Editing Star Trek: Deep Space Nine (section)

===Main cast===
{| class="wikitable" style="width:100%;"
|-
! style="width:15%;"|Actor !! Character !! Position !! Appearances !! Character's species !! Rank
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| rowspan="2"|[[Avery Brooks]] || [[Benjamin Sisko]] || Commanding Officer || Seasons 1–7 || Human || {{Unbulleted list|Commander (Seasons 1–3)|Captain (Seasons 3–7)}}
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| colspan="5"| Benjamin Sisko is the [[Starfleet]] officer placed in charge of ''Deep Space Nine''. At the start of the series, he is a grieving widower (his wife having been killed by the [[Borg (Star Trek)|Borg]] at the [[Battle of Wolf 359]]) and the father of a preteen son, Jake. He and [[Jadzia Dax]] discover the Bajoran wormhole, which the Bajorans believe is the home of the [[Bajoran Prophets|Prophets]], their gods and protectors. The Bajorans hail Sisko as the Emissary of the Prophets, an exalted religious status that initially makes him uncomfortable, but that he gradually comes to embrace. At the end of the third season, he is promoted to captain, and he eventually becomes a key leader of Federation forces against the Dominion. The seventh season reveals that Sisko's mother was possessed by one of the Prophets long enough to ensure he was born.
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| rowspan="2"| [[René Auberjonois]] || [[Odo (Star Trek)|Odo]] || Chief of Security || Seasons 1–7 || [[Changeling (Star Trek)|Changeling]] || [[Constable]] (unofficial)
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| colspan="5"| Constable Odo is the station's chief of security. He is a Changeling, a liquid life form capable of assuming any shape he wishes, though he normally takes the form of an adult male [[humanoid]]. His origins are initially unknown; he was discovered by the Bajorans some years before the beginning of the series and subjected to painful experimentation until they realized he was sentient. He longs to find his people, but when he finally does, he learns they are the authoritarian rulers of the Dominion. Odo is torn between his longing to be with his people and his opposition to the Dominion's totalitarian imperialism. He comes to love the Bajoran Kira.
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| rowspan="2"| [[Alexander Siddig]] || [[Julian Bashir]] || Chief Medical Officer || Seasons 1–7 || Human || Lieutenant, junior grade (Seasons 1–3)<br />Lieutenant (Seasons 4–7)
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| colspan="5"| Julian Bashir is the station's chief medical officer. Somewhat tactless and arrogant initially, he develops friendships with several of the station's residents, particularly Miles O'Brien and the mysterious Cardassian tailor and ex-spy [[Elim Garak|Garak]]. Later, his high intelligence and physical skill are revealed to be the result of illegal genetic enhancements his parents obtained for him as a child because he was falling behind his classmates. Siddig was credited as Siddig el Fadil, a shortened form of his birth name, for the first three seasons, before adopting the stage name Alexander Siddig, after discovering that viewers did not know how to pronounce his name.<ref>{{cite web|url=http://www.sidcity.net/story-library/trekexpo-062505.shtml |title=Trek Expo Tulsa, Oklahoma |publisher=sidcity.net (official site) |date=June 25, 2005 |access-date=July 8, 2008 |url-status=dead |archive-url=https://web.archive.org/web/20080626111713/http://www.sidcity.net/story-library/trekexpo-062505.shtml |archive-date=June 26, 2008 }}</ref> Siddig continued to be credited as Siddig el Fadil when he directed.
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| rowspan="2"| [[Terry Farrell (actress)|Terry Farrell]] || [[Jadzia Dax]] || Chief Science Officer || Seasons 1–6 || [[Trill (Star Trek)|Trill]] || {{Unbulleted list|Lieutenant (Seasons 1–3)|Lieutenant commander (Seasons 4–6)}}
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| colspan="5"| Jadzia Dax is the station's science officer. A member of the [[Trill (Star Trek)|Trill]] species, the humanoid Jadzia shares a [[symbiosis|symbiotic]] existence with a long-living "symbiont" named [[Dax (Star Trek)|Dax]], who has already experienced seven prior lives "joined" with other Trills. The previous host, [[Curzon Dax]], a larger-than-life diplomat and womanizer, was a mentor and close friend to Sisko. That friendship is continued with Jadzia, whom Sisko familiarly calls "old man". She marries Worf during the show's sixth season. When Terry Farrell declined to renew her contract at the end of that season, her character was killed off, and Ezri Dax was introduced as Dax's next host. 
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| rowspan="2"| [[Cirroc Lofton]] || [[Jake Sisko]] || {{Unbulleted list|Student (Seasons 1–5)|Journalist (Seasons 5–7)}} || Seasons 1–7 || Human || Civilian
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| colspan="5"| Jake is Benjamin Sisko's son. He at first resents the idea of living on an old Cardassian space station, but soon adapts to life on the station and develops a deep friendship with [[Nog (Star Trek)|Nog]], a [[Ferengi]] who is the station's only other resident close to his age. His father wants him to join Starfleet, but Jake yearns to be a writer, eventually becoming a reporter with the Federation News Service. Over the seven seasons, Jake and Nog grow from children into young adults, with storylines showing their rites of passage, successes, and mishaps.
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| rowspan="2"| [[Colm Meaney]] || [[Miles O'Brien (Star Trek)|Miles O'Brien]] || Chief Operations Officer || Seasons 1–7 || Human || Senior chief petty officer
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| colspan="5"| Miles O'Brien is the Chief of Operations, responsible for keeping the station in working order. The character originated as a recurring role on ''The Next Generation''; on ''Deep Space Nine'', he became the first main character on a ''Star Trek'' series to be a [[non-commissioned officer]]. He and Julian Bashir are close friends. He is married to botanist and teacher [[Keiko O'Brien|Keiko]]; they have a daughter, [[Molly O'Brien (Deep Space Nine)|Molly]], and later a son, [[Kirayoshi O'Brien|Kirayoshi]], born in the fifth season. As an "uncomplicated" family man, he is often used by the writers as an "[[everyman]]" character struggling with various science-fictional hardships.
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| rowspan="2"| [[Armin Shimerman]] || [[Quark (Star Trek)|Quark]] || Bar owner || Seasons 1–7 || Ferengi || Civilian
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| colspan="5"| Quark is the proprietor of a bar on ''Deep Space Nine''. Like most Ferengi, he holds the acquisition of [[Profit (economics)|profit]] to be the highest goal, and his frequently shady moneymaking schemes bring him into conflict with Odo. His cynical, profit-driven worldview is often used as a critique or counterpoint to the idealism of the Federation — although he does display a moral code on occasion, electing to save lives at the cost of profit. Sisko considers Quark an anchor to the merchant community and society in general aboard the station. He pressures Quark not to relocate after the Cardassians are driven out, giving him very generous financial terms to stay and keep his business in operation.
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| rowspan="2"| [[Nana Visitor]] || [[Kira Nerys]] || First Officer || Seasons 1–7 || [[Bajoran]] || {{Unbulleted list|Major (Seasons 1–6)|Colonel (Season 7)|Commander (Season 7)}}
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| colspan="5"| Kira Nerys is the Bajoran military's liaison to ''Deep Space Nine'' and Sisko's [[second-in-command]]. During the Cardassian occupation of Bajor, she was a [[guerrilla]] fighter in the Bajoran resistance. She is initially suspicious of the Federation's intentions toward her planet, but grows to trust and befriend the rest of the crew. She is deeply religious, and sometimes finds it awkward having the Emissary of the Prophets as her commanding officer. [[Ro Laren]], a character from ''Star Trek: The Next Generation'', was the first choice of the producers for Sisko's first officer, but [[Michelle Forbes]] did not want to commit to a television series.<ref name="frontiers">Source: "New Frontiers". DVD extra included with ''Star Trek: Deep Space Nine – The Complete Second Season''.</ref>
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| rowspan="2"| [[Michael Dorn]] || [[Worf]] || {{Unbulleted list|Strategic Operations Officer|First Officer, USS ''Defiant''}}|| Seasons 4–7 || [[Klingon]] || Lieutenant commander
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| colspan="5"| The fourth season saw the addition of Dorn to the cast to boost ratings, reprising his role as the [[Klingon]] Worf, whom he had played for seven years on ''Star Trek: The Next Generation''.<ref name="charting">Source: "Charting New Territory". DVD extra included with ''Star Trek: Deep Space Nine – The Complete Fourth Season''. Of Worf, writer and producer [[Robert Hewitt Wolfe]] said in an October 20, 2002, interview that the [[Paramount Pictures|studio]] decided ''DS9''{{'}}s ratings were sagging at the end of the third season, and he and the other writers were asked to give viewers a new reason to watch. Their answer was to make Worf a part of the cast.</ref> Worf transfers to Deep Space Nine when a brief war between the Federation and the Klingon Empire breaks out and stays on as Strategic Operations Officer and later as a liaison to the Klingon Empire. His character arc centers on negotiating his dual identity as a Klingon and a Starfleet officer. He marries Jadzia Dax in the sixth season.
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| rowspan="2"| [[Nicole de Boer]] || [[Ezri Dax]] || Counselor || Season 7 || Trill || {{Unbulleted list|Ensign (Season 7)|Lieutenant, junior grade (Season 7)}}
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| colspan="5"| After the abrupt departure of Terry Farrell, Ezri Dax was added to the series as the next host of the Dax symbiont, a young Trill Starfleet [[Mental health counselor|counselor]]. Unprepared and untrained to be joined, she is often frustrated by aspects of the symbiotic relationship and the eight lifetimes' worth of memories she inherits. She struggles with her memories of Jadzia's love for Worf, as she finds herself attracted to Dr. Bashir.
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