In the mirror universe, Hadley was a Terran male sciences division crewman in the service of the Imperial Starfleet of the Terran Empire during the 23rd century. He was walking through the corridors of the ISS Enterprise when the James T. Kirk, Leonard McCoy, Montgomery Scott and Nyota Uhura from the primary universe were heading to sickbay, following their arrival in his universe. (TOS episode: "Mirror, Mirror")