Although already the "King of Hell," Firefly/BSG alum Mark Sheppard has been given a promotion. He'll be a series regular come Season 10 of The CW's Supernatural

Sheppard, who plays Crowley, has been a recurring fixture on the series for the past four years. And given the events that took place in the Season 9 finale, it makes sense now for him to have an expanded role going forward. This news comes on the heels of actor Misha Collins, who plays Castiel, also getting bumped up to series regular status.

Matt Fowler is a writer for IGN. Follow him on Twitter at @TheMattFowler and Facebook at Facebook.com/Showrenity