Supernatural Cast: Where Are They Now?
7. Mark Sheppard
Mark A. Sheppard portrayed the smarmy master of crossroads demons in Season 5 who turns traitor against Lucifer and helps the Winchesters in their quest to rid both Hell and the world, itself, of his master.
In the end, Crowley becomes the new King of Hell and continues his duplicitous on-again-off-again alliance with the Winchesters for several more seasons. Crowley ended the series with the ultimate babyface turn allowing himself to be sacrificed because he was 'tired of all the politicking' in Hell.
Sheppard himself has an interesting acting background. He started out as a session musician in Europe before moving to the US. His father, a venerable actor himself, was the narrator for the first four Medal of Honor games as well as Ignatius Cheese in Escape From Monkey Island.
Mark has spent his time since departing Supernatural in 2017 by playing recurring character Willoughby Kipling in Doom Patrol and was most recently the voice behind Perseus operative Roman "Knight" Grey in Call of Duty: Black Ops Cold War.