Big Bad

Big Bad is a term usually used for the television series Buffy the Vampire Slayer but began to be used by some critics and fans of Supernatural.

The genre is divided into the main villains and the secondary villains. The Big Bad is the main villain of the season, orchestrating events behind the scenes, while the secondary villain(s) often (but not always) serve the Big Bad, appearing more regularly and antagonising the heroes.

Season 1

 * Main Villain: Azazel
 * Secondary Villain: Meg

Season 2

 * Main Villain: Azazel
 * Secondary Villains: Jake Talley and Dean's Crossroads Demon.

Season 3

 * Main Villain: Lilith
 * Secondary Villain: Bela Talbot

Season 4

 * Main Villain: Lilith
 * Secondary Villains: Alastair and Ruby

Season 5

 * Main Villain: Lucifer
 * Secondary Villains: Zachariah and the Horsemen of the Apocalypse (except Death)

Season 6

 * Main Villains: Raphael and Crowley
 * Secondary Villain: Eve

Season 7

 * Main Villain: Dick Roman
 * Secondary Villain:  Lucifer (hallucination) and Crowley

Season 8

 * Main Villain: Crowley
 * Secondary Villains: Naomi, Metatron and Abaddon

Season 9

 * Main Villain: TBA
 * Secondary Villain: TBA