Preeti's nerve is also called the nerve of courage he fist appeared whenn haddi made bill tiny and made bill go inside preeti's ear he saw the nerve that time the nerve was watching and when bill called the nerve he shouted to bill and bill made him smell the egg roll which is preeti's favourite food so bill got him and ate him when haddi was going to say something bill said shut up then in the morning haddi made preeti go inside.Preeti din't ate him instead she made the nerve go far far away from billu head.