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Crossover (episode)

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Kira and Bashir are transported to an alternate universe, previously visited by James T. Kirk, where Humans are slaves to Cardassians, Klingons and Bajorans.




Main characters
Mirror universe characters
Referenced characters
B'EtorIsam HelewaJames T. KirkJames T. KirkLursaSpockTor Jolan


BajorBajoran wormholeDeep Space 9ore processing centerPromenadeTerok Nor
Referenced only 
EarthFowlaNew Bajor


Klingon bird-of-preyUSS Rio Grande (Danube-class) • Vor'cha-class
Referenced only 

Races and culturesEdit


States and OrganizationsEdit

Bajoran MilitiaKlingon-Cardassian AllianceStarfleetUnited Federation of Planets
Referenced only 
House of DurasTerran EmpireStarfleet Academy


Boldaricdabodocking clampDrathan puppy ligfairy taleintendantIntendant of Bajorjumja tealambdalatinumpaghthetathoriumtransportertransporter accidentwarp fieldwarp signature


Related storiesEdit

  • In Fearful Symmetry, Sisko learns that the Prophets were responsible for sending Kira and Bashir to the mirror universe.


External linksEdit


published order
Previous episode:
The Wire
DS9 episode produced Next episode:
The Collaborator
Previous episode:
The Wire
DS9 episode aired Next episode:
The Collaborator
chronological order
Previous Adventure:
Rogue Saucer
Pocket Next Adventure:
Stories featuring the mirror universe
Enterprise episode: "In a Mirror, Darkly" • prose: Age of the Empress • "Nobunaga"
The Original Series episode: "Mirror, Mirror" • comics: The Mirror Universe Saga ("... Promises to Keep" • "Double Image" • "Deadly Reflection!" • "The Tantalus Trap!" • "Masquerade!" • "Behind Enemy Lines!" • "The Beginning of the End..." • "Homecoming...") • Fragile GlassMirror Images ("Issue 1" • "Issue 2" • "Issue 4" • "Issue 5") • "The Mirror, Crackedprose: SpectreDark VictoryPreserverThe Sorrows of Empire • "Ill Winds" • "The Greater Good" • video game: Shattered Universe
The Next Generation comic: "Mirror Images, Issue 3" • prose: Dark MirrorThreeThe Worst of Both Worlds • "The Traitor" • "The Sacred Chalice" • "For Want of a Nail" • Rise Like Lions
Deep Space Nine episodes: "Crossover" • "Through the Looking Glass" • "Shattered Mirror" • "Resurrection" • "The Emperor's New Cloak" • comic: "Enemies & Allies" • prose: Dark PassionsWarpathSaturn's ChildrenFearful Symmetry • "A Terrible Beauty" • The Soul Key • "Freedom Angst"
Voyager prose: The Mirror-Scaled Serpent • "Bitter Fruit"
New Frontier comics: Turnaround ("Part I" • "Part II" • "Part III" • "Part IV" • "Part V") • prose: Cutting Ties • "Homecoming"
Klingon Empire prose: "Family Matters" Titan prose: "Empathy" Vanguard prose: "The Black Flag"
Miniseries and anthologies RPG sourcebook: Through a Glass, Darklycomics: The Mirror Universe SagaTurnaroundMirror Imagesprose: Mirror Universe TrilogyMirror Universe (Glass EmpiresObsidian AlliancesShards and Shadows)

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