In an alternate timeline, Syvak was a 23rd century Vulcan man, a veteran officer of the Interstellar Coalition Space Command in the 2260s decade. He commanded eight space vessels in his career, the last being the ICV Kuvak, a diplomatic ship. Syvak was killed when that ship was destroyed over the planet Babel in the year 2264. (ST - Myriad Universes novel: A Less Perfect Union)

There does not appear to be a main timeline counterpart to this character.
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