Aaron had been taken over by the unknown alien intelligence that infiltrated Starfleet Command in 2364. TNG Conspiracy.

Ray Reinhardt

In 2373, Chief O'Brien ordered Abdon and Nori to install new inertial coupling ports in the cargo bays. DS9 The Assignment.

TOS Operation: Annihilate!.

Hars Adislo wrote a research paper on thermionic transconductance, which he presented at the Nel Bato Conference in 2374. Star Trek: Insurrection.

John Hostetter

He was killed in action in 2374 during the Dominion War. DS9 In the Pale Moonlight.

Alans, a specialist in volcanology and geomechanics, assisted in the geological survey of planets in the Selcundi Drema sector in 2365. TNG Pen Pals.

Whitney Rydbeck

He was the father of Cadet Joshua Albert. Lt. Cmdr. Albert was present at the inquiry into his son's death in 2368. TNG The First Duty.

Ed Lauter

He was part of Starfleet Academy's Nova Squadron and killed in a flight accident in 2368. Although preliminary testimony pointed to pilot error on the part of Albert as the cause of his death, Cadet Wesley Crusher later testified that the squadron was attempting to perform a Kolvoord Starburst at the time of the accident. The attempt at the prohibited manoeuvre was blamed for the cadet's death. TNG The First Duty.

TOS Where No Man Has Gone Before.

Lloyd Haynes

Star Trek IV: The Voyage Home.

Madge Sinclair
* This character's names comes from Vonda N. McIntyre's novelization of "Star Trek IV: The Voyage Home".

She went missing in action in 2374 during the Dominion War. DS9 In the Pale Moonlight.

She piloted the ship during the mission at Gamelan V in 2367. TNG Final Mission. Allenby was at the conn when the ship encountered a school of two-dimensional creatures while en route to planet T'lli Beta. TNG The Loss.

Mary Kohnert

ENT Unexpected.

Amantes died in the line of duty while serving aboard the U.S.S. Equinox, a Starfleet vessel stranded in the Delta Quadrant. VOY Equinox, Part 1.

Amaro attended Starfleet Academy with Stolzoff, and the two were good friends. In 2373, Amaro was part of a salvage team sent from DS9 to the abandoned Cardassian station Empok Nor. Amaro was killed at Empok Nor by Elim Garak when Garak suffered from the effects of a powerful psychotropic drug. DS9 Empok Nor.

Jeffrey King

Amasov and his ship Endeavour had an encounter with the Borg. After the encounter, Amasov said, "It is my opinion that the Borg are as close to pure evil as any race we've ever discovered." VOY Scorpion.

She was assigned to the conn during the Enterprise-D's encounter with a Cytherian probe in 2367. TNG The Nth Degree.

Page Leong

VOY Workforce.

He was the first captain of the original Starship Enterprise. April assumed command of the ship when it was launched in 2245 and helmed the Enterprise's first five-year mission of deep-space exploration. He was married to Sarah April. In the late 2260s he became a Federation ambassador-at-large. TAS The Counter-Clock Incident.

Voice: James Doohan
Robert April was the name of the ship's commander in Roddenberry's first proposal for Star Trek, written in 1964. The name was later changed to Christopher Pike. TAS finally established that April was the captain of the Enterprise before Pike.
Image from Startrekanimated.com.

TAS The Counter-Clock Incident.

Voice: Nichelle Nichols
Image from Startrekanimated.com.

He was killed in 2369 after investigating a security breach. Neela, who had planned to assassinate Vedek Bareil, was preparing her escape route when Ensign Aquino caught her in the act. Neela killed the ensign, then tried to conceal the crime by placing him into a conduit where energy bursts would reduce the body to ashes. DS9 In the Hands of the Prophets.

Mother of Commander Valerie Archer. She and her husband served in Starfleet. VOY In the Flesh.

Father of Commander Valerie Archer. He and his wife served in Starfleet. VOY In the Flesh.

ENT.

Scott Bakula

Commander Archer, whose parents were both starship officers, served at Starfleet Headquarters in 2371. A re-creation of Archer was part of a training facility by Species 8472 in the Delta Quadrant in 2375 in preparation for an intelligence-gathering program against the Federation. The replica of Archer, who was actually an 8472 individual, befriended Chakotay, finding him attractive despite the enormous differences in their species. VOY In the Flesh.

Kate Vernon

TAS One of Our Planets Is Missing. TAS The Lorelei Signal. He was on bridge duty during the Enterprise's mission to planet Phylos. TAS The Infinite Vulcan. TAS Once Upon a Planet. TAS Mudd's Passion. TAS The Terratin Incident. TAS The Ambergris Element. TAS The Eye of the Beholder. TAS The Pirates of Orion. TAS Bem. TAS The Practical Joker. TAS Albatross. TAS How Sharper Than a Serpent's Tooth. TAS The Counter-Clock Incident.

Voice: James Doohan

Argyle worked with the Traveller and Mr. Kosinski during warp drive upgrade tests. TNG Where No One Has Gone Before. Argyle also supervised the assembly and activation of Data's brother, Lore, in the Enterprise-D sickbay. TNG Datalore.
TNG Lonely Among Us.

Biff Yeager

VOY One Small Step.

TNG Descent, Part 2.

Aron was one of the security officer assigned to protect Salia, leader of Daled IV. TNG The Dauphin.

Peter Neptune

In 2372, under orders from Admiral Leyton, Arriaga attached a subspace modulator to the relay satellite on the far side of the Bajoran wormhole to create the appearance that cloaked ships were coming through, feeding Federation fears of an imminent Dominion invasion. When confronted, Arriaga confessed his role in Leyton's conspiracy. Leyton subsequently attempted unsuccessfully to destroy the Starship Defiant to prevent Arriaga returning to Earth. DS9 Paradise Lost.

Arton had, at one time, been romantically involved with Lt. Jenna D'Sora prior to D'Sora's involvement with Data in 2367. TNG In Theory.

In late 2371, Ashmore asked Neelix to prepare macaroni and cheese, so Neelix made Brill cheese from some Grakel milk he had obtained from the planet Napinne, but the bacteria he cultivated for that purpose became host to a virus that infected the ship's bio-neural gel packs. VOY Learning Curve. In 2372, when the crew was hallucinating due to a Bothan attack with a psionic field, Ashmore thought that Neelix was a Kazon and tried to kill him with a knife. VOY Persistence of Vision. On stardate 51501.4, Ashmore received a letter from home via a Starfleet transmission sent through an ancient network of alien relay stations. He filled in for Tuvok at tactical when he had been abducted by Hirogen. VOY Hunters.
VOY Favorite Son.
VOY Retrospect.
He assisted Ensign Kim to expand the holodeck grids when Voyager was under Hirogen control in 2374. VOY The Killing Game, Part 1.
VOY Timeless.
VOY Nothing Human.
VOY Course: Oblivion.
VOY Warhead.
VOY Memorial.
VOY Tsunkatse.
VOY Workforce.
VOY Human Error.
VOY Homestead.

She was killed during an away team mission in the Koinonian ruins in 2366. Aster was killed by a bomb left over from an ancient Koinonian war. Koinonian energy-based life-forms later created a replica of Aster in an offer to care for her orphaned son, Jeremy Aster. TNG The Bonding. In 2368, Cmdr. Riker mentioned Aster, when Worf wanted to commit suicide after he was paralyzed in an accident. TNG Ethics.

Susan Powell

TOS The Deadly Years.

Carolyn Nelson

Lt. Atoa was a friend of Jadzia Dax, and he attended her prewedding party on station DS9 on stardate 51247. While at the party, Atoa performed a traditional Samoan fire knife dance. Atoa and Morn drank too much at the party and fell asleep on the floor, waking up and leaving late the next morning. DS9 You Are Cordially Invited.

Sidney Liufau

He was part of the Starfleet/Maquis away team that searched the Caretaker array for two abducted crewmembers, Harry Kim and B'Elanna Torres. VOY Caretaker. VOY Faces. His quarters aboard Voyager were on deck 7. When a spatial distortion ring being had changed Voyager's layout in 2371, his quarters were nearby Hargrove's, Kyoto's, and Nicolettis quarters, whereas under normal circumstances they would be in on different decks. He was temporarily in command of the Voyager at that time. VOY Twisted. In late 2371, he was present when the senior staff investigated a 1936 Ford which had been discovered adrift in space. He was part of the away team that discovered Amelia Earhart and other humans in stasis chambers on a planet in the Delta Quadrant. He was also part of the security detachment that was looking for aliens on that planet. They were attacked by the inhabitants of the planet but were able to overcome them. VOY The 37's. Neelix helped Ayala to handle the separation from his children. According to Neelix, he missed his boys terribly. VOY Initiations. He was on bridge duty when Voyager made first contact with the Bothans. VOY Persistence of Vision. He was on bridge duty in 2372, when a Kazon-Nistrim vessel attacked Voyager and stole a transporter module. VOY Maneuvers. He was in the mess hall when Quinn, a male Q, brought Capt. Janeway there. Quinn later let all men aboard Voyager, including Ayala, disappear. Ayala and the others were brought back by Q. VOY Deathwish. He attended Crewman Bendera's memorial service in 2372. VOY Alliances. In 2372, he stood guard at the detention cell that held Lon Suder. When Tuvok had lost control of his violent emotions, he knocked Ayala out and tried to execute Suder. VOY Meld. He was on bridge duty when Voyager discovered the Cardassian quot;Dreadnought" missile in 2372. VOY Dreadnought. He filled in for Lt. Tuvok at Tactical, when he was ordered to escort Lt. Paris to the brig for assaulting Lt. Cmdr. Chakotay. VOY Lifesigns.
VOY Tuvix
VOY Basics, Part 1 & 2
Ayala was on bridge duty when Kes, while under the influence of the Ilari warlord Tieran, stole one of Voyager's shuttles. Chakotay ordered him to target phasers at their engine core to knock out propulsion, but the shuttle went to warp before he could execute the order. VOY Warlord.
VOY Distant Origin.
VOY Worst Case Scenario.
VOY The Gift.
He was shot down by Seven when she tried to escape from the ship to re-join the Borg collective. VOY The Raven. In 2374, Ayala stood guard at the detention cell that held Borg drone Seven of Nine. VOY Waking Moments.
He was on bridge duty when members of the bridge crew got their first letters from home through an ancient network of alien relay stations in 2374. VOY Hunters.
VOY Prey.
VOY The Omega Directive.
VOY Unforgettable.
VOY Demon.
VOY One.
VOY Hope and Fear.
VOY Night.
VOY Extreme Risk.
VOY Once Upon a Time.
VOY Nothing Human. VOY Dark Frontier. VOY The Fight. VOY Think Tank. VOY Juggernaut. VOY Someone to Watch Over Me. VOY 11:59. VOY Relativity. VOY Equinox, Part 1. VOY Survival Instinct. VOY Tinker, Tenor, Doctor, Spy. VOY Riddles. VOY Dragon's Teeth. VOY One Small Step. VOY The Voyager Conspiracy. VOY Pathfinder. VOY Fair Haven. VOY Memorial. VOY Ashes to Ashes. VOY Good Shepherd. VOY Live Fast and Prosper. VOY Fury. VOY Life Line. VOY Unimatrix Zero. VOY Drive. VOY Repression. VOY Flesh and Blood. VOY Shattered. VOY Lineage. VOY Repentance. VOY Prophecy. VOY The Void. VOY Workforce. VOY Q2. VOY Natural Law. VOY Homestead. VOY Renaissance Man. VOY Endgame.

Tarik Ergin
Tarik Ergin also played Satan's robot in VOY Bride of Chaotica!. Ayala was a lieutenant in earlier episodes, but was referred to as an ensign in VOY The Gift.