, USS Reliant (II); Navigator, Weapons Officer, and Chief of Security (III-VI) |
| Christine Chapel | TOS: Enlisted Nurse; ST I, IV: Commander | Majel Barrett | Nurse (TOS); Medical Officer (I); Starfleet Headquarters Emergency Officer (IV) |
| Janice Rand | TOS: Enlisted Yeoman; ST I, (III,) IV: NCO; ST VI, VOY: Commander | Grace Lee Whitney | Yeoman (TOS); Transporter Chief (I); Starfleet Headquarters Staff ([III,] IV) Communications and Executive Officer, USS Excelsior (VI, VOY) |
Star Trek: The Next Generation
Regular crew of the USS Enterprise NCC 1701-D as seen on .| Picture | Character | Rank | Actor | Position |
|---|---|---|---|---|
| Jean-Luc Picard | Captain | Patrick Stewart | Commanding officer |
| William Thomas "Will" Riker | Commander, later Captain | Jonathan Frakes | Executive (first) officer |
| Data | Lt. Commander | Brent Spiner | Second officer, chief operations officer, science officer |
| Geordi La Forge | Lt. Junior Grade (1), Lieutenant (2), Lt. Commander (3-7) | LeVar Burton | Conn Officer and Ops, later Chief Engineer |
| Worf | Lt. Junior Grade (1-2), Lieutenant (3-7), Lt. Commander (Generations), | Michael Dorn | Tactical and Conn officer (season 1) Chief security/tactical officer after Yar's death (seasons 2-7) |
| Doctor Beverly Crusher | Commander | Gates McFadden | Chief medical officer (seasons 1, 3-7; season 2, absent while Chief of Starfleet Medical); bridge officer |
| Doctor Katherine Pulaski | Commander | Diana Muldaur | Chief medical officer (season 2); was not bridge officer |
| Deanna Troi | Lt. Commander (1-7), Commander (7) | Marina Sirtis | Ship's counselor |
| Natasha "Tasha" Yar | Lieutenant | Denise Crosby | Chief of Security (season 1, recurring otherwise) |
| Wesley Crusher | Acting Ensign (1-3), Ensign (3-4), Cadet (Recurring) | Wil Wheaton | Dr. Crusher's son, Conn Officer (seasons 1-4, recurring otherwise) |
Recurring characters
| Actor | Role | Appearances | Pictures |
|---|---|---|---|
| Brian Bonsall | Alexander Rozhenko, Worf's son | Seasons 4–7 | no image available. |
| Patti Yasutake | Nurse Alyssa Ogawa | Seasons 3–7 | no image available. |
| Whoopi Goldberg | Guinan, El Aurian bartender | Seasons 2–6 |
|
| Rosalind Chao | Keiko O'Brien, Miles O'Brien's wife | Seasons 4–6 |
|
| Tony Todd | Kurn, Worf's brother | Seasons 3–7 | no image available. |
| Majel Barrett | Lwaxana Troi, Deanna Troi's mother | Seasons 1–7 |
|
| Voice of the Enterprise computer | |||
| Daniel Davis | Professor Moriarty, a sentient Holodeck character | Seasons 2 and 6 |
|
| John de Lancie | Q, member of the omnipotent Q Continuum | Seasons 1–4 and 6–7 |
|
| Dwight Schultz | Lieutenant Reginald Barclay, engineer | Seasons 3–7 |
|
| Michelle Forbes | Ensign/Lieutenant Ro Laren, a Bajoran | Seasons 5–7 |
|
| Denise Crosby | Sela, a half Romulan, Tasha Yar's daughter | Seasons 4 and 5 | no image available. |
| Eric Menyuk | The Traveler | Seasons 1, 4, and 7 | No image available. |
| Mark Lenard | Ambassador Sarek, a Vulcan, and Spock's father | Seasons 3 and 5 |
|
| Colm Meaney | Miles Edward O'Brien, Navigation and later, Transporter Chief | Seasons 1–7 |
|
Star Trek: Deep Space Nine
Regular crew and civilians of the Federation Station Deep Space Nine as seen on
| Picture | Role | Rank | Performer | Position |
| Benjamin Sisko | Commander, later Captain | Avery Brooks | Commanding officer |
| Worf | Lt. Commander | Michael Dorn | Strategic Operations Officer (seasons 4-7) |
| Jadzia Dax | Lieutenant, later Lt. Commander | Terry Farrell | Science Officer (seasons 1-6) |
| Ezri Dax | Ensign, later Lt. Junior Grade | Nicole deBoer | Station Counselor (season 7) |
| Julian Bashir | Lt. Junior Grade, later Lieutenant | Alexander Siddig | Chief Medical Officer |
|
| Jake Sisko | Civilian | Cirroc Lofton | Civilian reporter/writer |
|
| Miles O'Brien | Senior Chief Petty Officer | Colm Meaney | Chief of Operations |
| Quark | Civilian | Armin Shimerman | Civilian entrepreneur |
| Kira Nerys | Major, later Lt. Colonel (Bajoran Militia); Commander (Starfleet) | Nana Visitor | Executive Officer & Bajoran Liaison Officer |
| Odo | Chief Constable | Rene Auberjonois | Chief of Security |
Recurring characters
| Image | Character | Role | Performer | Appearances |
| Bareil Antos | Bajoran Vedek | Philip Anglim | Seasons 1 through 3 and 6 |
| Brunt | FCA (Ferengi Commerce Authority) liquidator | Jeffrey Combs | Seasons 3 through 7 |
| Damar | Dukat’s aide, later leader of the Cardassian Union and then leader of the Resistance against the Dominion | Casey Biggs | Seasons 4 through 7 |
| Dukat | Cardassian military officer; arch-nemesis of Benjamin Sisko | Marc Alaimo | Seasons 1 through 7 |
| Michael Eddington | Starfleet Security Chief, later Maquis leader | Kenneth Marshall | Seasons 3 through 5 |
| Vic Fontaine | Vegas lounge singer (Hologram) | James Darren | Seasons 6 and |
|
| Elim Garak | Exiled Cardassian tailor; former spy for the Obsidian Order | Andrew Robinson | Seasons 1 through 7 |
| image not available | Gowron | Chancellor of the Klingon Empire | Robert O'Reilly | Seasons 3 through 7 |
| Ishka | Quark and Rom’s mother (aka Moogie) | Andrea Martin Cecily Adams | Season 3 and 4 through 7 |
| Leeta | Dabo girl, and later Rom’s wife | Chase Masterson | Seasons 3 through 7 |
| Martok | Klingon General and later Chancellor | J.G. Hertzler | Seasons 4 through 7 |
| Morn | Barfly (anagram of Norm) | Mark Allen Shepherd | Seasons 1 through 7 |
| Nog | Rom’s son and the first Ferengi in Starfleet - Cadet, later Ensign and then Lieutenant | Aron Eisenberg | Seasons 1 through 7 |
| Keiko O'Brien | Schoolteacher, botanist, wife of Miles O’Brien | Rosalind Chao | Seasons 1 through 7 |
| No image available. | Molly O'Brien | Daughter of Miles and Keiko O’Brien | Hana Hatae | Seasons 1 through 7 |
| Kai Opaka | Kai of Bajor | Camille Saviola | Seasons 1, 2 and 4 |
|
| Rom | Quark’s brother; waiter and engineer | Max Grodénchik | Seasons 1 through 7 |
| William Ross | Admiral, Fleet commander during the Dominion War | Barry Jenner | Seasons 6 and 7 |
| No image available. | Shakaar Edon | Former Leader of a Bajoran Resistance cell, later First Minister of Bajor | Duncan Regehr | Seasons 3 through 5 |
| Joseph Sisko | Father of Benjamin Sisko, grandfather of Jake Sisko | Brock Peters | Seasons 4 through 7 |
| Luther Sloan | Section 31 operative | William Sadler | Seasons 6 and 7 |
| No image available. | Enabran Tain | Former head of the Obsidian Order and Garak’s father | Paul Dooley | Seasons 2, 3 and 5 |
| Lwaxana Troi | Betazoid ambassador | Majel Barrett | Seasons 1, 3 and 4 |
| Weyoun | Vorta leader of the Dominion forces on the Alpha Quadrant | Jeffrey Combs | Seasons 4 through 7 |
| Winn Adami | Bajoran Vedek and later Kai | Louise Fletcher | Seasons 1 through 7 |
| Kasidy Yates | Freighter captain and Sisko’s second wife | Penny Johnson Jerald | Seasons 3 through 7 |
| Grand Nagus of the Ferengi Alliance | Wallace Shawn | Seasons 1 through 7 | |
| Tora Ziyal | Dukat’s illegitimate daughter, Garak’s love interest | Several | Seasons 4 through 6 |
| Female Changeling | Leader of the Dominion | Salome Jens | Seasons 3 through 7 |
Star Trek: Voyager
Regular crew of the USS Voyager NCC-74656 as seen on| Picture | Character | Rank | Actor | Position |
|---|---|---|---|---|
| Kathryn Janeway | Captain | Kate Mulgrew | Commanding Officer |
| Chakotay | Originally Maquis, Lieutenant Commander | Robert Beltran | Executive (First) Officer |
| Tuvok | Lieutenant, then Lieutenant Commander | Tim Russ | Chief Security/Tactical officer |
| B'Elanna Torres | Originally Maquis, Lieutenant Junior Grade | Roxann Dawson | Chief Engineer |
| Tom Paris | Lieutenant Junior Grade, demoted to Ensign, later promoted back to Lieutenant | Robert Duncan McNeill | Chief CONN Officer (Pilot) |
| Harry Kim | Ensign | Garrett Wang | Chief Operations Officer |
| The Doctor | Chief Medical Officer | Robert Picardo | Emergency Medical Hologram, Emergency Command Hologram |
|
| Neelix | Crewman | Ethan Phillips | Voyager's Chef, diplomatic adviser and morale officer, close to the end of the series Neelix becomes Ambassador for Starfleet in the Delta Quadrant. |
|
| Kes | Crewman | Jennifer Lien | Airponics gardener, medical aide/student |
| | Seven of Nine | Crewman | Jeri Ryan | Astrometrics |
Recurring characters
| Image | Actor | Role | Appearances |
|---|---|---|---|
| No image available. | Martha Hackett | Ensign Seska, a Cardassian agent | Seasons 1–3 and 7 |
| No image available. | Alexander Enberg | Ensign Vorik, a Vulcan | Seasons 3–5 and 7 |
| No image available. | Scarlett Pomers | Naomi Wildman, the first child born on Voyager | Seasons 2–7 |
| Tarik Ergin | Lieutenant Ayala | Seasons 1–7 |
| No image available | John Tempoya | Nozawa Kashimuro | Seasons 1–4 and 7 |
| No image available | Nancy Hower | Ensign Samantha Wildman, Naomi's mother | Seasons 2–6 |
| No image available | Josh Clark | Lieutenant Joseph Carey | Seasons 1 and 5–7 |
| No image available | Simon Billig | Lieutenant Hogan | Seasons 2 and 3 |
| No image available | Christine Delgado | Lieutenant Susan Nicoletti | Seasons 1–4 and 7 |
| Dwight Schultz | Lieutenant Reginald Barclay | Seasons 2 and 6–7 |
| No image available | Raphael Sbarge | Ensign Michael Jonas | Season 2 |
| No image available | Tom Virtue | Lieutenant Walter Baxter | Seasons 1–2 and 7 |
| Manu Intiraymi | Icheb, formerly a Borg drone | Season 7 |
| Alice Krige / Susanna Thompson | The Borg Queen | Seasons 5–7 |
| No image available | Marley S. McClean | Mezoti | Seasons 6–7 |
| No image available | Cody Wetherill | Rebi | Seasons 6–7 |
| No image available | Kurt Wetherill | Azan | Seasons 6–7 |
| Brad Dourif | Ensign Lon Suder, convicted of murder | Seasons 2–3 |
| No image available | Brian Markinson | Lieutenant Peter Durst | Season 1 |
| No image available | Zoe McLellan | Crewman Tal Celes | Season 6 |
| John de Lancie | Q, galactic gadfly | Seasons 2–3 and 7 |
| No image available | Martin Rayner | Doctor Chaotica | Seasons 5 and 7 |
| Allan G. Royal / Bruce McGill | Captain Braxton, Starfleet captain from the 29th century | Seasons 3 and 5 |
| No image available | Richard Herd | Admiral Owen Paris, father of Tom Paris | Seasons 2 and 5–7 |
| John Rhys-Davies | Leonardo da Vinci | Seasons 3–4 |
Star Trek: Enterprise
| Picture | Performer | Rank | Character's Name | Position |
|---|---|---|---|---|
| Scott Bakula | Captain | Jonathan Archer | Captain and commanding officer of the Starship Enterprise. |
| Jolene Blalock | Subcommander (Vulcan High Command), later Commander (Starfleet) | T'Pol | Second-in-command and Chief Science Officer; sole Vulcan regular crew member. |
| | Connor Trinneer | Commander | Charles Tucker III | Chief engineer. |
| | Dominic Keating | Lieutenant | Malcolm Reed | Tactical officer. |
| | Linda Park | Ensign | Hoshi Sato | Communications officer. |
| | Anthony Montgomery | Ensign | Travis Mayweather | Helm officer. |
| | John Billingsley | Doctor | Phlox | The ship's Denobulan physician. |
Recurring characters
Other important characters from Star Trek: Enterprise
- Admiral Maxwell Forrest, Archer's superior officer (Vaughn Armstrong), killed during the fourth season in "The Forge", although a Mirror Universe version of the character appeared later in Season 4.
- Captain Erika Hernandez, Captain of the Enterprise's sister ship Columbia and onetime romantic interest of Jonathan Archer.
- Soval, a Vulcan ambassador (Gary Graham) who came down very hard on the Enterprise crew in early seasons, but became a valuable ally, later.
- Silik, a Suliban (John Fleck), killed in "Storm Front, Part II" at the start of the fourth season.
- Crewman Elizabeth Cutler, a young, inexperienced crewmember (Kellie Waymire) who appeared several times during the first season, and was briefly a romantic interest for Phlox. Waymire died in 2003, but her character was mentioned by Dr. Phlox in a later episode.
- Degra, a Xindi-Primate (Randy Oglesby). A recurring character during the third season, murdered in "The Council".
- Major Hayes, leader of the MACO team during the third season, killed in "Countdown" (Steven Culp)
- Shran, member of the Andorian Imperial Guard and an ally of Archer's (Jeffrey Combs).
- Michael Rostov, a member of Tucker's Engineering team who has appeared occasionally (Joseph Will).
- Chef, who heads up Enterprise's kitchen, is mentioned in many episodes spanning all four seasons but is never seen, except in the episode "The Catwalk" in which his is only seen from the waist down. In "These Are The Voyages", Commander Riker (Jonathan Frakes) is advised by Counselor Troi (Marina Sirtis), to take on the role of Chef in his holodeck simulation of Enterprise.
| Picture | Character's name | Actor | Rank | Role |
|---|---|---|---|---|
| Admiral Forrest | Vaughn Armstrong | Vice Admiral | A flag officer of Earth's Starfleet Command in San Francisco in the 22nd century, who directly oversaw Jonathan Archer's missions. Command]]. |
|
| Erika Hernandez | Ada Maris | Captain | Commanding Officer of Columbia (NX-02), sister ship of Enterprise (NX-01) |
Characters from all series, listed alphabetically
Key
Bajoran characters are listed by family name, which is stated first. Joined Trills are listed by the name of the symbiont, which replaces the family name.
A
) |Gail Strickland |rowspan="2"| Paradise (DS9) |- |colspan="2"| Technophobic leader of a colony that settled on planet Orellius in 2360. Alixus was a philosopher and a prolific writer who felt that technology was the undoing of modern society. Her group had originally planned to colonize planet Gemulon V, but a systems malfunction forced their transport ship, the S.S. Santa Maria, to land on Orellius. It was not learned until ten years later that Alixus had planned the forced landing in order to establish a society that conformed to her ideals. Alixus had selected Orellius because it was far from shipping lanes, and even went so far as to create a duonetic field around the colony site, to make it impossible for her followers to use any advanced technology. Although many of her followers seemed happy with this way of life, Alixus was responsible for several deaths because she also rejected any form of technologically-based medicine. After her colony was accidentally discovered in 2370 by Benjamin Sisko and Miles O'Brien, Alixus and her son, Vinod, were taken into custody for having permitted these deaths. |- |rowspan="2"| No pic |Altovar () | |rowspan="2"| Distant Voices (DS9) |- |colspan="2"| Lethean criminal who was caught stealing bio-mimetic gel from the Deep Space Nine infirmary in 2371. Dr. Julian Bashir was attacked by Altovar during the theft. |- |rowspan="2"| No pic |Aluura () | |rowspan="2"| Profit and Lace (DS9) |- |colspan="2"| A beautiful Dabo girl who worked at Quark's in 2374. Quark threatened to fire her if she didn't perform oo-mox. |- |rowspan="2"| No pic |Kiaphet Amman'sor () |None |rowspan="2"| |- |colspan="2"| A female aquatic of the multi-species race Xindi. She is a member of the Ibix dynasty, a wealthy and powerful aquatic family. Kiaphet is also the head aquatic in the Xindi Council. She is always seen in a tank that ajoins the Council chamber.For a long time, Kiaphet and her mate were against building the Xindi weapon. They were convinced when the Sphere Builders showed what they claimed was video footage from the future. It showed mankind destroying the Xindi's new homeworld.
Kiaphet, for the next few years, tried to hold the Council together while convincing it that the weapon was necessary. When Captain Archer confronted the Council to convince them not to launch the weapon, Kiaphet believed that they should take his testimony into account.
|-
|rowspan="2"| No pic
|Anya ()
|Paddi Edwards
|rowspan="2"| The Dauphin (TNG)
|-
|colspan="2"| A shapeshifting allasomorph native to the third moon of Daled IV who served as guardian of the planet's leader, Salia, while she was being transported on the Enterprise-D. To the Enterprise crew, Anya assumed the form of an older human woman; her intrinsic appearance is unknown.
|-
|rowspan="2"| Not seen on screen
|Robert April ()
|None
|rowspan="2"| None
|-
|colspan="2"| First captain of the U.S.S. Enterprise NCC-1701 during its initial five-year mission. April, later a commodore, was succeeded by Captain Christopher Pike.
|-
|rowspan="2"| No pic
|Ardra ()
|
|rowspan="2"| Devil's Due (TNG)
|-
|colspan="2"| According to the theology of Ventax II, Ardra was a mythic being from the distant past who promised the population a thousand years of prosperity, followed by enslavement upon her return at the end of that epoch. In 2367, a female con artist was unmasked by Enterprise-D personnel after deceiving the Ventaxians into believing she was the deity by using technology to mimic various phenomena believed to herald Ardra's return.
|-
|rowspan="2"|
|Armus ()
|None
|rowspan="2"| Skin of Evil (TNG)
|-
|colspan="2"| Sentient oil slick that killed Tasha Yar.
|-
|rowspan="2"| No pic
|Dr. Arridor ()
|Dan Shor
|rowspan="2"| The Price (TNG)
False Profits (VOY)
|-
|colspan="2"| Member of a Ferengi delegation sent to negotiate for the rights to the Barzan wormhole in 2366. Dr. Arridor was responsible for the distillation of a Ferengi pyrocyte which DaiMon Goss used to poison the Federation ambassador, Dr. Mendoza. Dr. Arridor was one of the crew of the Ferengi shuttle sent to investigate the Barzan wormhole; he was lost in the distant Delta Quadrant when one terminus of the wormhole changed location. Arridor and Kol became stranded in the Delta Quadrant when the other terminus of the Barzan wormhole also changed position. The two crash-landed on the Takarian homeworld and assumed the role of the Great Sages from Takarian mythology. In 2373, the U.S.S. Voyager happened upon the planet and forced Arridor and Kol to leave. When they attempted to return to the Takarian planet, their shuttle was pulled into the Barzan wormhole by a gravitational eddy. Their actions knocked the wormhole off of its subspace axis so that both of its endpoints jumped around erratically. The fate of Arridor and the shuttle remains unknown.
|-
|rowspan="2"|
|Jeremy Aster ()
|Gabriel Damon
|rowspan="2"| The Bonding (TNG)
|-
|colspan="2"| Human civilian, orphaned when his mother, Marla Aster, an officer aboard the U.S.S. Enterprise-D was killed in 2366 on an away mission. Aster's father had died five years earlier due to Rushton infection.
A race of non-corporeal beings known as the Koinonians with remarkable abilities were inadvertently responsible for the death of his mother, and sought to recreate facsimiles of Aster's mother and his Earth home.
Initially preferring to accept the false reality, Aster eventually accepted the truth and became an honorary member of Enterprise-D officer Worf's family, through a Klingon bonding ritual known as R'uustai. After the incident, Aster returned to Earth to live with an Aunt and Uncle.
|- |rowspan="2"| No pic |Azetbur () |Rosana DeSoto | |- |colspan="2"| Daughter of Klingon Chancellor Gorkon, Azetbur ascended to the chancellorship herself when her father was assassinated in 2293.
Azetbur accompanied her father on a journey to Earth to initiate peace talks between the Klingon Empire and the Federation. At the invitation of Captain James T. Kirk, she came aboard the U.S.S. Enterprise-A, the escort ship, for a diplomatic dinner along with the rest of the Klingon delegation. During this awkward social occasion, she expressed her dismay that the Federation seemed to be a "Homosapiens-only club," and exposed such rhetoric as "inalienable human rights" as being inherently racist.
Her father was murdered shortly thereafter, and she was named Chancellor of the High Council in his place. Determined to continue Gorkon's initiatives, she carried through with the peace conference, choosing to hold it on the neutral planet of Khitomer, rather than on Earth. But she also refused to extradite Kirk and Dr. McCoy, who were arrested and tried for the murder of Gorkon. Then, she bluntly told the Federation President that any attempt to rescue them would be considered an act of war. This, in spite of her private feelings that war was obsolete.
At the Khitomer conference, Azetbur gave an impassioned speech, lauding her father for being an idealist, and the Klingons for being a proud race who intend to go on being so. She was a potential target for assassination herself, until Kirk and the Enterprise crew exposed the conspiracy responsible for her father's death, a conspiracy involving Klingons, Romulans, and Federation personnel.
In response, Azetbur announced before the conference that Kirk had restored her father's faith.
|}
B
C
D
E
F
G
H
- Annika Hansen, Seven of Nine's designation before assimilation.
- Erin Hansen Wife of Magnus Hansen, mother of Annika Hansen. Studied the Borg up close.
- Magnus Hansen Husband of Erin Hansen, father of Annika Hansen. Studied the Borg up close.
- Lieutenant Harold (TOS, "Arena"), A survivor of the Gorn attack on Cestus III, Harold was found by Kirk and the landing party in the war zone that was once a starbase on the planet. Suffering from severe radiation burns, Harold told Kirk of the events leading up to the attack, specifically how the Gorn ship approached at space-normal speed and surprised the starbase with their attack. Harold also surprised Kirk with the information that neither himself nor the starbase were able to send the message that lured Enterprise to Cestus III -- for the attack occurred a full day before the so-called message was (or could have been) sent.
- Captain John Harriman (TOS), captain of the USS Enterprise-B on its maiden voyage in 2293.
- Stephen Hawking (TNG, "Descent, Part I") Holographic reproduction for a game of poker with Data. Played by the real Stephen Hawking.
- Dixon Hill, played by Jean-Luc Picard on the holodeck
- Sherlock Holmes, character created by Arthur Conan Doyle, played by Data on the holodeck
- Mr. Homn, valet to Lwaxana Troi, mother of Deanna Troi.
- Hugh, 3 of 5
I
- Ilia Joined Willard Decker to merge with V'Ger
- Ishka, mother of Quark
J
- Mark Jameson (TNG, "Too Short a Season") Renowned Federation mediator who tried an unorthodox age-reversal treatment
- Jarlath (VOY, "Displaced") Captive on a habitat customized by the Nyrians. He discovered passages between habitats.
- Captain Edward Jellico (TNG, "Chain of Command"), acting captain of the Enterprise-D while Jean-Luc Picard was engaged in negotiations with the Cardassians.
- Jeffrey (VOY, "Real Life") The Doctor's son in his holographic family program.
- Ma'Bor Jetrel (VOY, "Jetrel") Repented for engineering weapon that killed millions of Talaxians
- Jeyal (DS9, "The Muse") Tavnian, briefly Lwaxana Troi's husband and father of one of her children. When he learned the unborn child was a male, he insisted that upon birth he be separated from his mother and raised only by men in accordance with Tavnian tradition.
- Jono (TNG, "Suddenly Human") Human born Jeremiah Rossa, adopted by Talarian Captain Endar in accordance with Talarian customs. When found by the Enterprise-D, Picard wanted to return him to his biological grandmother, Admiral Conaught Rossa, but Jono, who had then reached the Age of Decision, decided to return to Endar.
K
- Kahless Legendary Klingon warrior and first emperor of the Klingon Empire; a clone created in 2369 was made ceremonial emperor by Gowron
- Kamala (TNG, "The Perfect Mate")
- Kang (TOS, DS9, VOY) Legendary Klingon commander whose exploits ensured 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. The late Dahar Master once faced James Kirk in 2269 but joined him to defeat their true enemy, an energy lifeform living off their shared hatred when trapped aboard a starship as undying fodder. He had also squared off against Capt. Sulu's Excelsior during the tensions of the Khitomer Conference in 2293. Kang had already met Curzon Dax by then on the Klingon Korvat colony, 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, his son, was made his godson and named Dax in his honor. The boy, of course, 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 to 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. He had already bemoaned the passing of the old Klingon ways, and ridiculed Klingon restaurateurs like the one on DS9, played by Michael Ansara
- Walker Keel (TNG, "Conspiracy") Starfleet Commander who warned Picard about alien invasion.
- Edith Keeler (TOS, "City on the Edge of Forever") Edith Keeler, human. In 1930, during the first part of Earth's 20th Century, Keeler was a social worker who died in a street accident. Centuries later, during a survey of the Guardian of Forever by the U.S.S. Enterprise, the ship's Chief Medical Officer, Dr. Leonard McCoy, during a temporary bout of mental illness brought on by an accidental injection of cordrazine, escaped into Earth's past. While there, he saved Keeler from dying, which sparked a chain of events throughout the timeline, essentially changing history. In the altered timeline, Keeler, a passionate believer in peace, spearheaded a movement which delayed the entry of the United States into World War II, thus paving the way for an Axis victory. Ultimately, Starfleet, the Federation and the U.S.S. Enterprise were no longer in existence, 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 trying for Kirk, as he had fallen in love with Keeler, played by Joan Collins
- K'Ehleyr (TNG, "The Emissary"), wife of Worf, mother of Alexander Rozhenko, played by Suzie Plakson
- Captain Keogh (DS9, "The Jem-Hadar"), commander of the ill-fated USS Odyssey
- Lenara Khan (DS9, "Rejoined") Trill woman hosting the Khan symbiont, who in a former life was married to Dax, played by Susanna Thompson
- Kira Meru (DS9, "Wrongs Darker than Death or Night") Mother of Kira Nerys, was a comfort woman for Gul Dukat for seven years.
- Kira Nerys (DS9) Bajoran militia officer assigned as Benjamin Sisko's second in command on Deep Space Nine, played by Nana Visitor
- K'Kath (VOY, "Real Life") Klingon friend of Jeffrey in the holographic family program modified by Torres.
- Klag (TNG, "A Matter of Honor") Second officer of the Klingon bird-of-prey Pagh.
- K'mtar (TNG, "Firstborn") The adult Alexander Rozhenko from a possible future, played by James Sloyan
- Kodos the Executioner aka Anton Karidian (TOS, "The Conscience of the King") Governor of Tarsus IV, who engaged in a large-scale eugenics programme to counter impending threat of starvation to the colony, later assumed the role of an actor leading a traveling Shakespeare company
- Kol (TNG, "The Price"; VOY, "False Profits") 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" in order to exploit the Takarans for profit.
- Anastasia Komononov (DS9, "Our Man Bashir") A Russian spy in Bashir's secret agent program. Due to a transporter malfunction, Komononov's physical parameters were temporarily modelled on Kira.
- Sirma Kolrami (TNG, "Peak Performance") War strategy consultant for war games between the Enterprise-D and the Hathaway
- Kolopak, father of Chakotay
- Koloth
- Kor
- Korenna (VOY, "Remember") Enaran woman in a star-crossed romance with a primitive regressive. She eventually passed on the memories of the genocide of the regressives to B'Elanna Torres.
- Kozak Klingon who accidentally died at Quark's bar. The financial assets of his House were being siphoned off by the Duras family by using Ferengi-like tactics.
- Kurn (TNG, DS9) Son of Mogh, brother of Worf, played by Tony Todd
- Lt. (later Cmdr.) Kyle (TOS, 11 episodes, WOK) human transporter chief, in WOK on USS Reliant
L
- Silva La Forge, mother of Geordi La Forge
- Lal, daughter of Data
- Natima Lang, a Cardassian radical, the love of Quark's life (DS9, "Profit and Loss")
- Larg (VOY, "Real Life") Klingon friend of Jeffrey in the holographic family program modified by Torres.
- Sam Lavelle (TNG, "Lower Decks") Junior officer aboard the Enterprise-D
- Robin Lefler (TNG, "The Game") Ensign (engineering section) and friend of Wesley Crusher
- Janice Lester (TOS, "Turnabout Intruder") Former lover of Kirk's, temporarily swapped bodies with him
- Li Nalas (DS9, "The Homecoming") Bajoran resistance fighter who became a hero of mythological proportions after unwittingly killing a Cardassian
- Linnis (VOY, "Before And After") Daughter of Tom Paris and Kes, mother of Andrew, in an alternate timeline. Played by Jessica Collins.
- Nick Locarno Classmate of Wesley Crusher's at Starfleet Academy. Some fans believe he is the same person as Tom Paris
- Locutus a drone within the Borg Collective made using the body of Captain Picard
- Lore, "evil brother" of Data
- Lori Ciana was a flag officer in Starfleet. She was briefly married to fellow admiral James T. Kirk. While on a trip to the Enterprise to visit him, she was killed in a transporter accident.
- Colonel Lovok Romulan Tal Shiar officer replaced by a changeling in order to lead the Romulans into a Jem'haddar ambush
- Philippa Louvois Starfleet Judge Advocate General
- Lumba (DS9, "Profit and Lace") Quark's alias while a temporary Ferengi female.
- Lursa, one of the Duras sisters
- Lutan
M
- Keiran MacDuff (TNG, "Conundrum") Satarran operative who infiltrated the Enterprise-D after a mass amnesia incident
- Marayna (VOY, "Alter Ego") Operator of a station inside an inversion nebula. When Voyager passed by, she created a human version of herself in Neelix's holographic resort program
- Dr. Kila Marr (TNG, "Silicon Avatar") Dr. Kila Marr is a xenologist dedicated to the study of the Crystalline Entity. After the entity destroyed all life on the Omicron Theta science colony, including her son, in 2338 she became obsessed. When the Enterprise-D encountered the entity in the episode Silicon Avatar in the year 2368 she shattered it with high intensity energy waves.
- Dr. Carol Marcus, inventor of the Genesis Device, mother of Kirk's only known son
- Aamin Marritza (DS9, "Duet") Impersonated Gul Darhe'el to atone for Cardassian war crimes
- Martok
- Martis Mother of Kes, wife of Benaren. Played by Rachel Harris.
- Martus Mazur (DS9, "Rivals") El-Aurian who promoted gambling device that turned out to have strange effects on quantum probability
- Dr. M'Benga (TOS) Assistant to Dr. McCoy
- Marla McGivers Cohabitated with Khan
- Ki Mendrossen (TNG, "Sarek") Assistant to Ambassador Sarek for the Legaran negotiations
- Minuet, Riker's holodeck fantasy woman, created by the Bynars and reproduced by Barash
- Miri (TOS, "Miri")
- Mogh, father of Worf
- Moogie (DS9) Quark and Rom's mother
- Morn, regular to Quark's bar, but never talks
- James Moriarty, character created by Arthur Conan Doyle, becomes sentient in the holodeck
- Crell Moset (VGR, "Nothing Human") Cardassian doctor, cured the Fostossa virus by experimenting on Bajorans. When B'Elanna Torres was invaded by a cytoplasmic lifeform, the Voyager EMH was assisted by a holographic reproduction of Dr. Moset, and the procedure was a success. But because Maquis crewmembers objected to Dr. Moset, the EMH decided to delete the program.
- Mot Barber on Enterprise-D
- Harry Mudd (TOS), aka Harcourt Fenton Mudd
- Father Mulligan Alias used by The Doctor while in Fair Haven as a priest.
N
- Nagilum (TNG, "Where Silence Has Lease")
- Nakahn (VOY, "Darkling") Mikhal Traveller, owner of a lodge
- Neelix Barclay's pet cat, named after Voyager's Talaxian
- Sir Isaac Newton (TNG, "Descent, Part I") Holographic reproduction for a game of poker with Data
- Nidell (DS9, "Second Sight") with possible redirect
- Nilva (DS9, "Profit and Lace") Slug-O-Cola tycoon and commissioner of the Ferengi Commerce Authority.
- Dr. Noah (DS9, "Our Man Bashir") A mad scientist in Bashir's secret agent program. Due to a transporter malfunction, Dr. Noah's physical parameters were temporarily modelled on Sisko.
- Nog, son of Rom, nephew of Quark
- Noggra (DS9, "The Sons of Mogh") Old family friend of Worf who took Kurn into his family.
- Noss (VGR, "Gravity") Woman who survived in Class D planet within sinkhole for several years. Fell in love with Tuvok. Portrayed by Lori Petty.
- N'Vek (TNG, "Face of the Enemy") Romulan subcommander who helped deliver Romulan dissidents to the Enterprise.
O
- Keiko O'Brien, wife of Miles O'Brien
- Miles O'Brien, transporter chief on the Enterprise-D, Chief of Operations at DS9
- Molly O'Brien, daughter of Miles and Keiko O'Brien
- Katie O'Claire Alias used by Kathryn Janeway while in Fair Haven
- Odala (VOY, "Distant Origin") Saurian minister who refuses to believe Professor Gegen's distant origin theory of their race.
- Odan (TNG, "The Host"), a precedent for Trills disregarded on DS9
- Odo (DS9) changling security officer
- Ralph Offenhouse 20th Century human cryogenically frozen and discovered by the Enterprise-D
- Alyssa Ogawa, nurse aboard the Enterprise-D
- Thadiun Okona (TNG, "The Outrageous Okona") Captain of a small freighter
- Omet'iklan (DS9, "To The Death") Jem'haddar First who threatened to kill Sisko after completing a mission to kill renegade Jem'haddar soldiers.
- Onaya (DS9, "The Muse") Vampiric being who feeds on creative energy. She claims to have helped artists all over the quadrant, including Earth's William Butler Yeats.
- Kai Opaka
- Orta (TNG, "Ensign Ro") Bajoran terrorist
P
- Douglas Pabst (DS9, "Far Beyond the Stars"), Editor of a science-fiction magazine in the 1950s, similar to Odo in appearance. Appeared to Sisko in a vision.
- Miral Paris Daughter of Tom Paris and B'Elanna Torres
- Melora Pazlar (DS9, "Melora") Native of a low-gravity planet who served in Starfleet
- Senator Pardek Romulan official agreeable to the idea of reunification with Vulcan
- Perrin Widow of Sarek
- Elise Picard Jean-Luc's wife in the Nexus, in the feature film Star Trek Generations. Played by Kim Braden.
- Maurice Picard (TNG, "Tapestry") Wine grower, father of Jean-Luc Picard.
- René Picard Jean-Luc's nephew
- Robert Picard (TNG, "Family") Jean-Luc's brother
- Walter Pierce
- Christopher Pike, Captain of the Enterprise NCC-1701 before James T. Kirk
- Vedek Porta (DS9, "Accession") Bajoran Vedek who killed a member of his group after he refused to follow his D'Jarra.
- Porthos, Archer's dog
- Prinadora, a Ferengi female. She was the former wife of Rom, and the mother of their son Nog. She took advantage of Rom's love for her and tricked him into signing an extension to their marriage contract; Prinadora's father was subsequently able to swindle Rom out of all his money, whereupon Prinadora left Rom for another man.
- Captain Proton, played by Tom Paris on the holodeck
Q
- Q, various beings from the Q Continuum
- Qatai (VGR, "Bliss") Man who hunted large, spacefaring bioplasmic lifeform for at least 40 years.
- Dr. Dalen Quaice (TNG, Remember Me) Old colleague of Dr. Crusher's
- Quark, Ferengi. Son of Keldar.
- Rear Admiral Gregory Quinn, infested by alien parasite conspiring against humanity
R
- Rakal (TNG, "Face of the Enemy") Romulan Tal Shiar officer. She was killed by dissidents who then drafted Troi to impersonate her.
- Ramirez (DS9, "To the Death") a random security officer from Defiant. Killed on the gateway planet by jem'hadar in the first fight.
- Berlinghoff Rasmussen (TNG, "A Matter of Time") Con artist who travelled forward in time with the intention of stealing technology from the future and then patenting it in his own time
- Claire Raymonds 20th Century human cryogenically frozen and discovered by the Enterprise-D
- Cyrus Redblock Fictional 1940s crime boss, from Picard's "Dixon Hill" holodeck adventures
- Dexter Remmick, infested by alien parasite conspiring against humanity
- Captain Paul Rice, warned Picard of a conspiracy at Starfleet Headquarters
- Kyle Riker (TNG, "The Icarus Factor"), civilian strategist, father of William Riker
- Thomas Riker, transporter clone of William Riker
- Rislan (VOY, "Displaced") Nyrian scientist pretending to help Torres with the unexplained transports switching the Voyager crew with Nyrians.
- Riva (TNG, "Loud as a Whisper")
- Captain Rixx (TNG, "Conspiracy") Captain of USS Thomas Paine, helped warn Picard about alien invasion.
- Ro Laren Served in Starfleet, later joined the Maquis
- Rain Robinson (VOY, "Future's End", Parts I & II) Young woman working for SETI
- Rodek (DS9, "The Sons of Mogh") Son of Noggra. Identity given to Kurn after Worf failed to fulfill Kurn's request for ritual murder.
- Amanda Rogers (TNG, "True Q") Raised as a human but actually a member of the Q Continuum
- Rom, brother of Quark
- Ronin (TNG, "Sub Rosa")
- Admiral Conaught Rossa Biological grandmother of Jeremiah Rossa.
- Jeremiah Rossa See Jono.
- Jackson Roy Kirk (TOS, "The Changeling"), 21st Century robotics engineer who built the space probe known as Nomad which was launched from Earth to explore the galaxy.
- Alexander Rozhenko, son of Worf
- Helen Rozhenko, adopted mother of Worf
- Nikolai Rozhenko (TNG, "Homeward Bound"), Worf's human adopted brother
- Sergey Rozhenoko, adopted father of Worf
- Benny Russell (DS9, "Far Beyond the Stars"), African-American science-fiction writer in the 1950s. The magazine he worked for refused to publish one of his stories featuring "a Negro captain". Appeared to Sisko in a vision.
S
- Saavik (Star Trek II; Star Trek III; Star Trek IV) Half-Vulcan, half-Romulan Starfleet officer, played first by Kirstie Alley, later by Robin Curtis
- Sakkath (TNG, "Sarek") assistant to Sarek during the Legaran negotiations
- Sarek Famed Vulcan ambassador and father of Spock, played by Mark Lenard
- Sarjenka (TNG, "Pen Pals") Native of a seismically active planet who was helped by Data, played by Nikki Cox
- Admiral Norah Satie (TNG, "The Drumhead") Legendary Starfleet admiral who headed a paranoia-fueled investigation aboard Enterprise-D, played by Jean Simmons
- Tryla Scott (TNG, "Conspiracy") Youngest Captain in Starfleet history, helped warn Picard of alien invasion
- Sela (TNG) Daughter of Tasha Yar and a Romulan officer
- Dr. Selar (TNG, "The Schizoid Man") Vulcan medical officer on Enterprise-D, played by Suzie Plakson
- Subcommander Selok (TNG, "Data's Day") with possible redirect or disambiguation from T'Pel
- Gideon Seyetik (DS9, "Second Sight") Arrogant terraformer, played by Richard Kiley
- Shakaar Edon (DS9) Former leader of Bajoran resistance during Cardassian occupation, later First Minister of Bajor, played by Duncan Regehr
- Shinzon (Star Trek: Nemesis) An imperfect clone of Picard who attempted to seize control of the Romulan Empire, played by Tom Hardy
- Jaglom Shrek (TNG, "Birthright, Part I") Yridian with information to sell about Klingons captured by Romulans at Khitomer.
- Khan Noonien Singh (TOS, "Space Seed"; Star Trek II) Genetically enhanced superman from the late 1990's who attempted to seize control of the Enterprise and later took revenge on Admiral Kirk, played by Ricardo Montalban
- Benjamin Sisko Station commander of DS9 and Emissary to the Prophets, played by Avery Brooks
- Jake Sisko (DS9) Son of Benjamin and Jennifer Sisko, played by Cirroc Lofton
- Jennifer Sisko (DS9) Wife of Benjamin Sisko, killed at Wolf 359, but survived in mirror universe, played by Felecia M. Bell
- Joseph Sisko (DS9) New Orleans restaurateur and father of Benjamin Sisko, played by Brock Peters
- Korenna Sisko (DS9, "The Visitor") Bajoran wife of Jake Sisko in an alternate future, played by Galyn Görg
- Sito Jaxa (TNG, "Lower Decks") Bajoran junior officer aboard the Enterprise-D, played by Shannon Fill
- Luther Sloan (DS9) Section 31 operative who attempted to recruit Bashir numerous times, played by William Sadler
- Lily Sloane (FCT) Twenty-first century human female who was treated for radiation poisoning on the Enterprise, and later befriended Captain Picard
- Sonak (The Motion Picture) Potential replacement for Mr. Spock, died in a transporter accident.
- Arik Soong (ENT, "Borderland") Criminal creator of genetically engineered humans, ancestor of Noonien Soong, played by Brent Spiner
- Noonien Soong (TNG) Human cyberneticist who created Data, played by Brent Spiner
- Tolian Soran (Star Trek: Generations) El-Aurian scientist desperate to return to the Nexus, played by Malcolm McDowell
- Sovak (TNG, "Captain's Holiday") Ferengi who sought to profit from an archeaological search for the Tox Uthat, played by Max Grodénchik
- Spot Data's pet cat
- Henry Starling (VOY, "Future's End", Parts I & II) 20th century pothead turned entrepreneur after discovering a 29th century spacecraft crash-landed near his campsite, played by Ed Begley, Jr.
- Stonn (TOS, "Amok Time") Vulcan, T'Pring's lover
- Dr. Paul Stubbs (TNG, "Evolution") Astrophysicist played by Ken Jenkins, who now plays Dr. Kelso on Scrubs
- Lon Suder (VOY) Bajoran Maquis psychopath who helped retake Voyager after it was commandeered by the Kazon, played by Brad Dourif
- Michael Sullivan (VOY) Holographic character in Tom Paris's Fair Haven, owner of a pub in a quaint Irish village. He became romantically involved with Captain Janeway, who made several modifications to his program, until she told the computer to not allow her to make any more modifications.
- Demora Sulu (Star Trek: Generations) Hikaru Sulu's daughter, served aboard the Enterprise-B, played by Jacqueline Kim
- Surak (TOS, "The Savage Curtain") Legendary Vulcan who led his people to a logical lifestyle
- Sutok (VOY, "Fair Trade") Drug addict who buys his drugs at the Nekrit Supply Depot
- Sybok (Star Trek V) Spock's half-brother, played by Laurence Luckinbill
- Syrran (ENT, "The Forge"), the founder of a Vulcan splinter group following the teachings of the philosopher Surak
T
- Enabran Tain (DS9), Cardassian master spy, father of Garak, and head of the Obsidian Order. Played by Paul Dooley.
- Juliana Tainer (TNG, "Inheritance"), widow of Noonien Soong, "mother" of Data.
- Tal Celes (VOY, "The Haunting of Deck Twelve", "Good Shepherd") Crewman considered inefficient by Seven. Played by Zoe McLellan, better known as Petty Officer Coates on JAG
- Taleen (VOY, "Displaced") Nyrian who explained a new customized habitat to the Voyager crew, as part of the Nyrian's forced relocation scam.
- Taurik (TNG, "Lower Decks") Junior officer aboard the Enterprise-D
- Captain Clark Terrell, captain of the USS Reliant
- Tieran (VOY, "Warlord") Ilaran tyrant ("autarch") who cheated death by transferring his consciousness to other bodies
- Janel Tigan (DS9, "Prodigal Daughter") Brother of Ezri Dax
- Norvo Tigan (DS9, "Prodigal Daughter") Brother of Ezri Dax
- Yanas Tigan (DS9, "Prodigal Daughter") Mother of Ezri Dax
- Timicin (TNG, "Half a Life") Astrophysicist whose culture tradionally kills people at a certain age
- T'Lar
- DaiMon Tog (TNG, "Menage a Troi") Ferengi captain of the Krayton who kidnapped Lwaxana Troi hoping to use her telepathic abilities for profit
- Toman'torax (DS9, "To The Death") Jem'haddar Second to Omet'iklan, executed by his First after fighting with Worf.
- Tora Ziyal, half-Bajoran daughter of Gul Dukat
- Toreth (TNG, "Face of the Enemy") Romulan commander of a warbird, unwittingly helped dissidents defect.
- Tosin (VOY, "Fair Trade") Bandit scamming people trading at the Nekrit Supply Depot
- T'Pan
- T'Pau (TOS, "Amok Time"; ENT, "The Awakening" and "Kir'Shara") Vulcan Official, the only person ever to turn down a seat on the Federation council. Leads a rebellion against the Vulcan High Command in the 22nd Century, and a century later officiates at Spock's "marriage or challenge" ceremony.
- T'Pring (TOS, "Amok Time") Unfaithful Vulcan girl who was betrothed to Spock by their parents when they were 7 years old.
- The Traveler (TNG, "Where No Man Has Gone Before", "Remember Me", "Bloodlines"), Humanoid from Tau Alpha C with exceptional mental abilities, including mastery over time and space.
- Trelane (TOS, "The Squire of Gothos")
- Trevean (DS9, "The Quickening") Teplan equivalent to Jack Kevorkian, assisted the suicide of many Teplans afflicted by the blight.
- Ian Andrew Troi (TNG, "The Child"), son of Deanna Troi and space-dwelling lifeform.
- Ian Andrew Troi, father of Deanna Troi
- Kestra Troi sister of Deanna Troi
- Lwaxana Troi, Daughter of the Fifth House, Holder of the Sacred Chalice of Rixx, Heir to the Holy Rings of Betazed (TNG/DS9, various episodes), Betazed mother of Deanna Troi.
- Tuvix (VOY, "Tuvix"), individual created in a transporter accident that merged Tuvok and Neelix.
- Mark Twain (TNG, "Time's Arrow")
U
- Aquiel Uhnari (TNG, "Aquiel") Comm tech at Relay Station 47.
- Kevin Uxbridge (TNG, "The Survivors") Powerful being repentant for genocide
- Rishon Uxbridge (TNG, "The Survivors") Wife of Kevin Uxbridge
V
- Vadosia (DSN, "The Forsaken"), Bolian ambassador sent to Deep Space Nine to investigate the Bajoran wormhole in 2369.
- Varria (TNG, "The Most Toys") Assistant to Kivas Fajo for 14 years. Helping Data escape from Fajo's ship led to her death.
- Vash, an archaeologist, falls in love with Picard. She first appeared in the ' episode "Captain's Holiday", in which Jean-Luc Picard went to vacation on Risa. She had discovered the Tox Uthat, and thieves were determined to take it from her, but with Picard's help, that was avoided. During this adventure, she and Picard fell in love. They met up again in the episode "QPid", in which Vash was annoyed to find that none of Picard's senior staff had even heard of her, him explaining that "he's a very private man". Q abducted Vash and the Enterprise senior staff, casting them into a Robin Hood scenario, with Picard as Robin Hood and Vash as Maid Marian. After that, Vash went with Q to the Gamma Quadrant to scour archeological sites there. She appeared in the ' episode "Q-Less", in which she had mistaken an "egg" for an artifact which then hatched at the end of the episode as a lifeform.
- Veer (VOY, "Distant Origin") Assistant to Professor Gegen.
- Jason Vigo (TNG, "Bloodlines"). Bok, a Ferengi, altered Vigo's DNA to appear as if he was the son of Enterprise Captain Jean-Luc Picard. Vigo was used as bait by Bok so Bok could avenge his son's death (his son was killed by Picard).
- Miranda Vigo Mother of Jason Vigo
- Vorik Vulcan engineer aboard Voyager
W
X
Y
Z
See also
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