Ancilla

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Ancillas are a type of Forerunner artificial intelligence construct. They come in several varieties, each designed for different purposes and possessing differing capabilities. Known models include the Monitors, the Contender-class AIs, and the personal ancillas carried by most Forerunners. They can be stored within a Forerunner's body armor and can be accessed by the user with enough will. Ancillas can also be housed within personal shells like those of the Monitors, as well as ships, buildings, and various forms of machinery. They typically possess personalities approximating that of a Forerunner; in this respect, they are quite similar to human "Smart" AIs. The most powerful ancilla, next to the Contender-class, is the Metarch-class ancilla which were used exclusively by the Forerunner Council. When Forerunners are a Manipular, the Ancilla tries harder to make itself more "visible". But once the Forerunner mutates once, the Ancilla makes itself less visible so it can divert that power to other tasks; making it much harder to access them. It is also apparent that the Ancilla help the Forerunner access the Domain after mutation.

Personality

Ancillas, although they each of separate personalities and minds, also seem to work together. For example, one Ancilla may change its personality if it helps the Forerunner, by accessing the old Ancilla's database and reprogramming itself with the data given by the old Ancilla. But the best thing that helps Forerunner and Ancilla work together is the Ancillas' ability to read minds. The Ancilla -- if allowed by the Forerunner-- will access the Forerunner's personality and reprogram itself to be the most compatible with the Forerunner.

Trivia

• Bornstellar Makes Eternal Lasting's relationship with his ancilla is strikingly similar to that of John-117 and Cortana. Like Cortana, Bornstellar describes his ancilla as a "blue female figure in the back of [his] mind".
• "Ancilla" is Latin for 'female servant' or 'maid'.

List of appearances

• Halo: The Flood (Mentioned only)
• The Forerunner Saga
  • Halo: Cryptum (First appearance)