Mirror Universe
(coexisting on another dimensional plane)
MA 2009Warning!
This page contains information regarding Star Trek: Discovery, and thus may contain spoilers.

For the prime universe counterpart, please see Human.
"The Terrans appear to be the antithesis of us in every way. They're an oppressive, racist, xenophobic culture that dominates all known space."

Terran was the term consistently used to refer to Humans from the mirror universe. (DS9: "Crossover")

History and politicsEdit

Millennia before 2256 or 2257, Terrans believed in equality, freedom, and cooperation, but at some point decided these ideals were destructive delusions that only bred rebellion and abandoned them in favor of the fascism that eventually defined them. (DIS: "Vaulting Ambition")

On April 5, 2063, a group of Terrans were filled with fear and suspicion when a Vulcan scout ship landed on Earth to initiate first contact. The Terrans slaughtered the Vulcan crew and used the technology within the scout ship to create the interstellar Terran Empire.

The Terrans conquered many of the races they encountered, including the Vulcans, Orions, and Tellarites. Many species became slaves of the Terrans, but some species, like the Vulcans, were treated better, and could even serve in the Empire's military. (ENT: "In a Mirror, Darkly")

This interstellar empire lasted almost three centuries. In the year 2267, Spock encountered the prime universe James T. Kirk, and became determined to change the empire. Spock eventually became the empire's ruler, and instituted reforms that made the empire much more peaceful. (TOS: "Mirror, Mirror")

Unfortunately, these reforms led to the Terran Empire's downfall; they resulted in the empire's military strength being unable to prevent the equally vicious aspirations of the Alliance of Klingons and Cardassians from conquering the Empire. When their empire fell, the Terrans were forced into slavery by the Alliance.

In the year 2371, the Terrans, as well as the Vulcans, were still slaves of the Alliance. However, after an encounter with several prime universe individuals, Benjamin Sisko, a Terran pirate working for the Alliance, decided that he'd had enough of slavery and began a revolt. He led a number of Terrans and other species in the Terran Rebellion, a revolution against the Alliance. Though Sisko was killed the same year, the rebellion still lived on. (DS9: "Crossover", "Through the Looking Glass")

A year later, in 2372, the rebels captured the space station Terok Nor above the planet Bajor. The Alliance's ruler, Regent Worf, led a fleet to retake the station, but the rebels managed to drive the Alliance fleet off. (DS9: "Shattered Mirror")

Two years later, in 2375, the rebels captured Worf himself. When last seen, the rebels appeared to be well on their way to achieving victory over the Alliance and winning back their freedom. (DS9: "The Emperor's New Cloak")


Terrans exhibited only one physiological difference from prime universe Humans: sensitivity to bright light. This fact led Michael Burnham to quickly realize that the Gabriel Lorca she had been serving under had been his mirror universe counterpart all along. (DIS: "Vaulting Ambition")

Although this was only stated in "Vaulting Ambition," in mirror universe episodes predating Discovery and following "Mirror, Mirror," Terran starships and habitats are noticeably darker than a Federation starship would be, and Jonathan Archer appeared to squint while in the captain's chair of the USS Defiant.

See alsoEdit