Pavel Chekov (mirror)

Pavel Chekov of the Mirror Universe may or may not have led a 'similar' life to his Primary Universe counterpart, but by 2267, he was an ISS Enterprise officer with considerable support in his quest to gain his own captaincy.

It was on stardate 3823.7 in 2267 that Chekov tried to assassinate whom he thought was his Universe's James T. Kirk, only to be resoundly foiled and placed - at Spock's orders - in the agony booth for his temerity (TOS episode Mirror, Mirror).

When the Mirror Universe's Kirk indeed returned to his Universe and learnt of Chekov's actions, he ordered the booth's power to be turned down, but left Chekov in there. Thirteen days later, Chekov's dessicated corpse was photographed and the photo was framed. It hung in Tiberius' hideout in Iowa by 2375 (Shatnerverse novel Dark Victory).