I don't mind at all. In the world my dreams take place, a Warlock is the product of a human and demon. Apparently a demon took on the form of my mother's husband seduced her. She became pregnant with me and it was clear from the beginning that I was not a normal child. My parents feared me and eventually it drove my mother to kill herself and my step father tried to drown me, but I inadvertently used my abilities to kill him.
Every Warlock has what is called a Warlock's Mark. They vary on every Warlock. For me it's my eyes and lack of a navel. In this world it's only my eyes that have changed so far.