6 Amara

Amara is the Darkness itself and, in other words, the balance of evil vs. good. She and God's (or Chuck's) creation caused a balance in the universe that was essential for creating the Earth and all of the power in the galaxy.

She almost destroyed the world and chose her brother over the stability of their universe, making her a controversial character.

However, she's another character that cannot control the nature of her powers and existence, making her sympathetic in the sense she only did what she was literally created for.

5 Meg

Meg is one of the many villains that goes from extremely bad to somewhat helpful. Initially, Meg is a villain that helps Azazel and later works with Lucifer.

However, she later ends up helping Sam and Dean to fight Crowley when he seeks to use the angel tablet.

Meg becomes one of the most sympathetic villains when she ends up taking care of a distressed Castiel and eventually falls in love with him. Her love for Castiel, and her hatred of Crowley, make her help the Winchesters and sacrifice herself, so they can escape the demon. Her change of heart and admirable sacrifice makes her one of the most respectable villains in the series.

4 Adam

Adam Milligan, the Winchester's half-brother, doesn't become a villain until the final season. After spending a decade in Hell, he allies with Michael because the archangel helps bring him out of the cage and back into the real world, though Michael does this by taking Adam's body as a vessel.

The article is not finished. Click on the next page to continue.