List of Star Trek characters (A–F)

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


Abbreviation Title Medium
TOS Star Trek: The Original Series (1966–1969) TV
TAS Star Trek: The Animated Series (1973–1974) TV
TNG Star Trek: The Next Generation (1987–1994) TV
DS9 Star Trek: Deep Space Nine (1993–1999) TV
VOY Star Trek: Voyager (1995–2001) TV
ENT Star Trek: Enterprise (2001–2005) 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

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.


Character Actor Episodes
Leonard James Akaar (Memory Alpha article) Friday's Child (TOS)
Son of the late Teer Akaar and his widow Eleen on the planet Capella IV. Born 2267 shortly after his father was killed in a Klingon-induced power struggle, he was named after James T. Kirk and Leonard McCoy, who helped to resolve the local conflict. Leonard James Akaar inherited the title of "teer," or chief, of the Ten Tribes of Capella IV. His mother served as regent until the boy came of age to rule. In the novels, Akaar grows up and joins Starfleet; we first see him serving as chief of security on the USS Excelsior under Captain Hikaru Sulu. Later, in the Star Trek: Deep Space Nine relaunch novels, Akaar is a veteran admiral in the fleet.
Akorem Laan (Memory Alpha article) Richard Libertini (Memory Alpha article) Accession (DS9)
Bajoran poet best known for The Call of the Prophets. Traveling in a Bajoran lightship, Akorem was the first to find the Celestial Temple (the wormhole to the Gamma Quadrant); when he emerged about 200 years later, Benjamin Sisko gave up his title of Emissary so that Akorem could take it, a decision Sisko regretted when Akorem advocated a return to the D'Jarras (the Bajoran caste system). Sisko and Akorem went to the wormhole together, and the Prophets decided to send Akorem back to his time and reinstate Sisko as their Emissary.
Alixus (Memory Alpha article) Gail Strickland (Memory Alpha article) Paradise (DS9)
Leader of a colony that settled on planet Orellius in 2360, responsible for several deaths because she rejected any form of technologically-based medicine.
Almak (Memory Alpha article) Message in a Bottle (VOY)
Romulan subcommander of the I.R.W. T'Met. He leads two other Warbirds to take possession of the U.S.S. Prometheus NX-59650, an experimental prototype Federation starship, from its Romulan hijacker, Commander Rekar. However, Almak's fleet opens fire on the Prometheus when he learns that Rekar is no longer in control of it. (Discrepancy Note: The voice-over actor clearly identifies the character as "Almak," but the closed-captioning reads "Almar" and The Star Trek Encyclopedia lists him as "Almar." There must have been a last-minute change that differs from the shooting script.)
Altovar (Memory Alpha article) Victor Rivers (Memory Alpha article) Distant Voices (DS9)
Lethean criminal who was caught stealing bio-mimetic gel from Deep Space Nine in 2371.
Aluura (Memory Alpha article) Symba Smith (Memory Alpha article) Profit and Lace (DS9)
A Dabo girl who worked at Quark's in 2374.
Kiaphet Amman'sor (Memory Alpha article) None The Xindi (ENT)
recurring thereafter

A female aquatic Xindi. She is a member of the Ibix dynasty, and the head aquatic on the Xindi Council.

Anya (Memory Alpha article) Paddi Edwards (Memory Alpha article) The Dauphin (TNG)
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.
Robert April (Memory Alpha article) Voice: James Doohan (Memory Alpha article) The Counter-Clock Incident (TAS)
First captain of the USS Enterprise (NCC-1701) during its initial five-year mission. April, later a commodore, was succeeded by Christopher Pike.
Sarah April (Memory Alpha article) Voice: Nichelle Nichols (Memory Alpha article) The Counter-Clock Incident (TAS)
Wife of Robert April and Chief Medical Officer of the USS Enterprise (NCC-1701) when her husband was skipper.
Jonathan Archer (Memory Alpha article) Scott Bakula (Memory Alpha article) ENT
Captain of the USS Enterprise (NX-01)
Ardra (Memory Alpha article) Marta DuBois (Memory Alpha article) Devil's Due (TNG)
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.
Arex (Memory Alpha article) Voice: James Doohan (Memory Alpha article) Beyond the Farthest Star (TAS) recurring thereafter
Lieutenant Arex, voiced by James Doohan, was a recurring character on Star Trek: The Animated Series which ran on NBC from 1973 to 1974.[1] The series' writers and artists were able to create his unique alien look because the series was animated; creating such a character with a live-action actor in make-up would not have been feasible.[2] The character was later used in Star Trek novels and comics.

Arex was a Starfleet officer assigned to the USS Enterprise as navigator. Arex was a member of a tripedal species (the Edosians) and had three arms and legs.[3] Arex also sometimes took the conn, but he rarely left the ship on landing party missions.

Armus (Memory Alpha article) Mart McChesney (Memory Alpha article)

Voice: Ron Gans (Memory Alpha article)

Skin of Evil (TNG)
Sentient viscous black liquid (the by-product of a procedure in which a race of "titans" shed all their evil and negative attributes) that killed Tasha Yar.
Dr. Arridor (Memory Alpha article) Dan Shor (Memory Alpha article) The Price (TNG),
False Profits (VOY)
Member of a Ferengi delegation sent to negotiate for the rights to the Barzan wormhole in 2366.
Askwith (Memory Alpha article) Rafael Boza (Memory Alpha article) The Forge (ENT)
Starfleet corporal at the United Earth Embassy on Vulcan in 2154. After its bombing, Ambassador Soval performed a mind meld with Askwith and learned that Chief Investigator Stel was responsible for bringing the explosive into the embassy.
Jeremy Aster (Memory Alpha article) Gabriel Damon (Memory Alpha article) The Bonding (TNG)
Human civilian, orphaned when his mother, Marla Aster, an officer aboard the USS Enterprise-D was killed in 2366 on an away mission.
Marla Aster (Memory Alpha article) Susan Powell (Memory Alpha article) The Bonding (TNG)
Archaeologist aboard the Enterprise-D, and mother of Jeremy Aster. Killed on an away mission in 2366.
Mr. Atoz (Memory Alpha article) Ian Wolfe (Memory Alpha article) All Our Yesterdays (TOS)
Librarian and keeper of the Atavachron time-portal device on the planet Sarpeidon.
Arev (Memory Alpha article) Michael Nouri (Memory Alpha article) The Forge (ENT)
Alias used by Syrran when he introduced himself to Jonathan Archer and T'Pol on Vulcan's Forge.
Atul (Memory Alpha article) Dennis Madalone (Memory Alpha article) Visionary (DS9)
Klingon officer and one of three members of a covert strike force conducting surveillance of the Romulan delegation to Starbase Deep Space 9 in 2371. He is the last of his party to be thrown into the brig.
Ayala (Memory Alpha article) Tarik Ergin (Memory Alpha article) Caretaker, Part I (VOY) recurring thereafter
Security officer aboard the USS Voyager and former member of the Maquis
Azetbur (Memory Alpha article) Rosana DeSoto (Memory Alpha article) TUC
Daughter of Klingon Chancellor Gorkon, Azetbur ascended to the chancellorship herself when her father was assassinated in 2293.


Character Actor Episodes
B-4 (Memory Alpha article) Brent Spiner (Memory Alpha article) NEM
B-4 was first seen in the movie Star Trek Nemesis. He is a Soong-type android (named after Dr. Noonien Soong, their creator). B-4 is one of the five other androids built by Dr. Soong before Lore and Data.

Praetor Shinzon of Remus was able to obtain the disassembled B-4 and placed some special programming into him, so he could infiltrate the USS Enterprise-E to gain tactical information of the Federation from the ship.

Badar N'D'D (Memory Alpha article) Marc Alaimo (Memory Alpha article) Lonely Among Us (TNG)
Antican delegate to the summit with the Selay on Parliament. (Note: Character name comes from the script.)
B'Etor (Memory Alpha article) Gwynyth Walsh (Memory Alpha article) Redemption (TNG),
Firstborn (TNG),
Past Prologue (DS9),
Klingon female; one of the Duras sisters.
Bahrat (Memory Alpha article) Carlos Carrasco (Memory Alpha article) Fair Trade (VOY)
Heavy-handed manager of the Nekrit Supply Depot located near the border of the Nekrit Expanse. Bahrat insisted on a 20 percent commission on trades taking place at his station.
Lyndsay Ballard (Memory Alpha article) Kim Rhodes (Memory Alpha article) Ashes to Ashes (VOY)
Voyager crewmember who died on an away mission in the Delta Quadrant and then was reanimated by the Kobali.
Barash (Memory Alpha article) Dana Tjowander (Memory Alpha article) Future Imperfect (TNG)
A solitary child from an undetermined species who, desperate for a companion, used an illusory world to entrap William Riker in his specially modified cave on Alpha Onias III. Riker eventually saw through the young alien's illusions and brought Barash back to the Enterprise-D with him.
Reginald Barclay (Memory Alpha article) Dwight Schultz (Memory Alpha article) Hollow Pursuits (TNG)
recurring thereafter,

Projections (VOY)
recurring thereafter

Although he may appear to be nervous and lacking in confidence, Reginald "Reg" Barclay is a highly talented Starfleet systems diagnostic engineer. Stationed aboard the Enterprise-D from 2366, Barclay had a tendency to spend more time inside the holodeck than in real social situations. He also suffered from severe transporter phobia in 2369, although he seems to have overcome this psychological barrier. He also spent time at Jupiter Station as Dr. Lewis Zimmerman's assistant on his EMH project.

While stationed aboard the USS Enterprise-E in 2373, and through a strange turn of events involving the Borg, Barclay was able to meet one of his idols, Zefram Cochrane. By 2376, Barclay's main focus was developing a means of communicating with the missing USS Voyager still stranded in the Delta Quadrant.

Professor Honey Bare (Memory Alpha article) Terry Farrell (Memory Alpha article) Our Man Bashir (DS9)
Although a holographic character in Julian Bashir's secret agent holosuite program, Professor Bare took on the look of Jadzia Dax during a malfunction. Bare was reputedly Earth's top seismologist in 1964, the year the program was set.
Bareil Antos (Memory Alpha article) Philip Anglim (Memory Alpha article) In the Hands of the Prophets (DS9)
recurring thereafter
Bajoran Vedek who was nominated as possible successor to Kai Opaka, but lost the position to Kai Winn instead.
Barstow (Memory Alpha article) Richard Derr (Memory Alpha article) The Alternative Factor (TOS)
Starfleet commodore at Starfleet Command who contacts the Enterprise an hour after the disruption/distortion effects emanated from the dead planet the starship is orbiting. Barstow wants to know whether they are natural phenomena or mechanically generated, and, if the latter, by whom and for what purpose. He charges Kirk with finding out the specifics, but cannot assign reserve starships to help the Enterprise because he is evacuating all Starfleet units and personnel within 100 parsecs of her position.
Amsha Bashir (Memory Alpha article) Fadwa El Guindi (Memory Alpha article) Doctor Bashir, I Presume? (DS9)
Human female; wife of Richard Bashir, and mother of Julian Bashir.
Julian Bashir (Memory Alpha article) Alexander Siddig (Memory Alpha article) DS9,
Birthright (TNG)
Human male; Chief Medical Officer of Deep Space Nine.
Richard Bashir (Memory Alpha article) Brian George (Memory Alpha article) Doctor Bashir, I Presume? (DS9)
Human male; husband of Amsha Bashir, and father of Julian Bashir. In 2348, he took his then 6-year-old son to a planet outside the Federation to have him genetically enhanced. When the fact came out in the open about three decades later, Richard accepted a 2-year prison sentence to save Julian's career.
Marta Batanides (Memory Alpha article) J. C. Brandy (Memory Alpha article) Tapestry (TNG)
Human female; Jean-Luc Picard's Academy classmate. In an alternate timeline created by Q, she and Picard had a romantic relationship.
Morgan Bateson (Memory Alpha article) Kelsey Grammer (Memory Alpha article) Cause and Effect (TNG)
Commanding officer of the 23rd century Federation starship USS Bozeman, which became trapped in a temporal causality loop near the Typhon Expanse in 2278. Bateson and his crew emerged in 2368, unaware they had passed through 90 years of time, until Captain Picard of the USS Enterprise-D set them straight.
Gabriel Bell (Memory Alpha article) John Lendale Bennett (Memory Alpha article)

Avery Brooks (Memory Alpha article)

Past Tense (DS9)
Human male (April 24, 1987 – September 3, 2024); during a 2024 revolt in San Francisco where federal employees were held hostage, Bell made sure the hostages were not harmed. In an alternate timeline in which he was killed earlier, Benjamin Sisko stepped in to fulfill Bell's role in the pivotal historical moment. In a guidebook to Earth that Jake gave to Nog, Gabriel Bell is described as "the father of Earth's post-modern reformism," and shown with a picture of Sisko.
Belle (Memory Alpha article) Lindsey Haun (Memory Alpha article) Real Life (VOY)
Holographic female; the Doctor's daughter in his holographic family program.
Benaren (Memory Alpha article) Michael L. Maguire (Memory Alpha article) Before and After (VOY)
Ocampan male; father of Kes, husband of Martis.
Bill (Memory Alpha article) Leon Russom (Memory Alpha article) TUC
Starfleet admiral who serves as C-in-C in 2293, two months after the Klingon moon Praxis explodes. He tasks Kirk with being the Federation's "olive branch" in escorting the Klingon chancellor, Gorkon, to peace negotiations on Earth. He is addressed in dialogue only as "Bill," but he is credited as "Starfleet Chief in Command." (Noncanon: In the movie novelization, he is called "Rear Admiral William Smillie.")
Margaret Blackwell (Memory Alpha article) Nancy Vawter (Memory Alpha article) The Pegasus (TNG)
Starfleet vice admiral who ordered the Enterprise-D to rendezvous with the Starship Crazy Horse and pick up Rear Admiral Eric Pressman.
Bob (Memory Alpha article) Harve Bennett (Memory Alpha article) TFF
Starfleet admiral who, in 2287, tasks Kirk with rescuing the Federation, Klingon and Romulan hostages on Nimbus III. He is addressed in dialogue only as "Bob," but he is credited as "Starfleet Chief of Staff." (Noncanon: In the movie novelization, he is called "Admiral Robert Caflisch." However, the Paramount-Pictures-sanctioned reference text The Star Trek Encyclopedia, by Mike Okuda and Denise Okuda, has retconned the character's name to "Admiral Robert Bennett.")
Bochra (Memory Alpha article) John Snyder (Memory Alpha article) The Enemy (TNG)
Romulan centurion and one of two survivors of the crash of the Pi, a small Romulan ship, on the surface of Galorndon Core. Bochra stalks and captures Geordi La Forge, who sarcastically nicknames him "Commodore." However, when the planet's electromagnetic storms wreak havoc with Bochra's metabolism and La Forge's interface with the VISOR, the men put aside their differences and work together to locate and remodulate a neutrino beacon that Wesley Crusher has sent to help locate them. They're soon rescued by the Enterprise-D and Bochra is returned to Commander Tomalak's Warbird. (Continuity Note: Bochra uses the same Romulan salute that Decius first used back in the 1966 TOS episode "Balance of Terror.")
Bok (Memory Alpha article) Frank Corsentino (Memory Alpha article)

Lee Arenberg (Memory Alpha article)

The Battle (TNG)
Bloodlines (TNG)
Ferengi DaiMon who tried to wreak vengeance on Picard for the Battle of Maxia.
Boothby (Memory Alpha article) Ray Walston (Memory Alpha article) The First Duty (TNG),
In the Flesh (VOY),
The Fight (VOY),
Starfleet Academy comic books
Groundskeeper of Starfleet Academy and Starfleet Headquarters. In addition to tending grounds, Boothby offered advice and otherwise acted as a mentor to several characters–including Jean-Luc Picard, Kathryn Janeway, and Chakotay–when they were attending Starfleet Academy. Boothby several times gave Janeway a rose – a habit that a Species 8472 recreation of Boothby mimics. Picard, in whose opinion Boothby "is one of the wisest men he has ever known", calls upon his knowledge of the Nova Squadron cadets while investigating the death of Joshua Albert in "The First Duty."
Bo'rak (Memory Alpha article) Bob Minor (Memory Alpha article) Visionary (DS9)
Klingon officer and one of three members of a covert strike force conducting surveillance of the Romulan delegation to Starbase Deep Space 9 in 2371. Bo'rak was the drunken Klingon in this episode's teaser.
Leah Brahms (Memory Alpha article) Susan Gibney (Memory Alpha article) Booby Trap (TNG)
Galaxy's Child (TNG)
Human female; engineer who developed the warp drive of Galaxy-class starships.

During a crisis onboard the Enterprise-D, chief engineer Geordi La Forge created a holodeck representation of Brahms, and later used her mission logs to create a personality for the representation. A year later, La Forge met the real Brahms, who found out about the holodeck program La Forge had created, and turned hostile. Later, after working with La Forge, she realized her arrogance and became friends with La Forge.

In the alternate future timeline of "All Good Things...", La Forge married Brahms[4].

Branch (Memory Alpha article) David Gautreaux (Memory Alpha article) TMP
Starfleet commander of the Epsilon 9 space station, which observes the Klingons' battle with V'ger and then the cloud's direct heading for Earth. When Branch communicates some real-time tactical information to the Enterprise, V'ger reacts negatively to Epsilon 9's sensor scans and destroys the station.
Brand (Memory Alpha article) Jacqueline Brookes (Memory Alpha article) The First Duty (TNG)
Starfleet rear admiral and superintendent of Starfleet Academy in 2368. She presided over the inquiry into the death of Cadet Joshua Albert.
Braxton (Memory Alpha article) Allan G. Royal (Memory Alpha article)

Bruce McGill (Memory Alpha article)

Future's End (VOY)
Relativity (VOY)
A native of the 29th century, he is the pilot of the Federation timeship Aeon in one timeline, and captain of the Federation timeship USS Relativity in another.

Braxton traveled to the year 2373 to destroy the USS Voyager to stop it obliterating Earth's Solar System in the 29th century with a temporal explosion. In confronting Voyager, Braxton's ship was thrown back in time, where it crash-landed on Earth in 1967. Braxton survived the crash, but became separated from his ship which was salvaged by entrepreneur Henry Starling, leaving Braxton homeless and destitute. Captain Janeway and her crew tracked down the Aeon, destroying it and preventing the destruction of Earth in the 29th century. A new timeline was created and allowed Braxton to instead escort Voyager back to the 24th century.

In a later episode, Braxton commanded the Relativity in an effort to prevent a saboteur from destroying Voyager with a weapon designed to fracture spacetime. Recruiting Seven of Nine to help, the crew of the timeship discovered an older version of Braxton who suffered temporal psychosis and blamed Voyager for his circumstances; this Braxton was forced to retire after the stress of cleaning up after Voyager. He was apprehended and the younger Braxton on the Relativity arrested. The different versions of Braxton were re-integrated to stand trial, but he was guaranteed leniency in exchange for revealing the precise moment he boarded Voyager to plant the weapon.

Brunt (Memory Alpha article) Jeffrey Combs (Memory Alpha article) Family Business (DS9)
recurring thereafter
Ferengi liquidator, working for the Ferengi Commerce Authority. On multiple occasions, he threatened to shut down Quark's bar, creating a rather personal rivalry.
Bu'kaH (Memory Alpha article) Michelle C. Bonilla (Memory Alpha article) Sleeping Dogs (ENT)
Klingon female; engineer on the IKS Somraw in 2151.


Character Actor Episodes
Cartwright (Memory Alpha article) Brock Peters (Memory Alpha article) TVH, TUC
Starfleet admiral who presides at Starfleet Command in 2286, when the "whale probe/traveler" attacks Earth. In 2293, he conspires with Klingon general Chang and Romulan ambassador Nanclus to derail Federation-Klingon negotiations.
Ch'Pok (Memory Alpha article) Ron Canada (Memory Alpha article) Rules of Engagement (DS9)
Klingon advocate who prosecuted an extradition hearing on Deep Space Nine to have Worf extradited to Qo'noS after he apparently destroyed a Klingon civilian ship, killing all 441 of its passengers.
Chakotay (Memory Alpha article) Robert Beltran (Memory Alpha article) VOY
Starfleet commander and a former Maquis member, best known as the first officer of the starship USS Voyager in the TV series Star Trek: Voyager. (Throughout the series, the special rank insignia designed for former Maquis members indicates that Chakotay is a lieutenant commander, although he is only ever referred to as "commander.")
Chaotica (Memory Alpha article) Martin Rayner (Memory Alpha article) Bride of Chaotica! (VOY),
Night (VOY),
Shattered (VOY)
Metafiction holodeck character created by Tom Paris.
Christine Chapel (Memory Alpha article) Majel Barrett (Memory Alpha article) The Naked Time (TOS) recurring thereafter, Beyond the Farthest Star (TAS) recurring thereafter, TMP, TVH
Nurse aboard the USS Enterprise (NCC-1701), later a Doctor and Commander.
Charlene (Memory Alpha article) Wendy Schaal (Memory Alpha article) Real Life (VOY)
Hologram; the Doctor's wife in his holographic family program.
Pavel Chekov (Memory Alpha article) Walter Koenig (Memory Alpha article) TOS, TMP, WOK, SFS, TVH, TFF, TUC, GEN
Starfleet officer who served aboard the USS Enterprise (NCC-1701), USS Enterprise (NCC-1701-A) and USS Reliant.
Clancy (Memory Alpha article) Anne Elizabeth Ramsay (Memory Alpha article) The Emissary (TNG)
Female Starfleet ensign and flight controller aboard the Enterprise-D in 2365.
L. Q. "Sonny" Clemonds (Memory Alpha article) Leon Rippy (Memory Alpha article) The Neutral Zone (TNG)
Human male; 20th century civilian cryogenically frozen and discovered by the USS Enterprise-D.
Zefram Cochrane (Memory Alpha article) Glenn Corbett (Memory Alpha article)

James Cromwell (Memory Alpha article)

Metamorphosis (TOS),
Broken Bow (ENT)
Human male; Earth's inventor of warp drive.
J.M. Colt (Memory Alpha article) Laurel Goodwin (Memory Alpha article) The Cage (TOS)
Yeoman in the original Star Trek pilot.
Kimara Cretak (Memory Alpha article) Megan Cole (Memory Alpha article)

Adrienne Barbeau (Memory Alpha article)

Image in the Sand (DS9),
Shadows and Symbols (DS9),
Inter Arma Enim Silent Leges (DS9)
Being a Romulan Senator, she was a representative of the Romulan empire for a short time aboard Deep Space Nine. She was accused of treason against the Star empire and imprisoned.
Beverly Crusher (Memory Alpha article) Gates McFadden (Memory Alpha article) TNG, GEN, FCT, INS, NEM
Chief Medical Officer aboard the USS Enterprise (NCC-1701-D) and USS Enterprise (NCC-1701-E)
Jack Crusher (Memory Alpha article) Doug Wert (Memory Alpha article) Family (TNG),
Violations (TNG),
Journey's End (TNG)
Deceased Starfleet officer, husband of Beverly Crusher and father of Wesley Crusher. He served aboard the U.S.S. Stargazer under Captain Picard, his friend, but died sometime during its mission. In "Family", when Dr. Crusher retrieved some of his things from storage, the label on the travel case lists him as "lieutenant commander", although the rank insignia on his old uniform indicates otherwise (lieutenant junior grade). Jack Crusher recorded a video message to his son Wesley during his infancy, to be viewed when he was older. Jack intended this to begin a series of pre-recorded video messages to Wesley, but because of his death, he only ever got to make one message.
Wesley Crusher (Memory Alpha article) Wil Wheaton (Memory Alpha article) TNG, NEM
Enterprise-D civilian (crew family member), then Star Fleet Academy cadet
Crystalline Entity (Memory Alpha article) None Datalore (TNG),
Silicon Avatar (TNG)
Life form that destroyed colonies on Omicron Theta and other planets. Conspired with Lore in attempt to destroy life on the Enterprise-D. Destroyed by the mother of one of its victims.
Jal Culluh (Memory Alpha article) Anthony De Longis (Memory Alpha article) Basics Part II (VOY),
State of Flux (VOY)
First Maje, or leader, of the Kazon-Nistrim, one of the various warring sects of the Kazon race who inhabit the farthest region of the Delta Quadrant on the other side of the Milky Way Galaxy.


Character Actor Episodes
Jenna D'Sora (Memory Alpha article) Michele Scarabelli (Memory Alpha article) In Theory (TNG)
Starfleet lieutenant (j.g.) and Enterprise-D security officer who fell in love with Data.
Damar (Memory Alpha article) Casey Biggs (Memory Alpha article) Return to Grace (DS9) recurring thereafter
Cardassian military officer. As a glinn, he served under Gul Dukat aboard the freighter Groumall, and later as Legate Dukat's aide when the Cardassian Union joined the Dominion. After Dukat's mental breakdown, following Starfleet's recapture of Starbase Deep Space 9, Damar was promoted to gul, and later to legate. As leader, he learned that the Dominion was merely using the Cardassians in its effort to conquer the Alpha Quadrant, so he switched sides and encouraged his people to fight the Dominion. However, while fighting beside Commander Kira Nerys to retake Cardassia Prime, Damar was killed in action.
Dammar (Memory Alpha article) Kenneth Tigar (Memory Alpha article) Displaced (VOY)
Chief operative of the Nyrians; translocated the Voyager crew and took command of the ship.
Damron (Memory Alpha article) Jeffrey Dean Morgan (Memory Alpha article) Carpenter Street (ENT)
Xindi Reptilian scientist.
Darhe'el (Memory Alpha article) Harris Yulin (Memory Alpha article) Duet (DS9)
Cardassian gul and leader of the Gallitep labor camp on Bajor during the Cardassian Occupation. He was dubbed the "Butcher of Gallitep" because of all the atrocities committed there under his command Bajor.
Arne Darvin (Memory Alpha article) Charlie Brill (Memory Alpha article) The Trouble with Tribbles (TOS),
Trials and Tribble-ations (DS9)
In "The Trouble With Tribbles", Darvin is a Klingon who poses as a Federation official to sabotage Federation attempts to colonize Sherman's Planet. A tribble, sensitive to Klingons, hints at his true identity, which is confirmed by Dr. Leonard McCoy. Darvin is arrested.

According to dialog in "Trials and Tribble-ations", Klingon intelligence subsequently turned its back on Darvin, who spent the next 100 years posing as a human being merchant going by the name "Barry Waddle".

Brill reprised the role for "Trials and Tribble-ations", in which Darvin gains passage from Cardassia to Bajor aboard the USS Defiant. Darvin uses the Bajoran Orb of Time to send the ship back to the time and place depicted in "The Trouble With Tribbles." Intent on exacting revenge on James T. Kirk, he plants a bomb in a tribble; the Defiant's crew prevents Kirk's murder and captures Darvin.

Data (Memory Alpha article) Brent Spiner (Memory Alpha article) TNG,
Android – second officer of the Enterprise D.
Dathon (Memory Alpha article) Paul Winfield (Memory Alpha article) Darmok (TNG)
Tamarian captain, the first of his race to successfully establish communications between his species and the Federation.
Carmen Davila (Memory Alpha article) Susan Diol (Memory Alpha article) Silicon Avatar (TNG)
Senior member of the Malona IV project, died when the Crystalline Entity attacked the colony.
Dax (symbiont) (Memory Alpha article) None Invasive Procedures (DS9)
Trill symbiont, over 300 years old in the 24th century.
Audrid Dax (Memory Alpha article) Armin Shimerman (Memory Alpha article) Facets (DS9)
Joined Trill; fourth host of Dax symbiont.
Curzon Dax (Memory Alpha article) Frank Owen Smith (Memory Alpha article)

Rene Auberjonois (Memory Alpha article)

Emissary (DS9),
Facets (DS9)
Trill male; seventh host of Dax symbiont (before Jadzia).
Emony Dax (Memory Alpha article) Chase Masterson (Memory Alpha article) Facets (DS9)
Joined Trill female; third host of Dax symbiont.
Ezri Dax (Memory Alpha article) Nicole de Boer (Memory Alpha article) DS9 Season 7
Joined Trill female; ninth host of Dax symbiont; Starfleet officer, and counselor aboard DS9. Formerly Ezri Tigan.
Jadzia Dax (Memory Alpha article) Terry Farrell (Memory Alpha article) DS9 Seasons 1–6
Joined Trill female; eighth host of Dax symbiont; Starfleet officer, and science officer aboard DS9 from 2371 to 2374.
Joran Dax (Memory Alpha article) Jeff Magnus McBride (Memory Alpha article)

Leigh J. McCloskey (Memory Alpha article)
Avery Brooks (Memory Alpha article)

Equilibrium (DS9),
Facets (DS9),
Field of Fire (DS9)
Joined Trill male; sixth host of Dax symbiont. Formerly Joran Belar.
Lela Dax (Memory Alpha article) Nana Visitor (Memory Alpha article) Facets (DS9)
Joined Trill female; first host of Dax symbiont.
Tobin Dax (Memory Alpha article) Colm Meaney (Memory Alpha article) Facets (DS9)
Joined Trill male; second host of Dax symbiont.
Torias Dax (Memory Alpha article) Alexander Siddig (Memory Alpha article) Facets (DS9)
Joined Trill male; fifth host of Dax symbiont.
Yedrin Dax (Memory Alpha article) Gary Frank (Memory Alpha article) Children of Time (DS9)
Trill; descendant of Jadzia Dax and host of the Dax symbiont in an alternate timeline.
Richard Daystrom (Memory Alpha article) William Marshall (Memory Alpha article) The Ultimate Computer (TOS)
Human male; creator of M5 multitronic computer system.
Decius (Memory Alpha article) Lawrence Montaigne (Memory Alpha article) Balance of Terror (TOS)
A proud young Romulan officer who served aboard the Praetor's flagship Bird-of-Prey in 2266. He dispatched a coded message to the Praetor while the ship was under cloak, thereby breaking the "rule of silence." For this infraction, he was reduced two steps in rank. Later, he was ordered to place a nuclear warhead with a proximity fuse among the debris that was to be jettisoned from the ship. This maneuver succeeded in severely damaging the Enterprise. Decius was viewed by the ship's elder Centurion as having powerful friends who may not appreciate his being demoted, and which could mean danger for the ship's Commander.
Willard Decker (Memory Alpha article) Stephen Collins (Memory Alpha article) TMP
Captain of the USS Enterprise before joining with V'ger, son of Commodore Matt Decker[5]. Decker's basic character outline was originally developed as part of Star Trek: Phase II before that project became The Motion Picture.[6] Some of this character's elements are similar to those of William Riker, the second in command of the USS Enterprise-D in Star Trek: The Next Generation.[6]
Matt Decker (Memory Alpha article) William Windom (Memory Alpha article) Doomsday Machine (TOS)
The captain of the starship U.S.S Constellation until its crew were killed by an extraterrestrial-created "planet eater" Ultimate Weapon. Decker tried to kill the planet 'eater' by going on a suicide mission with one of the shuttles belonging to the USS Enterprise. He failed, but analysis of his attempt provided inspiration for the final solution used to defeat the machine.[7]
Degra (Memory Alpha article) Randy Oglesby (Memory Alpha article) The Xindi (ENT)
recurring thereafter
Primate representative on the Xindi Council; scientist who supervised construction of the Xindi superweapon.
DeSalle (Memory Alpha article) Michael Barrier (Memory Alpha article) The Squire of Gothos (TOS),
This Side of Paradise (TOS),
Catspaw (TOS)
Starfleet lieutenant of French descent. DeSalle served as the Enterprise's navigator ("The Squire of Gothos"), botanist ("This Side of Paradise") and assistant chief engineer ("Catspaw"). In "The Squire of Gothos," DeSalle is part of the landing party that encounters Trelane. In "This Side of Paradise," DeSalle discovers that the colonists on Omicron Ceti III are the only life forms to survive exposure to the planet's Berthold rays. He also performs a quantitative analysis of the crops being grown by the colonists. In "Catspaw", DeSalle commands the Enterprise while Captain Kirk, Commander Spock and Lieutenant Commander Scott are being held prisoner on the surface of Pyris VII. He directs the crew's effort to pierce an alien force field to rescue the landing party. (Conjecture: The Star Trek Concordance, by Bjo Trimble, lists his first name as "Vincent.")
Stefan DeSeve (Memory Alpha article) Barry Lynch (Memory Alpha article) Face of the Enemy (TNG)
Former Starfleet ensign who defected to Romulus. He returns to the Federation after becoming disillusioned with the Romulans. He also relays a message from Ambassador Spock that the Enterprise-D must rendezvous with a Corvallen freighter, which is supposed to be carrying Romulan vice proconsul M'ret and his two top aides, who are defecting to the Federation.
Klim Dokachin (Memory Alpha article) Graham Jarvis (Memory Alpha article) Unification (TNG)
Zakdorn; quartermaster and administrator of the Federation Surplus Depot Z15.
Guruk Dolim (Memory Alpha article) Scott MacDonald (Memory Alpha article) The Xindi (ENT)
recurring thereafter
Reptilian regimental commander and representative on the Xindi Council. He hijacked the Xindi superweapon.
Jose Dominguez (Memory Alpha article) None The Man Trap (TOS)
Starfleet officer and "space commander" of the starship base on Corinth IV. He requests information regarding the Enterprise's delay at Planet M-113; he says the starship has "supplies he urgently needs."
Donatra (Memory Alpha article) Dina Meyer (Memory Alpha article) NEM
Romulan commander of the I.R.W. Valdore. She attempts to ingratiate herself to Praetor Shinzon by flirting with him, but he prefers that she demonstrate her allegiance by watching Commander Suran, whose impatience and lack of respect have given Shinzon pause. Donatra fears that a war with the Federation will mark Romulan children for generations to come. She eventually rejects Shinzon and fights with the Enterprise-E against the Reman Warbird Scimitar. Although the Valdore is severely damaged in battle, Donatra is able to offer aid to the ram-damaged Enterprise after the Scimitar is destroyed.
Sarina Douglas (Memory Alpha article) Faith Salie (Memory Alpha article) Statistical Probabilities (DS9)
Chrysalis (DS9)
Human female whose genetic engineering went wrong and caused her to be cataleptic for several years.
Drea (Memory Alpha article) Lezlie Dalton (Memory Alpha article) By Any Other Name (TOS)
Female Kelvan who pilots the Enterprise through the Galactic Barrier on its way to the Andromeda Galaxy.
Duchamps (Memory Alpha article) Michael Dorn (Memory Alpha article) Our Man Bashir (DS9)
An assistant to Dr. Hippocrates Noah in Julian Bashir's secret agent program. Due to a transporter malfunction, Duchamp appeared as Worf.
Skrain Dukat (Memory Alpha article) Marc Alaimo (Memory Alpha article) Emissary (DS9) recurring thereafter
Cardassian gul. Prefect of Bajor during the Cardassian Occupation; Commander of Terok Nor. Father of Tora Ziyal, and head of the Cardassian Union under The Dominion until Ziyal's death.
Duras, son of Ja'rod (Memory Alpha article) Patrick Massett (Memory Alpha article) Sins of the Father (TNG),
Reunion (TNG)
Klingon male. The House of Duras was a notably aggressive and dishonest dynasty of the Klingon Empire. Included two sisters: Lursa and B'Etor.
Duras, son of Toral (Memory Alpha article) Daniel Riordan (Memory Alpha article) Judgment (ENT),
Bounty (ENT),
The Expanse (ENT)
Klingon male, sent to apprehend Jonathan Archer and destroy the Enterprise.


Character Actor Episodes
Amelia Earhart (Memory Alpha article) Sharon Lawrence (Memory Alpha article) The 37s (VOY)
Human female; abducted from Earth in 1937; found cryogenically frozen in the Delta Quadrant by the Voyager crew.
Michael Eddington (Memory Alpha article) Kenneth Marshall (Memory Alpha article) The Search (DS9)
recurring thereafter
Starfleet lieutenant commander and chief of Starfleet security on Starbase Deep Space 9, beginning in late 2370. He later defected to join the Maquis.
Ee'Char (Memory Alpha article) Craig Wasson (Memory Alpha article) Hard Time (DS9)
Male; Miles O'Brien's imaginary cellmate during his time-compressed simulation of incarceration.
Albert Einstein (Memory Alpha article) Jim Norton (Memory Alpha article) The Nth Degree (TNG),
Descent, Part I (TNG)
Holographic reproduction for a game of poker with Data.
Ekoria (Memory Alpha article) Ellen Wheeler (Memory Alpha article) The Quickening (DS9)
Teplan female; afflicted by the blight, the first one to believe that Julian Bashir could find a cure to her condition. She died to the blight, but her baby was born perfectly healthy.
Elaan (Memory Alpha article) France Nuyen (Memory Alpha article) Elaan of Troyius (TOS)
Dohlman of Elas. Her planet's Council of Nobles offered her in marriage to the ruler of Troyius, a neighboring planet in the Tellun Star System, to prevent the escalation of hostilities between the two worlds. En route to Troyius on the Enterprise, Elaan stabs Ambassador Petri of Troyius for being in her quarters without permission. Later, when Elaan sheds tears (which act as a "super love potion") because she feels that nobody likes her, Kirk wipes them away and immediately becomes biochemically attracted to her. However, he's able to shake off the effects while in combat with the Klingons. In accordance with his duty, Kirk delivers Elaan to Troyius to be married, although neither is happy at the prospect.
Tam Elbrun (Memory Alpha article) Harry Groener (Memory Alpha article) Tin Man (TNG)
Betazoid male; had unusually great telepathic ability skilled at making contact with non-humanoid sentient life forms.
Endar (Memory Alpha article) Sherman Howard (Memory Alpha article) Suddenly Human (TNG)
Talarian captain of the Q'Maire whose biological son was killed by humans. In accordance with Talarian customs, he claimed the human boy Jeremiah Rossa as his own son, renaming him Jono. Years later, when Captain Jean-Luc Picard intended to return Jono to his human family, Endar was ready to go to war to retrieve his adopted son.
Enright (Memory Alpha article) James Doohan (Memory Alpha article) The Ultimate Computer (TOS)
Starfleet commodore on the Watchtower-class space station that serves as headquarters for the M5 multitronic unit war games.
Evek (Memory Alpha article) Richard Poe (Memory Alpha article) Journey's End (TNG),
Preemptive Strike (TNG),
Playing God (DS9),
The Maquis (DS9),
Tribunal (DS9)
Caretaker (VOY)
Cardassian gul and commander of the Vetar. A confrontational opponent, appearing in three Star Trek series.


Character Actor Episodes
Kivas Fajo (Memory Alpha article) Saul Rubinek (Memory Alpha article) The Most Toys (TNG)
Zibalian male; kidnapped Data for his collection of priceless artifacts.
Falcon (Memory Alpha article) Mark Yerkes (Memory Alpha article)

Colm Meaney (Memory Alpha article)

Our Man Bashir (DS9)
Hologram; assassin in Julian Bashir's secret agent holo-program. Due to a transporter malfunction, Falcon's physical parameters were temporarily modeled on O'Brien.
Dr. Farek (Memory Alpha article) Ethan Phillips (Memory Alpha article) Ménage à Troi (TNG)
Ferengi male; crewmember of the Krayton, tried using a mind probe on Lwaxana Troi to learn the secret of Betazed telepathy.
John Farrell (Memory Alpha article) Jim Goodwin (Memory Alpha article) The Enemy Within (TOS), Mudd's Women (TOS), Miri (TOS)
Human Male; he served as navigator in TOS: "The Enemy Within" and "Mudd's Women" and as the relief communications officer in TOS: "Miri".
Female Changeling (Memory Alpha article) Salome Jens (Memory Alpha article) The Search (DS9) recurring thereafter
Unnamed Changeling who helps lead the Dominion's invasion of the Alpha Quadrant.
Karen Farris (Memory Alpha article) Courtney Peldon (Memory Alpha article) Valiant (DS9)
Human female; Red Squad cadet appointed First Officer of the USS Valiant after the death of Captain Ramirez.
Marla E. Finn (Memory Alpha article) Nora Leonhardt (Memory Alpha article) Eye of the Beholder (TNG)
Starfleet ensign assigned to Utopia Planetia shipyards. Was killed by ex-lover Lieutenant Walter Pierce.
Mr. Flint (Memory Alpha article) James Daly (Memory Alpha article) Requiem for Methuselah (TOS)
Human male; a 6000 year-old immortal, encountered on the planet Holberg 917G. Flint lived as many influential persons in Earth history.
Fitzgerald (Memory Alpha article) Richard Derr (Memory Alpha article) The Mark of Gideon (TOS)
Starfleet admiral who refuses to give Spock permission to violate the planet Gideon's sovereignty and beam down to locate the missing and allegedly kidnapped Captain Kirk. Fitzgerald has no choice because Spock cannot prove that Kirk's life is in danger. (Casting Note: Richard Derr also played Commodore Barstow in "The Alternative Factor." In the interest of continuity, some Star Trek fans have suggested that, since "Fitzgerald" was never named in dialogue, it can be disregarded and "Barstow" retconned in its place. However, "Fitzgerald" is identified in the script and in the ending credits, so, regardless of the oversight regarding the actor's two roles, canon demands that "Fitzgerald" should stand.)
Fitzpatrick (Memory Alpha article) Ed Reimers (Memory Alpha article) The Trouble With Tribbles (TOS)
Starfleet admiral who ordered Kirk to cooperate fully with Nilz Baris regarding security protection for the quadrotriticale on Deep Space Station K-7.
Vic Fontaine (Memory Alpha article) James Darren (Memory Alpha article) His Way (DS9)
recurring thereafter
Hologram; a holodeck entertainer, used as counselor by various crewmembers of Deep Space Nine.
Fujisaki (Memory Alpha article) None Inter Arma Enim Silent Leges (DS9)
Starfleet vice admiral and deputy chief of Starfleet Intelligence until 2374, when he died. Section 31 believed that Koval, the Romulan chairman of the Tal Shiar, was involved in his death, but there was no proof.


  1. ^ Joanna Peart, The Journal (July 22, 2004). "Beam me back Scotty". p. 46.
  2. ^ St. Joseph News-Press, Spotlight (Feb. 2, 1974). "New Role on Show". p. 12.
  3. ^ Alison L. Smith, Chicago Sun-Times (November 30, 1986 ). "The Vulcan mind probe". p. 6.
  4. ^ Star Trek Profile: Geordi La Forge
  5. ^ "Willard Decker". Retrieved 1 July 2010. 
  6. ^ a b Okuda, Mike and Denise Okuda, with Debbie Mirek (1999). The Star Trek Encyclopedia. Pocket Books. ISBN 0-671-53609-5. 
  7. ^ The Star Trek Encyclopedia

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