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Multiple realities
(covers information from several alternate timelines)

List of unnamed Deep Space 9 Starfleet personnel.

Individuals who served in multiple or unknown divisions are listed below:

Command and operations ensign

A command division ensign in ops

This ensign was stationed aboard DS9 in 2369.

He initially served in the command division, where he was assigned to ops during the Cardassian attack, under the command of Gul Jasad, and later assisted Chief O'Brien in repairs. He was later among the DS9 residents who were evacuated. (DS9: "Emissary")

He was on duty when the Bajoran Kohn-Ma terrorist Tahna Los was beamed aboard from his scout ship and Commander Benjamin Sisko had to deal with the pursuing Cardassian warship Aldara's commander, Gul Danar. (DS9: "Past Prologue")

He visited the Promenade and was later on duty in ops when Odo faced charges of murder. After he carried chairs in Keiko O'Brien's new school on board the station, he accompanied Commander Sisko to the Promenade to calm down the mob which wanted Odo's death. (DS9: "A Man Alone")

He was present in ops when Chief O'Brien fixed the navigational computer and later when Chief O'Brien tried to talk to Major Kira Nerys. (DS9: "Babel")

...and serving in the operations division

He later transferred to the operations division, where he continued to serve in ops when the crew made first contact with Tosk, and had to later deal with Q and power fluctuations. (DS9: "Captive Pursuit", "Q-Less")

After he worked in ops he visited Quark's and was suspiciously eyed by Constable Odo. (DS9: "Dax")

He was also present when Kobliad Security officer Ty Kajada talked about her experiences with the criminal scientist Rao Vantika and when the senior staff of Deep Space 9 vanished while the Wadi visited the station. (DS9: "The Passenger", "Move Along Home")

He took part in a dabo game at Quark's while Quark made a business deal with the twined Miradorn, Ah-Kel and Ro-Kel. (DS9: "Vortex")

He served on ops when Doctor Bashir informed Commander Sisko that Kai Opaka arrived at the station, and later when Major Kira informed Commander Sisko about the arriving Paqu delegation. (DS9: "Battle Lines", "The Storyteller")

He also served in ops when Minister Toran had a meeting with Commander Sisko in his office and Major Kira later joined the two and when the crew and residents experienced their imaginations became reality. (DS9: "Progress", "If Wishes Were Horses")

He was present in Quark's Bar when a Dopterian thief robbed several patrons, including Lwaxana Troi. Later he served in ops when an alien probe, dubbed "Pup" by Chief O'Brien, affected the station's computer systems. (DS9: "The Forsaken")

This recurring Starfleet officer was played by an unknown actor.

Command and operations lieutenant

A lieutenant in 2371

This Starfleet lieutenant served in the operations division on Deep Space 9 for several years. Prior to the operations division he was assigned to the command division for a some time.

He visited Quark's bar in 2372 and later talked to Morn at the bar. (DS9: "Rules of Acquisition")

In 2371 he was among the group of Starfleet officers, Bajorans, and civilians who listened to Quark when he told the story how he killed the Klingon Kozak. Later he had a drink at the Replimat and Quark's and played dabo. (DS9: "The House of Quark")

He was sitting at a table in the Replimat behind Major Kira and Odo where he talked to a Bajoran officer and two civilians while Tiron approached Kira and Odo. He later passed Tiron at Quark's when Tiron told Quark about his request, a "special holo-program". He played dabo at the dabo wheel at Quark's when Quark announced Major Kira as his one millionth customer. He later passed Kira on the second level of the Promenade when she headed into Quark's to get rid of Quark and his holo-imager. (DS9: "Meridian")

He served aboard the USS Defiant when Commander Sisko, Lieutenant Dax, and Doctor Bashir were accidentally beamed through time and changed the history of the Federation. (DS9: "Past Tense, Part I")

In 2373, he guarded the infirmary when Dukat entered to see Sisko, O'Brien, and Odo in Klingon disguise. (DS9: "Apocalypse Rising")

He also served as guard at the airlock when Kai Winn arrived at the station. (DS9: "Rapture")

He had a drink at Quark's when Odo first met Arissa. (DS9: "A Simple Investigation")

In 2373 he served in the engine room aboard the Defiant when Yedrin Dax and Jadzia Dax worked on a way to save the Defiant crew and the Gaia inhabitants. He later visited his descendants on the planet's surface. (DS9: "Children of Time")

He visited Quark's and played a game at the dabo table. (DS9: "Blaze of Glory")

A lieutenant in 2373

In 2373 he manned the helm of the Defiant in a battle against the Dominion. He listened to Captain Sisko's speech and left Deep Space 9 when the retreat of Starfleet was ordered. (DS9: "Call to Arms")

He served aboard the Defiant during the war between the Dominion and Starfleet and was among the crewmembers who were successful in their mission to destroy a Dominion facility near the Argolis Cluster. (DS9: "Behind the Lines")

He was a guest on Jadzia Dax's bachelorette party. (DS9: "You Are Cordially Invited")

He attended the memorial for Morn from outside of Quark's in 2374 and was later a guest in Quark's. (DS9: "Who Mourns for Morn?")

A holographic recreation of him was part of Luther Sloan's holo-program in which he tested the loyalty of Julian Bashir. (DS9: "Inquisition")

Alongside Broik and several others he came out of Quark's and watched the first kiss of Odo and Kira on the Promenade. (DS9: "His Way")

After he visited Quark's he served aboard the Defiant during the first Battle of Chin'toka. He was also present in ops when Captain Sisko left the station after the death of Jadzia Dax. (DS9: "Tears of the Prophets")

In 2375, he returned aboard the Defiant from a patrol mission and was shortly after seen in civilian clothing passing Kira and Odo on the Promenade. Later he visited Quark's. (DS9: "Image in the Sand")

Off duty he visited the Replimat shortly after Ezri Dax came aboard the station. (DS9: "Afterimage")

He passed Sarina Douglas and Doctor Bashir on the second level of the Promenade and was later watching Sarina playing a dabo game hosted by M'Pella. (DS9: "Chrysalis")

He was working on the bridge of the Defiant when the ship was attacked by Jem'Hadar battle cruisers in orbit of AR-558. (DS9: "The Siege of AR-558")

He visited Quark's shortly before Colonel Kira was abducted by Vedek Fala. (DS9: "Covenant")

A lieutenant in 2375

In 2375 he visited Quark's Bar and witnessed how Ezri Dax attacked Ensign Bertram. Later, when he was sitting in his quarters, Ezri Dax pointed her TR-116 rifle on him while being influenced by Joran Dax. (DS9: "Field of Fire")

He was on the Promenade when the Changeling Laas came aboard and transformed himself into fog following a deadly discussion with two Klingons. (DS9: "Chimera")

He was watching the senior officers walking into Quark's during their mission saving Vic Fontaine. (DS9: "Badda-Bing, Badda-Bang")

He enjoyed a drink at Quark's Bar and was passed by Garak and Doctor Bashir on their way to the Replimat. (DS9: "Inter Arma Enim Silent Leges")

He visited Quark's Bar while Ezri Dax and Worf were missing. (DS9: "Strange Bedfellows")

He was stationed aboard the Defiant and had to leave the ship by using escape pods during the second Battle of Chin'toka. (DS9: "The Changing Face of Evil")

He was seen on the Promenade shortly before he witnessed Brunt's behavior at Quark's. Later he passed Ezri Dax in a corridor, carrying a case. (DS9: "The Dogs of War")

He served aboard the Defiant during the final battle against the Dominion in 2375 and manned a bridge station. (DS9: "What You Leave Behind")

This recurring lieutenant was played by regular background actor Dan Magee who received no credit for his appearances.

Female officer

Aboard the Defiant

This Starfleet officer served in the command division, operations division, and sciences division aboard Deep Space 9 in the 2370s.

She was at Quark's bar when Quark accidently thre darts at Morn. (DS9: "Visionary")

She was talking to a Bajoran woman at the second level at Quark's when she was passed by Doctor Bashir and Keiko O'Brien while the two were talking about Miles and his return on the station. (DS9: "Hard Time")

She had lunch at the mess hall aboard the Defiant and was one of the security officers who "welcomed" the renegade Jem'Hadar aboard the Defiant and later beamed down to the surface of Vandros IV to destroy the Iconian gateway. (DS9: "To the Death")

A civilian at Quark's

Off duty, she visited Quark's bar in 2373 and shared a drink with another bar patron. (DS9: "Apocalypse Rising")

She had a drink at the replimat when Grilka arrived on Deep Space 9 in 2373. (DS9: "Looking for par'Mach in All the Wrong Places")

Wearing the command division uniform and armed with a phaser rifle, she was walking down the Promenade when Captain Sisko ordered battle stations. Later she was among the Starfleet personnel who were evacuated from the station. (DS9: "Call to Arms")

In the command division

She was present in the mess hall aboard the Defiant when Captain Sisko conducted a ritual – he took a discharged power cell that had been used in the phaser array and layed it on a rack on the mess hall wall and made a short speech. (DS9: "Behind the Lines")

Seven months into the Dominion War she still served under Captain Sisko aboard the Defiant. (DS9: "A Time to Stand")

This recurring Starfleet officer was played by background actress Steph Silvestri who received no credit for her appearances.

Further appearances

Sciences and operations officer

This Starfleet science officer was stationed on board Deep Space 9 between 2369 and 2375. He was mainly assigned to the science division, but occasionally joined the command division and operations division of the station. He was sometimes on duty on OPS and served also on the USS Defiant. He was also seen several times in civilian clothing and was a frequent guest in Quark's Bar.

He visited Quark's Bar when Kira Nerys and Chief O'Brien closed the establishment and the Cardassian officers had to leave and take their latinum with them and witnessed Odo's talks with the Duras sisters who, after they arrived on the station, refused to give their weapons away. (DS9: "Emissary", "Past Prologue")

He was seen talking to a woman near an airlock in which three Federation members were imprisoned by accident while Chief O'Brien had a discussion with Captain Jaheel. (DS9: "Babel")

He visited the Promenade and passed the Replimat while the USS Enterprise-D docked at Deep Space 9 and Worf and Geordi La Forge had lunch at the Replimat. (TNG: "Birthright, Part I")

He was a guest at Quark's when Q created a boxing match between himself and Commander Sisko and while Grand Nagus Zek visited the station for the first time. (DS9: "Q-Less", "The Nagus")

He was a frequent visitor on the Promenade and witnessed Chief O'Brien's anger against a stubborn Bajoran vendor, the arrival of a group of orthodox Bajorans, the destruction of the school by a bomb, Vedek Winn Adami's visit to the aftermath, and the assassination attempt on Vedek Bareil by Neela. (DS9: "In the Hands of the Prophets")

He was on duty on the Promenade shortly before he spent his free time as a guest in Club Martus. (DS9: "Rivals")

He was on duty in the infirmary and participated in the treatment of Garak and his cranial implant along Doctor Bashir and nurse Jabara. He later was in Garak's quarters to tend to him and assist Bashir. (DS9: "The Wire")

He was sitting at one of the tables near the dabo wheel in Quark's when Major Kira was forced to enjoy herself by CMO Julian Bashir. Later, he walked past Kira and William T. Riker after the two met on the Promenade. (DS9: "Defiant")

He visited a shop on the Promenade and joined later fellow crewmembers in Quark's when the brawl between the Klingon Intelligence officers and the Romulans started. He escaped the brawl and visited the Promenade shortly after this incident. (DS9: "Visionary") Shortly after this incident he visited the Promenade and witnessed the destruction of Garak's tailor shop. (DS9: "Improbable Cause") During the following mission into the Gamma Quadrant, he served on the Defiant bridge and witnessed the Romulan/Cardassian attack in the Omarion Nebula. (DS9: "The Die is Cast")

As a security officer...

He visited Quark's shortly before Lieutenant Commander Worf came on board the station. Later he reacted when the red alert resounded. Later he was temporary assigned to the security division and served alongside another security officer as guard for the Detapa Council. He was wounded in the shootout and hand-to-hand combat with the Klingons. (DS9: "The Way of the Warrior")

In an alternate timeline in 2372, he attended the memorial service for Benjamin Sisko on the Promenade. (DS9: "The Visitor")

He was on board the Defiant in 2372 during the meeting with the Karemma in the Gamma Quadrant and had to leave sickbay. Shortly after this the whole deck 2 was closed and locked because of a hull breach. After the Jem'Hadar attack cruiser were destroyed he rescued Dr. Bashir and Lt. Cmdr. Dax. (DS9: "Starship Down")

The same year he witnessed the strange appearance of the wormhole from the second level of the Promenade. (DS9: "Homefront")

He was among the crewmembers and civilians who carried furniture into Quark's after Quark left all of his property to Brunt and the FCA. (DS9: "Body Parts")

He was talking to a female Bajoran officer when he was walking on the Promenade and passed Major Kira and Gul Dukat. (DS9: "Apocalypse Rising")

He was working in a cargo bay and transported some containers. (DS9: "A Simple Investigation")

It is possible that the character in this episode who was played by Demonbreun was a different character because he wore civilian clothing and looks more like a member of the freighter personnel.

In 2373 he was aboard the Defiant when the crew detected the planet Gaia. He served on the bridge. (DS9: "Children of Time")

...and a science officer at the helm...

In 2374, he served as helmsman of the Defiant under the command of Jadzia Dax. (DS9: "Favor the Bold")

The same year he witnessed the emotional behavior of Major Kira in ops. (DS9: "Wrongs Darker Than Death or Night")

He was one of the officers who studied the weekly casualty reports from Starfleet in the wardroom. (DS9: "In the Pale Moonlight")

...and off duty.

He was off duty on the Promenade when Odo and Kira had their first kiss. (DS9: "His Way")

After he visited Quark's he served aboard the Defiant during the first Battle of Chin'toka. Following the death of Jadzia Dax the Defiant returned to Deep Space 9. He was on ops when Captain Sisko left the station. (DS9: "Tears of the Prophets")

He returned to Deep Space 9 aboard the Defiant in early 2375 and was reading the latest casualty report in the wardroom. (DS9: "Image in the Sand")

He joined fellow crewmembers at Quark's and was standing at the entrance when Quark advised Ezri Dax about her relationship to Worf. (DS9: "Once More Unto the Breach")

He was working on ops when Captain Sisko learned about the undercover mission of Miles O'Brien. (DS9: "Prodigal Daughter")

He had a drink at Quark's and stood next to Morn shortly before Quark and Rom smuggled a cloaking device to the mirror universe station Terok Nor. (DS9: "The Emperor's New Cloak")

When security found Hector Ilario dead in his quarters, he was one of the officers who secured the area and the corridor. (DS9: "Field of Fire")

He was working in ops when the senior staff talked about a plan to help Vic Fontaine. (DS9: "Badda-Bing, Badda-Bang")

He visited the Replimat and had a drink with a Bajoran officer while Garak and Dr. Bashir spoke about the diplomatic mission to Romulus. (DS9: "Inter Arma Enim Silent Leges")

He was working on ops when Kai Winn visited Captain Sisko in his office. (DS9: "'Til Death Do Us Part")

He was also present in Quark's when Miles O'Brien and Julian Bashir built their Alamo model at the bar. (DS9: "The Changing Face of Evil")

He was on duty on ops when Kira Nerys received her orders from Captain Sisko to work with Damar and when the "new" USS Defiant arrived at the station. (DS9: "When It Rains...", "The Dogs of War")

This recurring officer was played by regular background performer Brian Demonbreun who appeared throughout the run of Deep Space Nine, but was never credited.
In most of his appearances he wore a science division uniform but in several episodes he was also seen in a command division uniform or in a security division uniform. Demonbreun said he owned two uniforms like most of the background performers.
Lieutenant Andrew Powell, also played by Brian Demonbreun, was seen in the Star Trek: The Next Generation episode "All Good Things...".

Further appearances

Vulcan suspects

These forty seven Vulcans were serving on DS9 at the time of a string of murders committed by Lieutenant Chu'lak. Twenty seven of them had suffered a personal loss, making them likely candidates. (DS9: "Field of Fire")

These Vulcans were only mentioned in dialogue.

Yukon personnel

These Yukon crewmembers were aboard the USS Yukon in 2373 and were killed when the Yukon was destroyed by the Bashir Changeling's bomb. (DS9: "By Inferno's Light")

While they certainly died in the destruction of the Yukon, it is possible they were already dead when the runabout left the station. The script mentions that the crew were dead.