They are imaginary characters. But perhaps not solely the products of my imagination since there are some aspects of the characters that relate to my own experience of a wide variety of people.
You'd have to have one hell of an imagination to completely make up a story but historians are very anal about what they think should be portrayed on screen. Thankfully they don't make movies we do.
Next Article
The costume that I wear on the show is a little snug and doesn't leave a whole lot to the imagination. I don't have a problem with it because of the way this character's been written.