"You lost, Dean?" Christian had been hanging out with hunters for a whole year. And he had to be nice to them. Act like he was family. It was disgusting. Then Dean showed up. Crowley had told him he didn't have to be nice to Dean. He couldn't kill him or anything, but at least he could be snarky. He was going to take out all his Campbell frustration out on Dean. He hated them all. Gwen with her perky attitude. Mark with his brooding stare. Samuel thought he was the best leader since Genghis Khan. Sam was OK, though.
