Deter is the Empress’s younger brother by less than a year. They look very much alike and were called “the twins” in their youth. He is famously the best swordsman and rider of the family. He is fiercely loyal to his sister and has taken the job of dealing with outside and otherworldly forces that may threaten the Vale. As such he is gone for long periods of time and is rarely at the castle. His father was Norebo as well.