Juliet (AI)

Creation
Juliet was created in the year 2551, "born" in the ONI Section-III AI Labs. Her creator, Dr. Janine Darc, incorporated special Forerunner data, known as the "infinity code", into Juliet, effectively granting the AI immortality; Darc named Juliet after the legendary heroine of an ancient English playwright. Tasked to be the AI of the Heavy Battleship UNSC Myrmidon, in 2552, Juliet was deployed in combat in the Manheim campaign, where she ran successful operations in the ship until the crew was forced to evacuate. She was "unplugged" and brought down to the surface, serving as a command and control officer. When ONI operative SPARTAN-091 arrived on Manheim, Juliet was transferred into his MJOLNIR Mark VI-SRS armor's neural pathways.

Manheim
Juliet quickly became best friends with her biological charge, and the two maintained a close working relationship during the battle for Manheim.