Ancilla

An ancilla was presumably a type of Forerunner artificial intelligence or information-storage system stored within a Forerunner's armor, able to be accessed by a user at will. Bornstellar Makes Eternal Lasting referred to his ancilla as "she", possibly indicating that the ancilla possesses a personality similar to UNSC "Smart" AIs.

List of appearances

 * Halo: The Flood (2010)
 * Halo: Cryptum