"I feel like this Leviathan Cas is what happens when you mix Misha and tequila." Well, it's actually what happens when you mix Misha with a bad case of the stomach flu cause he was really sick when he shot this scene.
Leviathan Castiel , whilst I hate those things his smile is still so gah and admittedly in episode one when he went hmm Cas is erm GONE it did make me laugh a little just the way they did it like a hyper kid.
The Different Variations Of "Supernatural's" Castiel
Castiel by lionstiel: "…And I will show you something different from either / Your shadow at morning striding behind you / Or your shadow at evening rising to meet you; / I will show you fear in a handful of dust.