In a version of the mirror universe, David Garrovick was a Terran Starfleet officer who served aboard ISS Enterprise in the 2260s.

Following the first crossover with counterparts from the primary universe in 2267, James T. Kirk believed that Garrovick played a part in allowing the ship to be infiltrated by the four "impostors", so Kirk had Garrovick hung outside Starfleet Headquarters alongside Leonard McCoy, Montgomery Scott, Janice Rand, Willard Decker, Jabilo M'Benga and Marlena Moreau. (TOS novel: Dark Victory)