"That incident is the reason The Death Knight exists. In order to protect my sister and mother, he had to do away with any feelings of fear or guilt to do what needed to be done. My father needed to be stopped, and at 9, I was not strong enough to do that on my own... So he helped me."

His alter is terrible and cruel, but he exists for a reason. He was needed. Though he is made of pure hatred, it would seem, he was actually born from love and protective desires.