An assassin disguised with a skull mask. One of the successive Hassan-i Sabbah who served as "The Old Man of the Mountain," the leader of a group of assassins. While alive she was known as "Hassan of the Serenity" for her mastery of poisoning - her entire body is poisonous, and she used it to kill her targets, but not before entrapping them in a relationship with her, as if she sought happiness...and then stole said happiness from herself with her own two hands.