Oh, I like that twist!!

oh, I see Well, in this novel, the heavy is the hero (I'm writing from the main character's point of view. He's also the bad guy).

The bad guy that your heroin would face...bad guy being used loosely...maybe obstacle would be a better term. Is that obstacle (bad guy, cancer, etc.) "heavy"...like Darth Vader to the Stars Wars series.

What is a "Heavy"? I've never heard that term.