Terran Empire

The Terran Empire is a Faction base in alternate version of the Star Trek universe in which human civilization diverged at some point; when exactly was this point of divergence has never been specified although it apparently happened before the 20th century, and various theories exist among the fans as to when it might be. In this timeline, Terran civilization became an expansionistic, militaristic, autocratic state that (among other things) enslaved various species, used brutal military discipline, and condoned military advancement via assassination of superior officers.

By the late 24th century, the Terran Empire has collapsed.

Fan Reaction

The Terran Empire and its universe are well known and popular parts of the Star Trek franchise. "Mirror, Mirror" is among the most famous and popular TOS episodes in the library and was notable for spawning the meme of a Goateed evil twin. The fan reaction to the fact that the Terran Empire had fallen by the DS9 era was very negative. The most popular episode of Star Trek: Enterprise was the "Mirror Universe Two" party.

Episodes featuring the Terran Empire Universe

Non Cannon stuff not listed

TOS

• "Mirror, Mirror"

DS9

• "Crossover"
• "Through a Looking Glass"
• "Shattered Mirror"
• "Resurrection"
• "The Emperor's new cloak"

Enterprise

• "In a Mirror, Darkly" (parts 1 & 2)