The captain of a Klingon battle cruiser who, in 2151, was persuaded by Archer to spare a Xyrillian ship found hiding in his wake in exchange for holographic technology.
Vorok appears in the first-season Enterprise episode Unexpected, played by Christopher Darga. Enterprise seeks out his warship because the Xyrillian vessel that left Tucker pregnant is now sheltering behind it, as it once did behind the human ship.
Vorok is furious to learn of the stowaways and intends to destroy them. He is unimpressed by Archer until T'Pol points out that this is the man who returned Klaang to the High Council, a debt she suggests is worth honouring.
Tucker has to reveal his condition to the amused Klingons. The matter is settled when the Xyrillians agree to give Vorok their holographic technology, after he and his officers are shown a recreation of Qo'noS.