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 to Supernatural.

The genre is divided into the main villains and the secondary villains, the main villain are not always a person or a creature, some times it's only a natural happening or something that is going to happen.

Season 1

 * Main Villain: Azazel
 * Supporting Villain(s): Meg

Season 2

 * Main Villain: Azazel
 * Supporting Villain: Jake Talley

Season 3

 * Main Villain: Lilith
 * Supporting Villain(s): Demons / Gordon Walker

Season 4

 * Main Villain: Lillith
 * Supporting Villain(s): Alastair / Ruby/Uriel

Season 5

 * Main Villain: Lucifer
 * Supporting Villain: Four Horsemen of the Apocalypse / Zachariah/ Meg

Season 6

 * Main Villain(s): Crowley / Raphael
 * Supporting Villain: Eve/Alphas

Season 7

 * Main Villain: Dick Roman
 * Supporting Villain: Edgar / Lucifer's hallucination