A mysterious, ghostly statue in the shape of the Chozo God of War. When Samus comes upon this room wearing only her Zero Suit, the God of War challenges her, and makes her face her greatest enemy: herself. The God of War is most likely a hologram of a stationary statue, projected to seem like it's carrying the mirrored orb. This orb holds the key to unlocking Samus's Legendary Power Suit, and is something only she can receive.
Hundreds of years ago, before swearing to become a completely peaceful and pacifistic race of creatures, the Chozo were a highly warring race. They used the image of the God of War to help inspire them in times of battle. Samus's Power Suit is based highly on the design of the Chozo God of War.