When we last saw Castiel at the end of Season 4 he was standing resolutely next to Chuck - I am the prophet, ready to hold off heaven’s most fearsome power, an archangel.
 
Season 5 opens with the news that Castiel was smote, like a water balloon filled with Chunky soup…not to worry, though, our Cas returned, brought back by God and he’s determined not to take any of Zachariah’s crap anymore.
 
 

“Now put these boys back together and go, I won’t ask twice.”
 
Another fine entrance, Cas.
 
We quickly realize, however, in Good God, Y’All that while Cas has some tricks up his sleeve -- Enochian carvings on Winchester ribcages anyone? -- all is not well.  He can’t heal Bobby and Cas picks up his newest accessory to his wardrobe, enter Cas’ cell phone.
 
Free to Be You and Me finds Castiel struggling greatly with human interaction. He stands way too close to Dean… “Cas, we’ve talked about this; personal space.” Has little to no understanding of the meaning of subterfuge… “It’s the angels and demons, probably; they’re skirmishing all over the globe.” Can hold his liquor but not the truth from a prostitute and gets him and Dean thrown out of a brothel. However, Castiel does know how to handle an archangel, a little holy oil from Jerusalem (where else) and a well-laid trap gets the information they need, although not all of it, nor the information they wanted, and a quick escape… “Maybe one day, but today you’re my little b****.”
We’re treated to yet another incarnation of Castiel in The End; future, human Cas, loves the ladies, is stoned out of his mind, completely cut off from heaven and remembers fondly that he likes the Dean of 2009. This Cas is loyal to a lost cause, while somewhere, somewhen, five years earlier, present Cas is waiting silently by the side of the road for Dean to get a few hours of sleep and then carry on with his plan to find God. Cas may not be a good liar and he may continue to struggle with his cell phone… “This isn’t funny, Dean, the voice says I’m almost out of minutes.” -- but he is loyal and he understands that timing is everything… “We had an appointment.”
Then there’s I Believe The Children Are Our Future…really, what more can be said…Action Figure Castiel!
You can choose your friends; you can’t choose your family. Castiel has been blown up, turned into an action figure, run out of a brothel, killed (in the future) and now he is on the receiving end of quite a beating, Changing Channels is a lot of fun, to everyone that is but Castiel – yeah, and Sam didn’t get away without some pain and embarrassment, and sure, Dean got shot – again – but this is a Castiel article.
Abandon All Hope: Castiel, meet Ellen Harvelle. One of my favorite meetings between Supernatural characters was Ellen and Jo and Cas. From Cas slinging shots with Ellen: â€œAll right, big boy.” â€œI think I’m starting to feel something.”
To: â€œHaven’t you ever heard of a door handle?” â€œOf course I have.”
I’m so glad we got a chance for these characters to interact, if only briefly.