The leader of a band of Klingons who extort deuterium from a small mining colony.
Korok heads a group of Klingons who periodically visit a deuterium mining colony to collect fuel under a so-called regular arrangement. In Marauders he strikes the colony leader Tessic when the full shipment is not ready and gives the miners four days to deliver.
When Korok returns, the colonists, trained and organised with help from Archer's crew, are ready for him. The Enterprise crew turns the colony's own deuterium against the raiders, and Korok and his Klingons are driven off.