Evil Colonel Sanders

Sam: You get a name? Dean: Nope. But... from his description? Evil Colonel Sanders. Asmodeus. – Sam and Dean Winchester, 13.07 War of the Worlds

"Evil Colonel Sanders" is a description of Asmodeus that has caught on as a a fandom nickname, due to Asmodeus, with his white suit, beard, and Southern drawl, resembling the founder of Kentucky Fried Chicken. In 13.07 War of the Worlds, Dean actually refers to Asmodeus as "Evil Colonel Sanders" and in 13.13 Devil's Bargain, Asmodeus smells a piece of fried chicken before he throws it away in disgust. This was taken by fans as a shout-out to the aforementioned fried chicken company. In 13.20 Unfinished Business, Gabriel even calls Asmodeus a "Kentucky Fried B-Hole."

Kentucky Fried Chicken founder Col. Harland Sanders.

Asmodeus inspects a piece of fried chicken.