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.

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