Once, I optioned a novel and tried to do a screenplay on it, which was great fun, but I was too respectful. I was only 100 pages into the novel and I had about 90 pages of movie script going. I realized I had a lot to learn.
Nothing lives up to what you imagine. It changes, shifts, becomes something else.
If you have not been a villain at a certain point in time, you will never be a hero. And the day you are a hero, you may become a villain the next day.