Vesper

Also known as "The Evening Star", Vesper is the MIND Link AI that assists Locke and his team on their missions. Vesper is highly advanced and is capable of processing vast amounts of data in real-time. It (often gendered as "she") is also responsible for helping control the Guardian Frames for their pilots.
Activating Vesper while in the field displays helpful information, such as status updates, Missions information, waypoints, and other helpful options on the player's Heads Up Display.