Déjà

Déjà
Biographical information
Began service:	sometime before 2525
Ended service:	sometime before 2552
Gender:	Female (in voice and form)
Description:	"The appearance of a Greek goddess: barefoot, wrapped in the toga, motes of light dancing about her luminous white hair."
Political and military information
Affiliation:	United Nations Space Command, Catherine Elizabeth Halsey
Functionality:	Teacher and assistant to the Spartan Program

Déjà was a "dumb" AI who trained the Spartans in their first stages of training at the CASTLE Base and Reach Naval Academy facilities on Reach. She taught them terms such as Oly Oly Oxen Free. Her educational lessons were part of the Spartan's training program, meant to increase their strategic thinking. She also educated them in history, math, and other things most people are taught. One of her first lessons she taught the Spartan-IIs was the famous Battle of Thermopolae, where 300 Spartans made a stand against a million Persians

Her counterpart, Chief Petty Officer Mendez, gave the Spartans rigorous physical training to make them into soldiers. This, along with Dr. Catherine Halsey's physical augmentations and MJOLNIR armor, made the Spartans intelligent, strong, and fast.

Her present state is unknown, as she was on Reach when the Covenant attacked.