n. A person of bad character in a work of fiction; in a western he will typically wear a black hat.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the principal bad character in a film or work of fiction
Word Usage
"Also, the main baddie – the nerd supreme – was a regular guy, in fact he was the most excellent drug dealer from Go, which I coincidentally was watching on TV only moments before seeing the movie."