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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.[1] Enormous ancilla networks known as metarchies were coordinated by a metarch.[2] The most advanced level of metarch was the Contender-class, an example of which is Mendicant Bias.[3]

A sub-metarch was a class of ancilla below a metarch. These AIs were commonly assigned to flotillas of several vessels, their intelligence distributed among the ships under their control. While they would only respond to the flotilla's commander,[4] this could be bypassed with the proper verbal override codes. These codes were incredibly complex, consisting of hundreds of random words and numbers.[5]

List of appearances[edit]


  1. ^ Halo Waypoint: Halo: Cryptum Glossary
  2. ^ Halo: Cryptum, page 281
  3. ^ Halo Waypoint - Universe - Mendicant Bias
  4. ^ Halo: Silentium, page 79
  5. ^ Halo: Silentium, pages 82-83