Castiel Novak,Dean Winchester, Sam Winchester,and Raven were at the malt shop when Dean Winchester introduced them to The scooby doo gang

Dean Winchester: I'm Dean and this is Sam,my brother..

Sam Winchester: hi.

Dean Winchester: and these two are angel and demon succubus,our friends Castiel and Raven...

Castiel Novak: Hello...

Raven:Hi, Darlings~