Os rostos nas paredes foram "colecionados" pelos homens sem rosto. Esses rostos podem então ser usados pelos homens sem rosto, de modo que um homem sem rosto pode aparecer como qualquer um dos rostos nas paredes.
They also cure the faces of the dead who come to die in their sanctuary, hanging these on the wall as macabre masks for use in their disguises during assassination contracts. These are more than masks, however, and the wearer assumes the true appearance when applied using a tribute of one's own blood to moisten the application. In this way, the Faceless Men are using tools as part of their disguise, rather than a reliance on glamours or outright magic for disguises, like Melisandre or other followers of R'hllor.