Cheiron was a centaur. In battle against the sphinxes, Cheiron realized how dire was the crisis to his society caused by the loss of its tin imports. Accordingly, he offered to lead an expedition to the Tin Isle to reestablish contact with the nuggies. Instead he made contact with the mans. Initially, Cheiron was successful in negotiating a trade agreement with the mans which would restore the centaurs' supply of tin, but the agreement was abrogated when drunken centaurs brawled with mans at a feast celebrating the agreement. Cheiron's companions were forced to flee the Tin Isle for their lives. Upon returning home, Cheiron was obligated to inform his fellow centaurs that trade relations with the Tin Isle were no longer possible. Then in despair he waited for the mans to conquer the Centaurs as they had the Nuggies.