They dedicate their lives to hunting down the monsters, after killing their own abusive father years ago. They hunt down the worst type of monsters. I'll leave out some of the more kinkier tags to avoid spoilers.John Winchester/Original Female Character(s).Crowley (Supernatural)/Original Female Character(s).Sam Winchester/Original Female Character(s).Dean Winchester/Original Female Character(s).Graphic Depictions Of Violence, Rape/Non-Con, Underage.