Answer:
My first is second in lineอพ I send shivers up your spineอพ not quite shining bright I glitter in the light.
Five hundred begins it, five hundred ends it. Five in the middle is seen. First of all figures, the first of all letters. Take up their stations between. Join all together, and then you will bring before you the name of an eminent king.
You use it between your head and your toes, the more it works the thinner it grows.
Give it food and it will live, give it water and it will die.
I am always hungry, I must always be fed. The finger I lick will soon turn red.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?