The Bio-Vizier was a high-ranking political adviser of the Divine Order, with responsibilities and expertise in bio-engineering technology.
One of his primary roles was the upkeep of the Divine Assassins, of which much of the technology to preserve them was of Brizon's design. Apart from this, Brizon advanced the Divine Order's technology to new heights, with his constant production of inventions which furthered the Order's conquest of worlds.
Mantrid was His Divine Shadow's most powerful Bio-Vizier. Brizon was Mantrid's teacher, mentor and predecessor in the role of Supreme Bio-Vizier.