Demetria is chief adviser to the Grand Crusader. She is called the Oracle due to her 'otherworldly' senses. She has successfully assisted the Scarlet Crusade in several of their victories against the Scourge and the Forsaken.
She is always guarded by eight absolutely loyal Scarlet Troopers when leaving Tyr's Hand, a headquarters of the Crusade. But even alone she is a powerful enemy, resurrecting her guardians, healing herself and killing her enemies with mighty magical attacks.