Metarch-class ancilla

Metarchs were a class of hyper-advanced ancillas created by the Forerunners to serve the Council. They were so exclusive that only five were in existence at any given time. Enormous ancilla networks known as metarchies were coordinated by a metarch.

Mendicant Bias was considered a Metarch-class ancilla, though he was technically a Contender-class AI and therefore more advanced than even a Metarch.

List of appearances

 * Halo: Cryptum