Trell was the commanding officer during the Battle for Deltora. He led the Shadow Army into battle and worked closely with Sheela. He was shocked when he saw Greers falling to their deaths and could not believe what he was seeing.
Killing of Sheela
After Sheela had seen the downfall of her Greers, she realised she was no longer needed and prepared to gallop away. Commander Trell asked her what she was doing and ordered her to remain. When Sheela further angered Trell by mocking him, Trell stabbed her, piercing her heart.
Trell were a fine-looking man. He wore gold bands clasped around his wrists and gold hoops, hung from his ears. His eyes were "as cold as stones" — expressionless and showing little emotion. He rode a tall grey horse, which once belonged to a Rithmere chief, and the chief's bleached skull swung from the saddle of the horse.
Trell often asserted his authority and saw himself above everyone, especially Sheela. His only loyalty was to himself, implying that he did not even care for the Shadow Lord, and only followed him because of what he might gain. He could be angered very easily and often did things out of rage.
Trell was a talented fighter and leader and had excellent sword skills.