screenrant.com - BY RHYS MCGINLEY - Alongside possession, there are certain creatures in Supernatural and special cases like the Mark of Cain that can control the Winchesters.
screenrant.com -BY PADRAIG COTTER - Sam and Dean Winchester went through a lot of family troubles on Supernatural, and here's each time they had to kill members of their own clan.
screenrant.com - BY RHYS MCGINLEY - Supernatural's Sam was thrust into doing evil things by way of possession multiple times but also acted as a villain through his own choices.
screenrant.com -BY RHYS MCGINLEY - Supernatural's Sam Winchester was certainly one of the show's main heroes but he also had plenty of moments where he acted like a major villain.
screenrant.com -BY TRICIA MAWIRE - Death never stuck when it came to the Winchester boys on Supernatural. As sad as their endings were, their resurrections were even more surprising.
screenrant.com -BY MAE ABDULBAKI - Supernatural ran for 15 seasons, bringing fans the beloved Winchester brothers. However, there was a point in time when they weren't part of the show.