Alex (mirror)
From Memory Alpha, the free Star Trek reference
Mirror Universe
(coexisting on another dimensional plane)
(coexisting on another dimensional plane)
Alex was a Terran Empire engineering officer, stationed on board the ISS Enterprise in 2155. He was apparently killed when the ship was destroyed by the Tholians in the Vintaak system. (ENT: "In a Mirror, Darkly")
Mirror Alex, like his counterpart, was played by an uncredited Mark Correy.
