Metarch

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. The most advanced level of metarch was the Contender-class, an example of which is 05-032 Mendicant Bias.

List of appearances

 * Halo 3
 * Terminals
 * Halo: Contact Harvest
 * Halo Legends
 * Origins
 * Halo: Cryptum
 * Halo: Primordium
 * Halo: Silentium
 * Halo: Rebirth