Derek is naturally quiet, sarcastic, brooding, irascible and prefers his own company, but possesses great strength of character. Upon rising to alpha status, Derek exhibits hotheadedness from the rush of power and expectation that he'll be able to protect the people he cares about from any enemy. His eyes change colour when he is a wolf, but normally they are brown and his hair is black. Derek forms a wolf pack out of a bunch of kids, because it fulfills his need for a pack. 