Xaro Xhoan Daxos is one of "The Thirteen" merchant lords of Qarth, a city in the eastern lands of the Free Cities. Upon hearing tales of "the mother of dragons" (a.k.a. Daenerys Targaryen), Xaro seeks her out in the capacity of a guide and adviser, who may have his own agenda for courting the dragon queen and helping her win the "pureborn" nobles of Qarth to her cause.
Known for their dramatic flair, the merchants of Qarth delight in passion and emotion, but are deceptively cunning and clever. They are also beholden to "the Undying," a harem of witches and sorcerers hidden away in an ancient house.