Tellarite (mirror)

In the mirror universe, the Tellarites were a subject species of the Terran Empire.

The Tellarites were conquered some time following the conquest of the Alpha Centaurans in 2074. Although technologically savvy and costing the empire many lives, the Tellarites were eventually subjugated. Threats regarding the destruction of their homeworld prompted the Tellarites to offer Terrans their engineering ingenuity, and the empire's technology quickly advanced. 

By the mid 2150s, Tellarites could be found serving on board Imperial Starfleet vessals such as the ISS Enterprise (NX-01). 

With the rise of the Klingon-Cardassian Alliance, the Tellarites would suffer even more than thay had under the empire. As the Alliance found Tellarites to be far too argumentative and difficult, they were attacked outright and reduced to only a few hundred thousand by the 2360s and 2370s.