‘Supernatural’ Season 12 Spoilers: Castiel Meets An Old Enemy? ‘The Walking Dead’ Alum Cast In Mysterious Role

“Supernatural” is going to show more personal stories about angel Castiel (Misha Collins) in Season 12. Although fans are excited with Dean (Jensen Ackles) and Sam Winchester’s (Jared Padalecki) mother Mary (Samantha Smith) coming back to  hunters’ lives, the CW series will not sideline Castiel.