Lysithea

Lysithea is an Office of Naval Intelligence Section 3 Artificial Intelligence construct. She was located in the UNSC High Command's headquarters, HighCom Facility Bravo-6 in Sydney, Australia. She was programmed as a security precaution, questioning people who wanted to enter the facility's more classified areas. ONI programmed her to test for the tone and condition of responses to her queries. Despite her serious position, she was somewhat playful with the people in the facility.

She questioned Lieutenant Wagner before he entered a briefing with several top officials in the UNSC.