Answer:
The negative hero in each story
One more than a duet.
A big shiny black car nobody wants to be a passenger in.
What gives life and love, and is there till they die? What can hide you and find you, heal you and feed you but should never give up on you?
Precious stones in a pack of cards.
What flies without wings?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?