A.N. So I was trying to figure out how I could branch off into writing other characters and then I thought about Cas, and then I thought "well when did he start being called Cas." And funny useless fact, there is never a scene where the nickname Cas is tried out, in 4x03 he is Castiel, in 4x04 Dean calls him Cas. So yeah I wrote this. First time writing Cas so I hope I did okay. Thanks as always for reading, you guys don't know how much it means to me. Spoilers up to 4x03. Isn't supposed to be Destiel, but hey you take it any way you want!

Disclaimer: Nothing, but the words I have written, are mine.

Castiel was feeling something, that if he had to describe it, was close to annoyance.

He had just brought Dean back to the present and informed him that they were unsure of the direction Sam was headed in and then he was supposed to leave. Those were his orders. But….the pain on his charges face, the way his eyes lit up with it…Castiel found himself rooted to the spot.

"What exactly is it you think he is up to?" Dean asked whirling on the angel.

"I don't presume to know."

"Oh you don't presume? Well this is my brother we are talking about Cas, start asking questions!"

Castiel opens his mouth to respond, but realizes almost at the same time as Dean what he has just been called. He bristles.

"I prefer to be called Castiel."

Dean watches him for just a second, mulling over the nickname in his mind and throwing a smirk at the newly named 'Cas'

His eyes flash with defiance. Hell may have taken a lot of things from the man, but his streak for rebellion was not one of them.

"And I prefer to be called Inigo Montoya, but I don't think that is going to be happening anytime soon."

The angel tilted his head at the human, wondering why he always felt the need to be so difficult.

"I don't understand that remark." The man's name was Dean Winchester, what sense did it make to call him by any other name?

"Don't hurt yourself trying." He grumbled, shuffling his coat on and meeting the heavenly beings eyes.

"Well whatever, I got to go find Sam, so I'll see you the next time you decide to pop in at the worst possible time. Try after dinner, you can usually find me taking a dump."

"You are mocking me."

"Nah, you just need to lighten up." And then he was gone leaving the angel to stand and ponder in his absence.

He sincerely hoped that the butchered version of his name would not be one that was in constant use. However staring at the door where Dean Winchester had disappeared through, he doubted it.

Cas. He supposed it might grow on him…as much as the hunter already had.

A.W. Well what did you think? I personally, kinda like it :D