Answer:
I am always in front of you but you will never see me
When you take away the whole from me, there is always some left. What am I?
I make everyone blind. You can't see me but I will always come back for you. What am I?
I may be made of metal, bone, or wood and have many teeth. My bite hurts no one and the ladies love me. What am I?
I have a mouth on my head and eat everything.
Dark, feathery, and popular in Baltimore and fantasy books.