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This article contains information about a non-canonical subject that, while official, is not part of the established Halo universe.
HISG Kusanagi.jpg
Biographical information



Political and military information



Kusanagi was a 2nd Generation "smart" AI construct used by the UNSC during the Battle of Jericho VII.[1]


In 2535, before the Battle of Jericho VII, Kusanagi was monitoring all transmissions to the system, in which she intercepted an encrypted Covenant message from the Prophet of Candor stating the Covenant were to attack Jericho VII. She proceeded to go over the scenario, and asked Blue Team to assist.[2]

In 2552, during the Fall of Reach, Kusanagi was intercepting Covenant communications and learnt of a force that was coming to destroy generators powering CASTLE Base. She proceeded to ask Blue team to destroy navigation data to Earth.[3]

Soon after the planet had fallen, the Prophet of Candor ordered his forces to recover a Forerunner artifact near CASTLE Base. Kusanagi was still active and proceeded to ask surviving UNSC forces to stop the Covenant forces from getting access to the artifact.[4]


The AI is named after a Japanese legendary sword. This could be a reference to Bungie's running motif of naming important AIs after mythological swords; the names of both Cortana and Durandal, the principal AI in the Marathon series, are based on this convention, although the two are more than tangentially connected as both are named in an inscription on Cortana's namesake.

List of appearances[edit]


  1. ^ Strategy Game back
  2. ^ Halo Interactive Strategy Game, campaign 1, "Jericho VII"
  3. ^ Halo Interactive Strategy Game, campaign 2, "Defense of Castle Base"
  4. ^ Halo Interactive Strategy Game, campaign 3, "The Hidden Artifact of Reach"