When they opened the guardian beast, they discovered that the leader of the original Guardian Knights who controlled it, the middle-aged man in dark green clothing, had turned into a lump of meat paste, staining the walls of the cabin red.
At that time, the guardian beast was being crazily bombarded by the six-headed monster that Su Yu had transformed into. The middle-aged man, inside the beast, was struck continuously by the terrifying impact. Although he too had reached the Demi-God Realm, his physical body could not withstand it and he perished.
By this point, all two thousand knights and the invading Amori had been completely wiped out, not a single one had escaped.