The Lady of Masks is the ruler-cum-administrator of The Spire.

Her origins are unknown, as are the reasons why the various factions within the city respect her authority. None question her word and all pay her the respect she is due

Formerly, The Lady of Masks was known as Isabella Marcos and served as First Officer under Captain Gabriel de la Cruz during the Iberian Civil War. She was critically injured and scarred during the Battle of El Diablo's Eye - the final conclusive battle in the civil war - and has since worked alongside Cruz in hunting down the traitorous officers who oversaw the massacre of the rebels.