Karangool was the Captain-in-Chief of the ships of Ungatt Trunn's Blue Hordes, and the only fox in Trunn's army besides Groddil. A former corsair, Karangool was highly esteemed by Trunn and competent and vicious. A martinet, he enforced Trunn's will throughout the Blue Hordes with merciless rigor.
He remained close to the wildcat but nonetheless plotted with Ripfang and Doomeye to abandon the wildcat if Brocktree bested Trunn in single combat; after Trunn's death the fox left the western coasts with the remainder of Trunn's army.
Upon his escape, Bucko Bigbones chased his ship down. One of Trunn's Captains, Ripfang, pushed Karangool into the water, where he was slain by Bucko (his death was never shown, but it is known that Bucko began attacking him with a sword). His probable demise was seen as an act of revenge by Bucko, for Karangool, under Trunn's orders, had been the one who had administrated much pain on Bucko in a previous encounter.
Later, when the mortally wounded and delirious Trunn washed up on the beach, he mistook Groddil for Karangool, only to discover he was dealing with a less loyal fox.