What Am I Riddles

Question: What always eats but is always hungry?

Question: There's a B in my hand. So what's in my eye?

Question: To look cool wrap me around your head.
Remove a letter and eat me instead.

What am I?

Question: Paint me up to look real good,
Then take me to the shop to maintain under the hood.
Use a small brush to make no mistake,
Or just replace me with something fake.

What am I?

Question: I am greater than God, more evil than the devil, the poor have me, the rich don't, and if you eat me, you'll die.What am I?