The Viziers among the old Shemsu-Heru were Horus chosen administrators. Whenever he spent time in the Shadowlands, it was their duty to guide the other members of their Dynasty. They also coordinated the various mummies that had dispersed across the globe when Horus announced the Diaspora. They held council within the city of Alexandria.
Some of the Viziers of Horus returned after the Sixth Maelstrom as Imkhu.