In the mirror universe, Solkar was a male Vulcan who lived in the 21st century. He had a son named Skon. Solkar was the grandfather of Sarek, and the great-grandfather of Spock. (TOS movie: Star Trek III: The Search for Spock and TOS episode: "Mirror, Mirror") His great-grandson Spock would later rule as the last Terran Emperor from 2277 to 2293 and the first and only Consul of the Terran Republic from 2293 to 2295. (TOS - Mirror Universe novel: The Sorrows of Empire)