Daenerys Targaryen faced many challenging enemies throughout her journey in HBO's Game of Thrones. Some were internal, some were familial, but most were those who thought themselves better than a woman. One of her most formidable opponents, before she ever reached Westeros, in the series was the slave masters and a small insurgent group that called itself the Sons of the Harpy. The harpy is a traditional symbol used in Ghiscari culture, which members of the group are a part of.