Dean's looking for some of his buddies - and enemies - over at ab_initio_mods. It's a panfandom game that's still fairly new so there are many characters available.
Characters from almost any fandom are welcome and current requests include, Bobby Singer, the Ghostfacers, Anna Milton, Pamela Barnes, Mayor Wilkins, Angel and many others. Please head on over and check it out. We'd love to see even more people here having fun.