Do I italicize Harry Potter's name?

Answer 1

What exactly do you mean ? If your writing a critical evaluation any time you wrote the name of a book you would but not if it was just Harry's name

It would depend upon the 'style manual' that you are using. There will be some differentiation for a series or title, often either putting it in italics, or putting it in quotes. If you are told to put titles in italics, you would italicize Harry Potter Series. It is a specific series.

Answer 2

yes if its typed if not underline it

Answer 3

Yes.