Derrick is a tall and handsome young man with black hair and blue eyes, characteristic for the Eckhart family. He is mostly seen wearing elegant and expensive clothing, usually in nuances of black, blue and gold, although he can also be seen wearing his armour while patrolling with the Eckhart knights and an all black hunting suit during the hunting tournament. As a nobleman, he is very prideful and can also look down on people. He doesn't like it when Penelope calls him brother