"It was a long time coming," he tells us. "[I have] mixed feelings about it. It's exciting to have other prospects now and it's fun to do other roles, so I'm looking forward to doing some other stuff. I will miss the old crew up on Supernatural in Vancouver." He then clarifies that he'll miss seeing the gang on a "day-to-day basis."

As of now, Collins would only confirm that Castiel will appear in the first two episodes of season seven opposite the Winchester brothers, Sam (Jared Padalecki) and Dean (Jensen Ackles). However, fans looking forward to seeing Castiel's unexpected (and refreshing) brand of humor ("Hey assbutt!") should prepare themselves for some changes.

"The character is not providing that comic relief anymore, which I think is fine. I think that sort of ran its course," Collins says. "It's one of the things that's great about the show. They don't rest on their laurels. Just because something is working, doesn't mean they keep doing it. They like to change it up and try something new and it doesn't get stale—and that's cool."