He is a hunter.He hates his family, because for him human/vampire love is impossible.D is very cold and distant, but he is not an intentionally abrasive person. His demeanor is forged from steel, seemingly emotionless, but is capable of adequately expressing himself when the situation calls for it. This is most often when his client is either in danger or their safety is being used as a threat against him, frightening the instigators with a flash of white-hot anger.