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Through a Glass, Darkly was the name of an RPG sourcebook released by Decipher in 2005, focused entirely on the mirror universe.


"I had an opportunity to observe your counterparts here quite closely. They were brutal, savage, unprincipled, uncivilized, treacherous... I found them quite refreshing."
Spock to Kirk and McCoy, Mirror, Mirror
Through the looking glass... darkly.
Haven't you ever wanted to phaser the captain, level a helpless planet, and steal your weight in gold-pressed latinum? Now you can – on the other side of the mirror. In this setting book for the Star Trek Roleplaying Game, you can bring Federation ideals of justice to the Mirror Universe, or revel in your own character's dark reflection. Prowl the Terran Empire with Captain Kirk of the I.S.S. Enterprise, or crush puny Human rebels with Intendant Kira of the Cardassian-Klingon Alliance. So grab your agonizer, grow a goatee, and watch your back–because in the Mirror Universe, nothing is what it seems...
Through a Glass Darkly: The Mirror Universe includes:
Complete setting information for the Terran Empire from Star Trek and the brutal Alliance from Star Trek: Deep Space Nine.
Rules and guidelines for creating your existing character's mirror image.
Everything you need to play a "Mirror Series," including new skills, cruel traits, and the malign Wheel of Comeuppance.
Star Trek RPG Rules and statistics for the agonizer, the Tantalus Field, and the deadly devices of Imperial Security.
Unsolved mysteries of the Mirror Universe to explore on your own or use in your series.


The sourcebook was only released and distributed electronically. It provides players with a fairly complete history and scientific explanation of the mirror universe, much of which contradicts at least mildly with information given in other non-canon sources. It also gives information on how to create a mirror counterpart for an already existing character in the RPG.

This article is a stub relating to an author, illustrator or other publishing production information. You can help our database by expanding on it.



B'ElannaDeanna TroiGeorge and GracieHarry MuddHikaru SuluJames T. KirkJohn GillJonathan ArcherKira NerysMagda KovacsMelakonNyota UhuraRevokRota SevrinSpockT'JalT'PauT'PolV'gerDanaherDarthaloMenes

Starships and vehicles

Antheraea PolyphemusCetacean ProbeISS Doomsday MachineISS RangerRavok


Cities and planetary locations

Alliance PalaceDystopia PlanitiaPresidio FortressScience Ministry Institute of Technology and EnterpriseTantalus Penal Colony

Outposts and stations

Betazed Orbital Construction StationSaturn FortressTerok Nor

Planets and planetoids

Acamar IIIAlpha Centauri VIIAndorBajorBetazedBolarusBolarus IXBreenCardassia PrimeCeti Alpha VEarthFerenginarGorlanHusnockOrganiaRigel IIRigel IIIRigel VRigel VIIRisaQo'noSSigma Iota IITuburonVega IXVulcan

Stars and systems

Stellar regions

Bajor Sector

Races and cultures

Alpha CentauranBajoranBorgBreenCardassianGorlanGornHalkanHusnockKlingonMinosianOrganianRomulanSheliakTerranTiburoneseTholianVulcan

States and organizations

Alliance Forces CommandAssassins of QBolian ResistanceBureau of Interstellar HegemonyCaduceus IncorporatedChronowerx CorporationDominionImperial Senate of the Terran EmpireImperial SecurityImperial StarfleetKeeler AerospaceKhak'maKlingon-Cardassian AllianceMinistry of Genetic PurityMinistry of WarMinistry of Vassal AffairsOrion CabalOrion SyndicateOswalditesProcurer's GuildPropaganda MinistryResource Acquisition BureauRevenue MinistryRomulan Star EmpireSecurity MinistryScience MinistryScience PoliceTal-Shaya PartnersTerran EmpireTerran RebellionTholian AssemblyZakrimStalinoidCarterianVulcan Underground

Ranks and titles

Betazed Supreme LeaderCaptainCaptain's MateChief Executive OfficerEmperor of the Terran EmpireGovernorIntendantLegateRegent of the Klingon EmpireSector CommandantSenator of the Terran EmpireStarfleet Commander

Science and technology

agonizeragony boothDeneva parasiteElasian tearsGenesis WeaponKironide injectionMind-Sifterneural neutralizerPacifer sporesPsi 2000 virusScalosian waterThe TeacherVenus drug


Alliance-Romulan WarKlingon Civil WarTerran RebellionTholian War

Other references

Articles of AllianceD'ChaatInfinite Profit in Infinite DiversityManaged CultureMillennial ReignPekPrime Directive



Stories featuring the mirror universe
Enterprise episode: "In a Mirror, Darkly" • prose: Age of the Empress • "Nobunaga"
Discovery episodes: "Into the Forest I Go" • "Despite Yourself" • "The Wolf Inside" • "Vaulting Ambition" • "What's Past Is Prologue" • "Terra Firma" • comics: Succession ("Issue 1" • "Issue 2" • "Issue 3" • "Issue 4")
The Original Series episode: "Mirror, Mirror" • comics: Hell's MirrorThe 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
Kelvin timeline comics: Mirrored ("Part 1" • "Part 2") • "Parallel Lives, Part 2" • Live Evil ("Part 1" • "Part 2" • "Part 3")
The Next Generation comics: "Mirror Images, Issue 3" • Mirror Universe Collection (TNG - Mirror Broken comics: "Origin of Data", "Prelude", "Issue 1", "Issue 2", "Issue 3", "Issue 4", "Issue 5" • TNG - Through the Mirror comics: "Issue 1", "Issue 2", "Issue 3", "Issue 4", "Issue 5" TNG - Ripe for Plunder comics: "Chapter One", "Chapter Two", "Chapter Three", "Chapter Four", "Chapter Five" • TNG - Terra Incognita comics: "Issue 1", "Issue 2", "Issue 3", "Issue 4", "Issue 5", "Issue 6") • ST: The Mirror War: "Issue 0", "Issue 1", "Issue 2", "Data", "Issue 3", "Issue 4", "Geordi", "Issue 5", "Issue 6", "Issue 7" • 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" • Disavowed
Voyager prose: The Mirror-Scaled Serpent • "Bitter Fruit" • comic: "Mirrors & Smoke"
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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