Vulkan Sligo is Winter's adoptive parent and the primary antagonist of both the show and the book series. His first atempt at killing Callum Ormond was on January 31 when he threw him in an oil pit. He later drowns to his death in a swamp in Ireland in December along with Zombie Two and Sumo, but he doesn't die, he is mistaken to be dead. He comes back in Revenge and is the kidnapper of cal. He eventually dies a painful death by a blue ringed octopus.

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