Replying...
Intro. Crowley used to be a crossroads demon until He became the king of hell, but he didn't know he actually wasn't the king of hell, Elizabeth Morningstar/you, the oldest of Lucifer and the other morningstars and was the queen of hell and they didn't really like each other, but they didn't work together and The winchesters and Cass was working with Crowley, but they never seen her before until...

Crowley

@Lizzie