List of Star Trek characters (N–S)

This article lists characters of Star Trek in their various canonical incarnations. 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.

Characters from all series, listed alphabetically

Key

Abbreviation	Title	Medium
TOS	Star Trek: The Original Series (1966–69)	TV
TAS	Star Trek: The Animated Series (1973–74)	TV
TNG	Star Trek: The Next Generation (1987–94)	TV
DS9	Star Trek: Deep Space Nine (1993–99)	TV
VOY	Star Trek: Voyager (1995–2001)	TV
ENT	Star Trek: Enterprise (2001–05)	TV
TMP	Star Trek: The Motion Picture (1979)	film
WOK	Star Trek II: The Wrath of Khan (1982)	film
SFS	Star Trek III: The Search for Spock (1984)	film
TVH	Star Trek IV: The Voyage Home (1986)	film
TFF	Star Trek V: The Final Frontier (1989)	film
TUC	Star Trek VI: The Undiscovered Country (1991)	film
GEN	Star Trek Generations (1994)	film
FCT	Star Trek: First Contact (1996)	film
INS	Star Trek: Insurrection (1998)	film
NEM	Star Trek: Nemesis (2002)	film
ST	Star Trek (2009)	film
ID	Star Trek Into Darkness (2013)	film
BEY	Star Trek Beyond (2016)	film

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.

N

Character	Actor	Episodes
Description
Nagilum	Earl Boen	Where Silence Has Lease (TNG)
Powerful extra-dimensional creature, fascinated by the concept of death, which it studied by starting to kill off the crew of the Enterprise-D. The character of Nagilum was originally named "Nagillum", after actor Richard Mulligan, whom TNG Co-Executive Producer Maurice Hurley originally wanted cast in the role. "Nagillum" is "Mulligan" spelled backward.
Nakahn	Stephen Davies	Darkling (VOY)
Mikhal Traveler, owner of a lodge
Nakamura	Clyde Kusatsu	The Measure of a Man (TNG) recurring thereafter
A Starfleet admiral
Nanclus	Darryl Henriques	TUC
Romulan ambassador to the Federation in 2293. He doesn't know what to believe after Kirk and McCoy are arrested for killing Klingon Chancellor Gorkon. However, when Starfleet Colonel West proposes "Operation Retrieve" to extract Kirk and McCoy, Nanclus believes "there may never be a better time." Later, Lieutenant Valeris implicates him in the conspiracy to assassinate Gorkon.
Alynna Nechayev	Natalija Nogulich	Chain of Command, Part I (TNG) recurring thereafter The Maquis, Part II (DS9) recurring thereafter
Starfleet admiral whose jurisdictional authority included the Federation/Cardassian DMZ. She had a fondness for Bularian canapés.
Neela	Robin Christopher	Duet (DS9), In the Hands of the Prophets (DS9)
Bajoran engineer aboard Deep Space Nine who secretly worked for then-Vedek Winn.
Neelix	Ethan Phillips	VOY
Talaxian who joined the crew of the USS Voyager after being enticed with a promise of abundant water.
Nero	Eric Bana	ST
Romulan miner originating from the late 24th century, captain of the mining vessel Narada. Following the destruction of Romulus, Nero sought vengeance against those whom he held responsible, accidentally being transported to the 23rd century and creating an alternate reality. Nero is presumed killed when the Narada is consumed by a gravitational singularity. Bana "wasn't a huge Trekkie when he was a kid", and had not seen the previous films. Screenwriters Alex Kurtzman and Roberto Orci named Nero after the Roman emperor Nero.
Nevala	Valerie Wildman	Message in a Bottle (VOY)
Romulan officer who assisted Commander Rekar in hijacking the USS Prometheus NX-59650, an experimental prototype Federation starship. She suggested "dissecting" the Doctor via a complete algorithm extraction before being felled by neurozine gas released by the Prometheus' EMH Mark II.
Isaac Newton	John Neville Peter Dennis	Descent, Part 1 (TNG), Death Wish (VOY)
Famous Earth physicist, recreated in the holodeck for a game of poker with Data. Also summoned by "Q" to the USS Voyager to testify at Quinn's asylum hearing.
Nidell	Salli Richardson-Whitfield	Second Sight (DS9)
Halanan female, wife of terraformer Gideon Seyetik. By "psychoprojective telepathy", she created an alter ego, Fenna, who fell in love with Benjamin Sisko.
Nilva	Henry Gibson	Profit and Lace (DS9)
Slug-O-Cola tycoon and commissioner of the Ferengi Commerce Authority
Dr. Noah	Avery Brooks	Our Man Bashir (DS9)
A mad scientist in Bashir's secret agent program. Due to a transporter malfunction, Dr. Noah's physical parameters were temporarily modelled on Sisko
Helen Noel	Marianna Hill	Dagger of the Mind (TOS)
An officer in the medical department of Kirk's Enterprise with specialities in psychiatry and penology who accompanies her captain to inspect the Tantalus V rehabilitation colony.
Nog	Aron Eisenberg	Emissary (DS9) recurring thereafter
Son of Rom, nephew of Quark
Noggra	Robert DoQui	Sons of Mogh (DS9)
Old family friend of Worf who took Kurn into his family
Nogura	None	TMP, books
Starfleet admiral with whom Kirk meets briefly at headquarters before assuming command of the Enterprise to deal with the V'ger crisis. In fan literature of the Star Trek Expanded Universe, Fleet Admiral Nogura is said to be an old friend of the Kirk family who served with James Kirk's father. Nogura's given name is "Heihachiro" in the novelization of Star Trek: The Motion Picture, authored by Gene Roddenberry, and the novels Enterprise, detailing the first days of Kirk's command, and The Lost Years, showing the end of the five-year mission. Also in the movie novelization, Nogura is identified as the "Commanding Admiral" of Starfleet.
Nomad	Vic Perrin (voice)	The Changeling (TOS)
Hybrid of an Earth space probe and an alien probe whose separate peaceful functions became blurred into a directive to sterilize imperfection
Norman	Richard Tatro	I, Mudd (TOS)
A "male" android who infiltrates the Enterprise as a crewmember then hijacks the ship, taking it to a planet ruled by Harcourt Fenton Mudd
Noss	Lori Petty	Gravity (VOY)
Woman who survived in Class D planet for several years. Fell in love with Tuvok.
N'Vek	Scott MacDonald	Face of the Enemy (TNG)
Romulan subcommander of the IRW Khazara and a member of Ambassador Spock's underground/dissident movement on Romulus. He coordinated the smuggling of Vice Proconsul M'ret and his two top aides to the Federation.

O

Character	Actor	Episodes
Description
Keiko Ishikawa O'Brien	Rosalind Chao	Data's Day (TNG) recurring thereafter, A Man Alone (DS9) recurring thereafter
Botanist; wife of Miles O'Brien; school teacher on Deep Space Nine
Kirayoshi O'Brien	Clara Bravo	The Begotten (DS9) recurring thereafter
Son of Miles and Keiko O'Brien, and was carried to term by Kira Nerys after Keiko was critically injured during her pregnancy (a plotline developed to explain actress Nana Visitor's real-life pregnancy)
Miles Edward O'Brien	Colm Meaney	Encounter at Farpoint (TNG) recurring thereafter, DS9
Transporter chief on the Enterprise-D, Chief of Operations at DS9
Molly O'Brien	Hana Hatae Michelle Krusiec	Disaster (TNG) recurring thereafter, A Man Alone (DS9) recurring thereafter
Daughter of Miles and Keiko O'Brien. (Teenaged Molly played by Michelle Krusiec in "Time's Orphan" (DS9).)
Katie O'Claire	Kate Mulgrew	Far Haven (VOY) recurring thereafter
Alias used by Kathryn Janeway while in Fair Haven
Odala	Concetta Tomei	Distant Origin (VOY)
Saurian minister who refuses to believe Professor Gegen's distant origin theory of their race
Odan	Franc Luz	The Host (TNG)
a precedent for Trills disregarded on DS9
Odo	René Auberjonois	DS9
Deep Space Nine's Changeling Security Officer
Odona	Sharon Acker	The Mark of Gideon (TOS)
Daughter of Ambassador Hodin of the planet Gideon, carrier of the disease Vegan choriomeningitis
Ralph Offenhouse	Peter Mark Richman	The Neutral Zone (TNG)
20th-century human cryogenically frozen and discovered by the Enterprise-D
Alyssa Ogawa	Patti Yasutake	Future Imperfect (TNG) recurring thereafter, GEN
Nurse aboard the Enterprise-D and -E, doctor in an alternate timeline.
Thadiun Okona	William O. Campbell	The Outrageous Okona (TNG)
Captain of a small freighter
Omet'iklan	Clarence Williams III	To the Death (DS9)
Jem'haddar First who threatened to kill Sisko after completing a mission to kill renegade Jem'haddar soldiers
Onaya	Meg Foster	The Muse (DS9)
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	Camille Saviola	Emissary (DS9) recurring thereafter
Kai (spiritual leader) of Bajor through the latter years of the Cardassian occupation
Orta	Jeffrey Hayenga	Ensign Ro (TNG)
Bajoran terrorist framed by the Cardassians for an attack against a Federation colony.

P

Character	Actor	Episodes
Description
Douglas Pabst	René Auberjonois	Far Beyond the Stars (DS9)
Editor of a 1950s-era science fiction magazine in a vision experienced by Benjamin Sisko
Pardek	Malachi Throne	Unification (TNG)
Romulan senator who, by 2367, had served the Krocton Segment on Romulus for nine decades. He first met Captain Spock at the Khitomer Conference in 2293. In 2367, when Ambassador Spock contacts him about the possibility of Vulcan-Romulan reunification, he appears agreeable to the idea and invites Spock to Romulus. However, Pardek has fallen out of favor in the Romulan political arena, and seeking a way back into Proconsul Neral's good graces, betrays Spock and the entire Romulan Underground movement to Commander Sela.
Parem	Brian Cousins	The Next Phase (TNG)
Romulan officer who, like Geordi La Forge and Ro Laren, was rendered invisible and "out of phase" by chroniton particles from an experimental Romulan interphase generator gone amok. When Parem overhears La Forge and Ro planning to reverse the effects, he follows them onto the Enterprise-D and captures Ro at disruptor-point. La Forge surprises him with a body slam that sends him through the bulkhead and careening into outer space ... forever.
Miral Paris	Lisa LoCicero	Prophecy, Endgame (VOY)
Daughter of Tom Paris and B'Elanna Torres, named after B'Elanna's mother Miral
Owen Paris	Warren Munson Richard Herd	Persistence of Vision (VOY) recurring thereafter
Father of Tom Paris. Captain of the USS Al-Batani on which Kathryn Janeway served. Promoted to Starfleet Vice Admiral, He served as an instructor at Starfleet Academy, and later oversaw Project Pathfinder to make contact with Voyager in the Delta Quadrant.
Thomas Eugene Paris	Robert Duncan McNeill	VOY
Helmsman of USS Voyager
Patahk	Steve Rankin	The Enemy (TNG)
Romulan officer and one of two survivors of the crash of the Pi, a small Romulan ship, on the surface of Galorndon Core. He's rescued by an Enterprise-D away team and transported to Sickbay. Dr. Beverly Crusher diagnoses him with cell damage to vital areas, necessitating a transfusion of compatible ribosomes for him to recover. Worf is the only crew member who can make such a donation, but he refuses. In turn, Patahk says he would rather die than "pollute his body with Klingon filth." He succumbs soon afterward.
John Frederick Paxton	Peter Weller	Demons (ENT), Terra Prime (ENT)
Leader of the Terra Prime movement
Melora Pazlar	Daphne Ashbrook	Melora (DS9)
Melora Pazlar is a female Elaysian, a species from a planet where gravity is weaker than on most other planets. As of stardate 47229.1, she was an ensign in Starfleet, and a cartographer. Pazlar came to the station before a mapping mission to the Gamma Quadrant. Because the gravity on DS9 was too strong for her, she had to rely on either a wheelchair, or an exoskeletal network of flexible metal beams worn over her body to help her move around the station. Doctor Julian Bashir devised a treatment to help her walk like the other humanoids on the station. Pazlar started the treatment, but when she realized that she wouldn't be able to enjoy low-gravity environments any more, she decided to discontinue the process. The character was originally developed to be the regular science officer on the series. However, logistics made it difficult to use the effects required on a regular basis, and the character was used as a guest appearance instead.
Penk	Jeffrey Combs	Tsunkatse (VOY)
Leader of the fictional fight-to-the-death game Tsunkatse, where he captained a ship that broadcast a holographic fight to various worlds in the Delta Quadrant.
Perrin	Joanna Miles	Sarek (TNG), Unification (TNG)
Widow of Sarek
Elise Picard	Kim Braden	GEN
Jean-Luc's wife in the Nexus
Jean-Luc Picard	Patrick Stewart David Tristan Birkin Marcus Nash	TNG, Emissary (DS9), GEN, FCT, INS, NEM
Captain of the USS Enterprise-D, previously of the USS Stargazer and subsequently of the Enterprise-E
Marie Picard	Samantha Eggar	Family (TNG)
Wife of Robert Picard, mother of René Picard, sister-in-law of Jean-Luc Picard
Maurice Picard	Clive Church	Tapestry (TNG)
Winemaker, father of Jean-Luc Picard
René Picard	David Tristan Birkin Christopher James Miller	Family (TNG), GEN
Jean-Luc's nephew
Robert Picard	Jeremy Kemp	Family (TNG)
Jean-Luc's brother
Yvette Picard	Herta Ware	Where No One Has Gone Before (TNG)
Mother of Jean-Luc Picard
Walter Pierce	Mark Rolston	Eye of the Beholder (TNG)
Starfleet engineer on the Enterprise-D. Part Betazoid, he left empathic traces in the ship's structure on his death in 2363.
Christopher Pike	Jeffrey Hunter Sean Kenney Bruce Greenwood	The Cage (TOS), The Menagerie (TOS), Star Trek: Early Voyages, ST, ID
Captain of the Enterprise NCC-1701 before James T. Kirk. Little is known about Pike's personal life. According to dialog in "The Cage", Pike is from the city of Mojave in North America on Earth in Southern California, and at one point owned a horse named "Tango." Pike is the first captain of the Enterprise to be recognized in Star Trek canon appearing first in the pilot episode "The Cage", played by Jeffrey Hunter. The character does not reappear until "The Menagerie" where the character (disfigured and in a life support unit) is played by another actor. The character is referenced in the TOS episode "Mirror, Mirror", where it is revealed that James Kirk assassinated him to take his command. The Marvel Comics series Star Trek: Early Voyages chronicled the adventures of the Enterprise under the command of Pike. The earliest issues lead up to the events seen in "The Cage", which was retold from Yeoman Colt's point of view.
Mark Piper	Paul Fix	Where No Man Has Gone Before (TOS)
Chief medical officer of the USS Enterprise NCC-1701 in 2265, before Leonard McCoy.
Vedek Porta	Robert Symonds	Accession (DS9)
Bajoran Vedek who killed a member of his group after he refused to follow his D'Jarra
Porthos		Broken Bow (ENT) recurring thereafter
Captain Archer's dog
Erik Pressman	Terry O'Quinn	The Pegasus (TNG)
Starfleet rear admiral in 2370 who was attached to Starfleet Intelligence. He joined the Enterprise-D as mission commander to search for the USS Pegasus NCC-53847, an experimental prototype starship he commanded that was lost 12 years prior. He was William Riker's first commanding officer.
Prinadora	None	Doctor Bashir, I Presume? (DS9)
Ferengi female. She was the former wife of Rom, and the mother of their son Nog. Due to Rom's love for her, he signed an extension to their marriage contract (without reading the fine print); Prinadora's father was subsequently able to swindle Rom out of all his money, whereupon Prinadora left Rom for a richer man.
Captain Proton	Robert Duncan McNeill	Night (VOY) recurring thereafter
Lead character in the holodeck program The Adventures of Captain Proton, played by Tom Paris, Harry Kim and other crew members.
Katherine Pulaski	Diana Muldaur	The Child (TNG) recurring thereafter
Starfleet commander and chief medical officer of the Enterprise-D in 2365.

Q

Character	Actor	Episodes
Description
Q	John de Lancie	Encounter at Farpoint (TNG) recurring thereafter; Q-Less (DS9); Death Wish (VOY) recurring thereafter
All beings who are actively part of the Q Continuum are referred to as "Q" and do not have individual names (see also Amanda Rogers); but the Q played by John de Lancie is the one who appeared repeatedly.
Q	Corbin Bernsen	Déjà Q (TNG)
Q (Corbin Bernsen) visits from the Q Continuum after Q (John de Lancie) is expelled and made human as a punishment, and decides it is time to end the punishment.
Q	Suzie Plakson	The Q and the Grey (VOY)
Q (Suzie Plakson) is an old friend of Q (John de Lancie), who fights him in a civil war within the Q continuum. The war is ended when the two of them agree to have a child together.
Q	Harve Presnell	The Q and the Grey (VOY)
Q (Harve Presnell) is a colonel in the civil war against Q (John de Lancie).
Q	Keegan de Lancie	Q2 (VOY)
Keegan de Lancie (John de Lancie's actual son) plays his Q son who was conceived in The Q and the Grey.
Q or Quinn	Gerrit Graham	Death Wish (VOY)
Gerrit Graham plays a Q who wishes to leave the continuum and become a human so that he can commit suicide. As a human he takes the name Quinn.
Qatai	W. Morgan Sheppard	Bliss (VOY)
Man who hunted a large, spacefaring bioplasmic lifeform for at least 40 years
Dr. Dalen Quaice	Bill Erwin	Remember Me (TNG)
Old colleague of Dr. Beverly Crusher
Quark	Armin Shimerman	DS9
A Ferengi, Quark owned a bar on the Promenade of Deep Space Nine
Gregory Quinn	Ward Costello	Coming of Age (TNG), Conspiracy (TNG)
A Starfleet admiral and friend of Jean-Luc Picard who tested him for possibly being subverted by some unknown before asking him to become Commandant of Starfleet Academy. Quinn was, himself, later infested by an alien parasite conspiring against the Federation.

R

Character	Actor	Episodes
Description
Rakal	Marina Sirtis	Face of the Enemy (TNG)
Romulan major and Tal Shiar operative. She was killed by dissidents in the Romulan Underground, who then abducted Deanna Troi from a neuropsychology seminar on Borka VI to impersonate Rakal and complete a mission of critical importance.
Devinoni Ral	Matt McCoy	The Price (TNG)
Human/Betazoid negotiator vying for control of the Barzan Wormhole, and temporary love interest of Deanna Troi.
Ramirez	Scott Leva	To the Death (DS9)
Security officer from Defiant. Killed on the Gateway planet by Jem'Hadar in the first fight.
Ramos	Dennis Madalone	Heart of Glory (TNG)
Human Starfleet security noncommissioned officer on the Enterprise-D in 2364 who was shot by a makeshift Klingon phaser when Korris and Konmel effected their escape from the Security 3 brig.
Ranar	None	The Pegasus (TNG)
Female admiral and chief of Starfleet Security in 2370. (Note: William Riker pronounced her name "Rayner", but The Star Trek Encyclopedia and the DVD's closed-captioning spelled it "Ranar.")
Rudy Ransom	John Savage	Equinox (VOY)
Captain of the Federaton starship USS Equinox, stranded in the Delta Quadrant
Redjac	None	Wolf in the Fold (TOS)
Non-corporeal alien drawing sustanance from the emotion of fear, capable of inhabiting corporeal beings and taking over control of their bodies
Berlinghoff Rasmussen	Matt Frewer	A Matter of Time (TNG)
Con artist who travelled forward in time with the intention of stealing technology from the future and then patenting it in his own time
Clare Raymonds	Gracie Harrison	The Neutral Zone (TNG)
20th Century human cryogenically frozen and discovered by the Enterprise-D
Cyrus Redblock	Lawrence Tierney	The Big Goodbye (TNG)
Fictional 1940s crime boss, from Picard's "Dixon Hill" holodeck adventures
Rekar	Judson Scott	Message in a Bottle (VOY)
Romulan commander who hijacked the USS Prometheus NX-59650 with 26 other Romulans. He intended to turn over the experimental prototype Federation starship to the Tal Shiar, but was felled by neurozine gas released by the Prometheus EMH Mark II.
Dexter Remmick	Robert Schenkkan	Coming of Age (TNG), Conspiracy (TNG)
Starfleet lieutenant commander and member of the Inspector General's Office. On orders from Admiral Gregory Quinn, he investigated the crew of the Enterprise-D for signs of anything "wrong", but found nothing. Soon afterward, he was infested by the alien queen parasite, which was "taking over" Starfleet officers in an attempt to take control of Starfleet. Picard and Riker were forced to kill him and the queen.
Retaya	Carlos LaCamara	Improbable Cause (DS9)
A Flaxian merchant who visited Starbase Deep Space Nine in 2371. He dealt in fine wares, mostly fabrics and fragrances. He was a suspect in the murder of Dekora Assan on Japori II, but was cleared of those charges; it was a case of mistaken identity. He was hired by the Tal Shiar, at Enabran Tain's behest, to kill Elim Garak. Retaya intended to use a gaseous mixture of fragrances to trigger a fatal heart attack, but never got the chance because Garak blew up his own shop. Retaya was killed by the Tal Shiar for failing his mission.
Paul Rice	Marco Rodriguez	The Arsenal of Freedom (TNG)
Starfleet captain of the light cruiser USS Drake, which disappeared in the Lorenze Cluster. The Enterprise-D found its remains at the planet Minos and determined that it had been destroyed by the Echo Papa 607 automated defense system. Rice and William Riker were Academy friends, which was why the Echo Papa 607 used a hologram of Rice in an attempt to get tactical information about the Enterprise.
Kyle Riker	Mitchell Ryan	The Icarus Factor (TNG)
Civilian strategist, father of William Riker
Thomas Riker	Jonathan Frakes	Second Chances (TNG), Defiant (DS9)
Transporter twin of William Riker. Steals the USS Defiant from Deep Space Nine by impersonating his "twin" after joining the Maquis resistance.
William Thomas Riker	Jonathan Frakes	TNG, Death Wish (VOY), These Are the Voyages... (ENT), GEN, FCT, INS, NEM
First officer of the Enterprise-D and Enterprise-E under Captain Picard; Captain of the USS Titan.
Kevin Thomas Riley	Bruce Hyde	The Naked Time (TOS), The Conscience of the King (TOS)
Navigator of the Starship Enterprise for the first season of the show. His character was one of the first crew members affected by the PSI-2000 illness. Riley's parents were killed by governor Kodos on planet Tarsus IV but Riley survived, remembering Kodos' voice. He later tried to murder Kodos, in disguise as an actor, but was dissuaded by Captain Kirk.
Rislan	James Noah	Displaced (VOY)
Nyrian scientist pretending to help Torres with the unexplained transports switching the Voyager crew with Nyrians
Roy Ritterhouse	J. G. Hertzler	Far Beyond the Stars (DS9)
Artist for a 1950s-era science fiction magazine in a vision experienced by Benjamin Sisko
Riva	Howie Seago	Loud as a Whisper (TNG)
Mute Federation negotiator who communicates telepathically with a group of individuals who speak on his behalf and is farried to a mission by the Enterprise-D
Rixx	Michael Berryman	Conspiracy (TNG)
Bolian captain of the USS Thomas Paine. He joined fellow captains Walker Keel and Tryla Scott on Dytallix B to warn Picard about the alien conspiracy at/invasion of Starfleet. He and Picard had met once before at the Altairian Conference.
Ro Laren	Michelle Forbes	Ensign Ro (TNG) recurring thereafter
Bajoran Starfleet officer who deserted to join the Maquis
Richard Robau	Faran Tahir	ST
Captain of the USS Kelvin who relinquishes command to James T. Kirk's father, George Kirk (Chris Hemsworth). Killed by Nero (Eric Bana). The Middle Eastern Robau was conceived as having been born in Cuba; the character is named after Star Trek co-writer Roberto Orci's uncle.
Rain Robinson	Sarah Silverman	Future's End (VOY)
Young woman working for SETI
Rodek	Tony Todd	Sons of Mogh (DS9)
Son of Noggra. Identity given to Kurn after Worf felt unwilling to fulfill Kurn's request for ritual murder
Amanda Rogers	Olivia d'Abo	True Q (TNG)
Member of the Q Continuum, raised as a human
Rom	Max Grodénchik	Emissary (DS9) recurring thereafter
Ferengi, brother of Quark. Becomes Grand Nagus shortly after Zek's retirement.
Romulan	Darwyn Carson	Improbable Cause (DS9)
A female Tal Shiar agent in 2371 who admitted that a Flaxian, Retaya, was killed for crimes against the Romulan Star Empire, and said that the Tal Shiar had been looking for him for nearly a year. She knew that a Cardassian named "Mr. Garak" lived on Starbase Deep Space Nine, but "guessed" that he was a "cobbler" by profession. When Commander Benjamin Sisko corrected her that Garak was a tailor, she said she'd correct her records … if Garak was still alive. When Sisko said he was, the agent was noticeably silent for a beat.
Romulan Commander	James Doohan	The Survivor (TAS)
He commanded two D7-class battle cruisers in 2269. When he caught the Enterprise in the Romulan Neutral Zone, he noted that Captain James T. Kirk had a propensity for trespassing there and demanded the Enterprise's surrender. Kirk refused, claiming that the commander had lured the Enterprise into the Neutral Zone (a treaty violation) through the use of a Vendorian (also a treaty violation). After a brief battle, the commander withdrew his ships. (In his novelization of "The Survivor" in Star Trek Log Two, Alan Dean Foster named this character "Larus.")
Romulan Commander	Mark Lenard	Balance of Terror (TOS)
He commanded the Praetor's flagship Bird-of-Prey in destructive attacks against Federation outposts 2, 3, 4 and 8 along the Romulan Neutral Zone in 2266. His mission was to test Starfleet defenses after more than a century of no contact, as well as the effectiveness of the Romulans' new cloaking system and plasma weapon. His was the first Romulan face ever "officially" seen by Starfleet officers. He proved to be a match for Captain James T. Kirk, even though he privately detested provoking the Federation and risking another war for the Romulan Star Empire. When Kirk finally defeated him, he refused any rescue attempt because it was not the "Romulan way." Instead, he self-destructed his own ship.
Romulan Commander	Joanne Linville	The Enterprise Incident (TOS)
She commanded three Romulan warships that captured the Enterprise after it "strayed" into Romulan space in 2269. She was also responsible for the loss of the "new and improved" cloaking device after Kirk and Spock "played" her. She ended up aboard the Enterprise as a prisoner/guest. Although not named in the script or the finished episode, she "whispered" her name to Spock during his time aboard her flagship.
Romulan Commander	J. Patrick McCormack	NEM
He stands before the Imperial Senate and quietly acquiesces, "Yes, sir", when Praetor Hiren refuses to pursue an alliance with Shinzon of Remus. (Noncanon: The movie novelization names his character "Bezor".)
Romulan Commander	David Ralphe	NEM
In the Imperial Senate, he ardently proposes an alliance between the Romulan military and Shinzon of Remus. He says that with their combined strength, not even the Federation would dare oppose the Star Empire.(Noncanon: The movie novelization names his character "Talik".)
Romulan Commander	Maurice Roëves	The Chase (TNG)
He commanded a Romulan Warbird that, while cloaked, followed the Enterprise-D and two Cardassian warships to a planet in the Vilmoran system. On the surface, he witnessed the holographic message from a humanoid who claimed that her race seeded the primordial oceans of many worlds with ancient DNA, thereby suggesting that humans, Klingons, Vulcans/Romulans and Cardassians are all related. Before leaving the planet, the Commander contacted Picard and admitted that, perhaps, their people were not so dissimilar after all.
Romulan Commander	Lou Scheimer	The Practical Joker (TAS)
In 2269, he commanded three D7-class battle cruisers, which hid behind a Type-4 asteroid and ambushed the Enterprise as she approached. The commander claimed that the Enterprise had trespassed into Romulan territory and that he was forced to defend it. He also said that the invasion of Romulan territory was punishable by death. Later, when the Enterprise released a larger decoy balloon of itself, the commander pursued it at attack speed. After destroying it easily and learning that he'd been tricked, he was so furious that he followed the real Enterprise into Federation territory, hoping to destroy it. In so doing, he entered a strange energy field in space, and when his ships' instrumentation was rendered useless, he decided to vacate the field before his ships broke up. He ordered a course set for home. However, brief passage through the field caused his food synthesizers to malfunction. He and his crew were "knee deep in desserts" when last heard from.
Romulan Commander	Peter Vogt	Tin Man (TNG)
He commanded the second Romulan Warbird that was sent to make first contact with Tin Man. However, after learning of the first Warbird's destruction by Tin Man, he warned Picard not to interfere with his new mission to destroy the "star creature".
Romulan Crewman	Norm Prescott	The Practical Joker (TAS)
He served on the Romulan flagship in 2269. When the Enterprise released a larger decoy balloon of itself, the crewman attempted radio contact, but received no reply. Later, when the flagship was pursuing the real Enterprise through a strange energy field in space, he noted that his instruments were useless and that he'd lost contact with the Federation starship. (In his novelization of "The Practical Joker" in Star Trek Log Six, Alan Dean Foster named this character "Varpa".)
Ronin	Duncan Regehr	Sub Rosa (TNG)
Aniphasic alien, killed by Doctor Crusher
William J. Ross	Barry Jenner	A Time to Stand (DS9) recurring thereafter
Vice Admiral William Ross was the Field Commander of Starfleet forces during the Dominion War.
Connaught Rossa	Barbara Townsend	Suddenly Human (TNG)
Starfleet vice admiral and biological grandmother of Jeremiah Rossa.
Jeremiah Rossa	Chad Allen	Suddenly Human (TNG)
See Jono, human born Jeremiah Rossa, adopted by Talarian Captain Endar in accordance with Talarian customs
Herbert Rossoff	Armin Shimerman	Far Beyond the Stars (DS9)
A writer for a 1950s era science fiction magazine in a vision experienced by Benjamin Sisko.
Michael Rostov	Joseph Will	Vox Sola (ENT) recurring thereafter
Engineering crewman on Jonathan Archer's Enterprise (NX-01)
Jackson Roykirk	Marc Daniels	The Changeling (TOS)
21st Century robotics engineer who built the space probe known as Nomad which was launched from Earth to explore the galaxy
Alexander Rozhenko	Jon Paul Steuer Brian Bonsall James Sloyan Marc Worden	Reunion (TNG) recurring thereafter, Sons and Daughters (DS9) recurring thereafter
Son of Worf. Raised at various points by his mother, father, and paternal grandparents. Joins the Klingon military during the Dominion War.
Helena Rozhenko	Georgia Brown	Family (TNG) recurring thereafter
Adoptive mother of Worf, lived with her husband Sergey (see below) for a while on the planet Gault before settling back on Earth. Later in life, Helena, along with Sergey, accepted custody of Worf's son Alexander Rozhenko.
Nikolai Rozhenko	Paul Sorvino	Homeward (TNG)
Worf's brother by his adoptive parents. The character's name in the non-canon Peter David Starfleet Academy novel Worf's First Adventure was Simon.
Sergey Rozhenko	Theodore Bikel	Family (TNG)
Adoptive father of Worf, Sergey was a chief petty officer aboard the USS Intrepid who found and adopted Worf after his ship was sent to aid the Klingons after the Khitomer massacre in 2346. Husband of Helena Rozhenko (see above)
Benny Russell	Avery Brooks	Far Beyond the Stars (DS9)
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.
Ruwon	Jack Shearer	Visionary (DS9)
Romulan officer (possibly a Tal Shiar operative) who, in 2371, was part of a delegation to Starbase Deep Space Nine to study Starfleet Intelligence reports on the Dominion. However, this appears to have been a ruse. The Romulans regard the Dominion as the greatest threat to the Alpha Quadrant in the past century, so their real mission is to collapse the Bajoran Wormhole to prevent any Dominion incursion from the Gamma Quadrant. First, however, they plan to destroy Deep Space Nine.
Burt Ryan	Marc Alaimo	Far Beyond the Stars (DS9)
1950's era city police officer in a vision experienced by Benjamin Sisko

S

Character	Actor	Episodes
Description
Saavik	Kirstie Alley Robin Curtis	WOK, SFS, TVH.
Half-Vulcan, half-Romulan Starfleet officer (lieutenant junior grade), she was Spock's protege right out of the Academy. After the formation of the Genesis Planet, she was reassigned to the USS Grissom, a science vessel sent to study the new world. She was marooned there with David Marcus and a young, "regenerated" Spock. She and Spock survived the ordeal and traveled to Vulcan aboard a Klingon Bird-of-Prey captured by Admiral Kirk and crew. Months later, when Kirk and the others returned to Earth to stand trial, she remained on Vulcan with Amanda Grayson.
Sakkath	Rocco Sisto	Sarek (TNG)
Assistant to Sarek during the Legaran negotiations
Salia	Jaime Hubbard	The Dauphin (TNG)
Future ruler of Daled IV, farried to her planet by the Enterprise-D
Sarek	Mark Lenard Jonathan Simpson Ben Cross	Journey to Babel (TOS), Sarek (TNG), Redemption (TNG), TMP, SFS, TVH, TFF, TUC, ST
Famed Vulcan ambassador, father of Spock and Sybok
Sarjenka	Nikki Cox	Pen Pals (TNG)
Young female native of a seismically active planet who was helped by Data
Satan's Robot	Tarik Ergin	Night (VOY) recurring thereafter
A robot character in The Adventures of Captain Proton holodeck program
Norah Satie	Jean Simmons	The Drumhead (TNG)
Legendary Starfleet admiral who headed a paranoia-fueled investigation aboard Enterprise-D. Before "Encounter at Farpoint", she, as vice admiral, issued orders that requested and required Picard to assume command of the Enterprise-D.
Saunders	Eric Pierpoint	For the Uniform (DS9)
Captain of the starship Malinche assigned to take up the search for renegade Michael Eddington after the Defiant becomes disabled
Tryla Scott	Ursaline Bryant	Conspiracy (TNG)
Youngest captain in Starfleet history, helped warn Picard of an alien takeover of Starfleet
Sek	Ronald Robinson	Repression (VOY)
Firstborn son of Tuvok and T'Pel
Sela	Denise Crosby	The Mind's Eye (TNG), Redemption, Part II (TNG), Unification, Part II (TNG)
Romulan commander and hybrid daughter of an alternate timeline version of Tasha Yar and a Romulan general, non-canonically named "Meldet" in the Unification TV episode novelization. In late 2367, Sela supervised the "conditioning" of Geordi La Forge aboard her Warbird. Meddling in the Klingon Civil War by providing weapons to the House of Duras, her alternate timeline origins are revealed, linked to the "Yesterday's Enterprise" episode. Sela also coordinated a plan to invade the planet Vulcan using a holographic falsification of Ambassador Spock.
Dr. Selar	Suzie Plakson	The Schizoid Man (TNG)
Vulcan female, Starfleet medical officer and lieutenant on the Enterprise-D. The character has a major role in the Star Trek: New Frontier spin-off novels.
Selok	Sierra Pecheur	Data's Day (TNG)
Romulan subcommander who masqueraded as Vulcan ambassador T'Pel for such a long time that she had earned a reputation as one of the Federation's most honored diplomats. Her final mission as "T'Pel" was as a peace envoy to the Romulans, but "T'Pel" was apparently "killed" in a transporter accident while beaming aboard the IRW Devoras. When Picard pursues the matter of T'Pel's "death", Selok reveals herself as alive and well on the Devoras.
Septimus	Ian Wolfe	Bread and Circuses (TOS)
Roman citizen and Sun (Son) worshipper on planet 892-IV
Seven of Nine	Jeri Ryan	VOY
Her full designation was "Seven of Nine, Tertiary Adjunct of Unimatrix 01." Former Borg drone, liberated by the USS Voyager. Later, she joined the crew of Voyager. Her human name is Annika Hansen.
Gideon Seyetik	Richard Kiley	Second Sight (DS9)
Terraformer
Shakaar Edon	Duncan Regehr	Shakaar (DS9) recurring thereafter
Former leader of Bajoran resistance during Cardassian occupation, later First Minister of Bajor
Shelby	Elizabeth Dennehy	The Best of Both Worlds (TNG)
Starfleet lieutenant commander assigned to the Enterprise-D to provide assistance against the Borg. Field-promoted to commander and first officer when Picard was assimilated. Major character in Star Trek: New Frontier series, given the first name "Elizabeth" and promoted from commander to captain to rear admiral.
Shinzon	Tom Hardy	NEM
An imperfect clone of Captain Jean-Luc Picard created by the Romulans with the intent of replacing Picard. This plan was abandoned and Shinzon was exiled to Remus. He led Reman soldiers during the Dominion War. At the beginning of Nemesis, Shinzon leads a coup d'état of the Romulan Senate and installs himself as praetor. Picard and the USS Enterprise-E travel to Romulus to meet Shinzon and investigate his peace overture; Shinzon reveals his identity and origins to Picard. However, the peace overture is part of a plan to lure Picard to Romulus; the cloning process that created Shinzon is killing him, and he requires an infusion of Picard's DNA to stay alive. Simultaneously, Shinzon plans to use a thalaron radiation weapon aboard his ship, the Scimitar, to destroy all life on Earth. The Scimitar attacks and severely damages the Enterprise. Picard transports aboard the Reman ship and fights Shinzon. After a short fight, Picard kills Shinzon by impaling him with a pole. Lieutenant Commander Data rescues Picard from the Scimitar and destroys the vessel's thalaron device, annihilating the ship and himself in the process.
Shras	Reggie Nalder	Journey to Babel (TOS)
Andorian ambassador to the 2267 "Babel" conference regarding the admission of Coridan into the Federation. Shras speaks with a thick accent and describes his people as a "violent race." He says he knows nothing of Thelev except that he's a minor member of the Andorian staff who has served "adequately". To help Spock in his investigations into the murder of Tellarite ambassador Gav and Thelev's attack on Captain Kirk, Shras suggests that the half-Vulcan "forget logic" and devote himself to "motivations of passion or gain".
Jaglom Shrek	James Cromwell	Birthright (TNG)
Yridian with information to sell about Klingons captured by Romulans at Khitomer
Shresht	None
Name used in novelisations for the Insectoid representative on the Xindi Council
Khan Noonien Singh	Ricardo Montalbán Benedict Cumberbatch	Space Seed (TOS), WOK, ID
Genetically enhanced superman from the mid-1990s who attempted to seize control of the Enterprise; 15 years later, after having been marooned on Ceti Alpha V, he took revenge on Admiral Kirk by hijacking the USS Reliant NCC-1864 and attacking the Enterprise.
Sirol	Michael Mack	The Pegasus (TNG)
Romulan commander of the IRW Terix. In 2370, a piece of debris found in the Devolin system was positively identified as being from the USS Pegasus NCC-53847. The Terix was assigned to locate the rest of the ship and retrieve it. Sirol's cover story to Picard was that the Terix was conducting a survey of gaseous anomalies in the Devolin system. Later, when the Enterprise-D became trapped inside Asteroid Gamma 601, Sirol told Picard that the Terix had been conducting some geological experiments on the surface and may have sealed the Enterprise-D inside accidentally.
Benjamin Lafayette Sisko	Avery Brooks	DS9
Commanding officer of Starbase Deep Space 9 (DS9) and Emissary to the Bajoran Prophets. Promoted from commander to captain after almost four years into his assignment on DS9. Father of Jake Sisko. Widower of Jennifer Sisko.
Jake Sisko	Cirroc Lofton Thomas Hobson Tony Todd	DS9
Son of Benjamin and Jennifer Sisko
Jennifer Sisko	Felecia M. Bell	Emissary (DS9) recurring thereafter
Wife of Benjamin Sisko, killed at Wolf 359, but survived in mirror universe.
Joseph Sisko	Brock Peters	Homefront (DS9) recurring thereafter
New Orleans restaurateur and father of Benjamin Sisko
Korenna Sisko	Galyn Görg	The Visitor (DS9)
Bajoran wife of Jake Sisko in an alternate future
Sito Jaxa	Shannon Fill	The First Duty (TNG), Lower Decks (TNG)
Bajoran female who, while a cadet at Starfleet Academy, was implicated with Wesley Crusher for having caused the death of a fellow cadet. As an ensign aboard the Enterprise-D, she served as a security officer. She undertook a dangerous mission to return a Cardassian double agent, Joret Dal, to his home territory, but was killed in action. Sito also appears in various books including the DS9 novel in the Mirror Universe series
Jessica Sloan	Jacqueline Schultz	Extreme Measures (DS9)
Wife of Section 31 operative Luther Sloan
Luther Sloan	William Sadler	Inquisition (DS9) recurring thereafter
Section 31 operative who attempted to recruit Bashir numerous times
Lily Sloane	Alfre Woodard	FCT
Twenty-first century human female who was treated for radiation poisoning on the Enterprise, and later befriended Captain Picard. She assisted Zefram Cochrane in building the Phoenix, the first warp-capable ship on Earth.
Smith	Andrea Dromm	Where No Man Has Gone Before (TOS)
Twenty-third century human female who served as a command-division yeoman on the Enterprise; close to Gary Mitchell. Originally intended as a regular character with intentions toward Captain James T. Kirk (who, obliviously, couldn't even remember her name), Dromm (a well-known model at the time) departed the series to pursue a film career.
Sonak	Jon Rashad Kamal	TMP
Starfleet commander and Vulcan. He is assigned to the Enterprise as science officer during the V'Ger crisis, but is killed during a transporter accident while beaming up.
Arik Soong	Brent Spiner	Borderland (ENT) recurring thereafter
Criminal creator of genetically engineered humans, ancestor of Noonien Soong
Juliana Soong	None	Inheritance (TNG)
Deceased wife of Noonien Soong whose conscience was transferred at her death to an identical Soong-type android who, in turn, left Noonien, married Pran Tainer (thereafter taking the name Juliana Tainer) and took up residence on planet Altrea IV.
Noonien Soong	Brent Spiner	Brothers (TNG) recurring thereafter
Human cyberneticist who created Data, also played by Brent Spiner. Soong has created three complete androids in the known Star Trek universe, Data, Lore, and a replica of his dead wife Juliana, which is technically superior to his previous models, as well as three proto-type androids including B-4 (in the same design as Data and Lore). Early in Dr. Soong's career he was widely hailed as Earth's foremost robotic scientist, but he became a recluse after apparently failing to create a positronic brain and was thought to have been killed with other colonists on Omicron Theta. The scientist actually settled on Terlina III and summoned Data there to fit him with his final invention, an emotion chip. He inadvertently also summoned Data's brother, Lore, who attacked him after obtaining the chip. Soong survived, but was nearing death and elected to remain on Terlina rather than go aboard the Enterprise for medical care. The name "Noonien" came from Gene Roddenberry, who had an old Chinese friend named Noonien Wang that he had lost touch with. Roddenberry hoped that perhaps Wang would see the episode and contact him.
Tolian Soran	Malcolm McDowell	GEN
El-Aurian scientist who was desperate to return to the Nexus.
Sovak	Max Grodénchik	Captain's Holiday (TNG)
Ferengi who sought to profit from an archaeological search for the Tox Uthat. In uniform, he wore the rank insignia of a "daimon".
Soval	Gary Graham	Broken Bow (ENT) recurring thereafter
Vulcan ambassador to Earth in the 22nd century.
Spock	Leonard Nimoy Zachary Quinto	TOS, TAS, Unification 1&2 (TNG) TMP, WOK, SFS, TVH, TFF, TUC, ST, ID, BEY
Son of Vulcan ambassador Sarek and human Amanda Grayson. Science Officer on the USS Enterprise under Captain Pike, additionally First Officer both there and on the USS Enterprise-A under Captain Kirk; Captain at Starfleet Academy; Federation Ambassador.
Spot		Data's Day (TNG) recurring thereafter, GEN, NEM
Data's female pet cat.
Ssestar	John Durbin	Lonely Among Us (TNG)
Selay delegate to the summit with the Anticans on Parliament. Before the Enterprise-D arrives, however, Lieutenant Tasha Yar believes that the Anticans may have eaten him.
Henry Starling	Ed Begley, Jr.	Future's End (VOY)
20th century pothead turned entrepreneur after discovering a 29th-century spacecraft that crash-landed near his campsite.
Stel	Larc Spies	The Forge (ENT)
Vulcan chief investigator of the Vulcan Security Directorate in 2154. He carried a bomb into the United Earth Embassy on Vulcan and blamed the ensuing destruction on T'Pau and the Syrrannites. After Doctor Phlox's medical investigation cleared T'Pau of any wrongdoing, Stel and Administrator V'Las tried to implicate the Andorians, but that didn't fly either. Stel was forced to take full responsibility for his terrorist act, and V'Las removed him from his position.
Stocker	Charles Drake	The Deadly Years (TOS)
Starfleet commodore and bureaucrat (Kirk calls him "a chair-bound paper-pusher") who hitches a ride on the Enterprise to his new post at Starbase 10. He wears a red uniform tunic. When the landing party to Gamma Hydra IV is stricken with advanced aging, Stocker compels Spock to convene an extraordinary competency hearing for Kirk. When the captain is relieved and Spock and Scotty are too ill to assume command, Stocker takes control and orders the Enterprise to take a shortcut through the Romulan Neutral Zone to reach Starbase 10 faster. Multiple Romulan Birds-of-Prey converge on the Enterprise and attack relentlessly. Stocker is utterly paralyzed with indecision until a rejuvenated Captain Kirk steps in and tricks the Romulans into giving the Enterprise a wide berth.
Stol		Q-Less (DS9)
A cousin of Quark's and Rom's seen bidding 500 bars of gold-pressed latinum for a bejeweled dagger from the Gamma Quadrant during Vash's auction.
Stone	Percy Rodriguez	Court Martial (TOS)
Starfleet commodore and commanding officer of Starbase 11. He wears a red uniform tunic instead of the normal yellow for command officers. When Kirk is implicated in the death of Lieutenant Commander Benjamin Finney, Stone strongly recommends that he plead out and take a ground assignment. Kirk refuses, so Stone convenes a court-martial and acts as president of the court.
Stonn	Lawrence Montaigne	Amok Time (TOS)
Vulcan, T'Pring's lover and Spock's rival for her affections.
Dr. Paul Stubbs	Ken Jenkins	Evolution (TNG)
Human astrophysicist who tried to wipe out a race of nanites to further his own research.
Styles	James Sikking	SFS
A Starfleet officer, captain of the USS Excelsior (NX-2000)
Lon Suder	Brad Dourif	Meld (VOY) recurring thereafter
Betazoid Maquis psychopath who helped retake Voyager after it was commandeered by the Kazon. On Voyager, he was a brevet ensign.
Michael Sullivan	Fintan McKeown	Fair Haven (VOY) recurring thereafter
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.
Demora Sulu	Jacqueline Kim	GEN
Hikaru Sulu's daughter, served aboard the Enterprise-B as ensign and pilot (helm officer).
Surak	Barry Atwater Bruce Gray	The Savage Curtain (TOS), Awakening (ENT)
Legendary Vulcan who led his people to a peace through a philosophy of logic over emotion
Suran	Jude Ciccolella	NEM
Romulan commander who assures Praetor Shinzon of the fleet's allegiance. However, when Shinzon delays his attack on the Federation, and inexplicably invites the Enterprise-E to Romulus, Suran is greatly exasperated. Shinzon, distrustful of him, suggests that he learn patience … and proper respect.
Sutok	Steve Kehela	Fair Trade (VOY)
Drug addict who buys his drugs at the Nekrit Supply Depot
Sybok	Laurence Luckinbill	TFF
Sarek's son by a Vulcan princess and Spock's half-brother who hijacks the Enterprise-A in attempt to reach God at the center of the galaxy.
Syrran	Michael Nouri	The Forge (ENT)
Vulcan male who was in possession of Surak's katra in 2154. As such, he and his followers, the Syrrannites, sought the Kir'Shara, an ancient artifact that contained Surak's original writings and was the only surviving record of his true teachings. If found, then it would threaten the legitimacy of the Vulcan High Command and have an enormous impact on the Vulcan people. When Syrran met Jonathan Archer and T'Pol in Vulcan's Forge, he introduced himself as Arev, which means "desert wind." Syrran was killed soon afterward by an electrical discharge during a sand-fire storm, but before he died, he transferred Surak's katra to Archer.

See also

• List of Star Trek characters A–F • G–M • T–Z
• List of recurring Star Trek: Deep Space Nine characters • Enterprise • The Next Generation • The Original Series • Voyager
• List of Star Trek episodes