10 Best Mirror Universe Characters In Star Trek

10. Empress Hoshi Sato

The first foray Starfleet took into the Mirror Universe may have come in the Star Trek episode, "Mirror, Mirror," but canonically, a crossover occurred a century prior during the events of Enterprise. At that time, the Terran Empire wasn't as developed as it would be in the 23rd century.

Terrans had conquered numerous species, including the Vulcans, Andorians, and others in nearby space. Commander Jonathan Archer served as second in command of the ISS Enterprise before taking command of the USS Defiant, a starship from the Prime Universe that came from the 23rd century.

When this happened, his communications officer, Lieutenant Hoshi Sato, came along with plans of her own. She seduced and poisoned Archer, taking command of the Defiant herself. She then proclaimed herself "Empress Hoshi Sato" and took over the Terran Empire with her technologically superior starship. While the TV series' exploits of Empress Sato ended there, her story continued in a Mirror Universe novel.

The Sorrows of Empire detailed how the Sato dynasty continued for more than a century through the use of binary clones of the Empress. This effectively left the same person in command, as the clones were "nothing more than copies of the biggest narcissist in galactic history."