big bad(redirected from a big bad)
The main villain or antagonist in a fictional work. In the case of a TV show, the big bad typically influences most of, if not the entire, season, rather than just one episode. The term was popularized by the TV show Buffy the Vampire Slayer. Who's the big bad this season on "Supernatural"?
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.