Answer:
A king without a crown
It is a cat but not a kitty, You'll never catch on in a city. Its fangs are huge and so its claws, A death machine with paws and jaws. In its own way a royal fellow, Striped with black and clothed in yellow
Who spends the day at the window, goes to the table for meals and hides at night?
Edible beach crawler served at seafood restaurants, similar to a lobster, but quite different.
I have black skin but I look white, What am I?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.