The Sons of the Harpy were an underground insurgency group fighting the rule of Daenerys Targaryen over Meereen, composed of former slavers. They took their name from the harpy, the traditional heraldic symbol of the slave-masters in the Ghiscari cities of Slaver's Bay, and the Ghiscari Empire before them. They concealed their identities by wearing golden masks with horned faces resembling harpies.