In the mirror universe, Solok was a Vulcan's mirror counterpart in the Imperial Starfleet. In 2277, he served as a lieutenant in the security division of the ISS Enterprise under Admiral Spock's mirror counterpart. On Deneva's mirror counterpart, he helped to turn the tables on Starfleet operatives assigned to assassinate Spock by Matthew Decker's mirror counterpart. Specifically, he took out two snipers in a conference hall with fellow security officer Stang. (TOS novel: The Sorrows of Empire)

Although there is a Vulcan in the regular universe named Solok, it is unlikely that he is this character's mirror counterpart, as he attended Starfleet Academy in the 24th century.
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