Metal golems
Valor cleared his throat, sounding like two metals rubbing together. "Anyway you will fight my metal golems and if you can defeat them, then you'll fight me!" He pointed at the sliver statues that lined the wall in circle.
"Golems? Aren't you all Ferrons?" Rota asked.
"No," Valor answered flatly. "They're golems."
It was true once they studied them. Where Valor was solid metal with muscle and metal flesh ripping, those statuess surrounding them were rigid and hollow.
The metal golems carried long swords and their eyes, burned a dark red.
Valor walked back to his throne and slowly sat, pointing one finger at them and smiling. "I must warn you, I draw power from the castle. This throne gave me power so I'll test you properly."
So that's it! Belialthorn had just gotten the answer to his question of why a powerful aura was coming out of the throne. So the Castle was helping in this.