Weapz

I have a guess as to who the Prefect may be. Could it possibly be a Primordial? A race that predates the forerunners and is mentioned in the newest book Halo: Primordium. Here is a quote from the book. "The Didact stepped forward with a sharp grunt. He lifted his hand and a panel appeared in the air, shaping controls. The Captive's head squared on its torso, as if bracing for what it knew was about to come. 'It is your task to kill this servant,' it said, 'that another may be freed.'"