Glaurung is a Class Seven "Dumb" Artificial Intelligence, and is the shipboard AI of the UNSC Carrier Aeneas. With advanced tactical and strategic programs, extensive medical and military files, and newly developed Covenant translation and anti-encryption software, Glaurung's short lifespan has encompassed the battles for three UNSC colonies, the emergence of new Covenant species, weapons and vehicles, and the discovery that there is more to worry about than the Covenant in the galaxy.