Test subject Z-d, hereafter referred to as Metroid Prime, was recently discovered in a cavern by mining crews. It quickly dispatched the miners, but was eventually contained by security units and drones. Once contained, we were able to begin studies upon Metroid Prime. The results have been astonishing. It is genetically similar to a Metroid, albeit on a high evolved level. It displays a limitless capacity for Phazon infusion and shows no Phazon-based degeneration whatsoever. It continues to grow in size, and while it has manifested some psychotic behavior, the cold field we use to pacify remain effective. Authorization for advanced studies on Metroid Prime have been approved.