Sif

Sif is a UNSC A.I. who takes the form of a woman with a sleeveless gown and long golden hair; she also gives the appearance of a ballerina. She is mostly in charge of keeping the shipments to and from Harvest in order. Mack talks with Sif often, albeit oftentimes to her annoyance and frustration.

Trivia

 * Sif is the wife of Thor in Norse mythology.