Michael invites the new wolves over to introduce them to the pack. He goes around the room naming the pack in order of rank; first the dominants, then the submissives, the women, and then Castiel.
The new wolves, Dean and Sam Winchester, brothers, Castiel was told, seem confused by Castiel's late introduction. Usually it's easy to spot which wolf is more dominant, especially with young wolves, but Castiel honestly can't tell which of the brothers is more dominant. They stand side-by-side, and Castiel wonders if they are equally dominant, or if they have just been around each other long enough to be able to put aside the dominance contest. Castiel has always been mildly perplexed when it comes to that particular game.
The shorter brother, Castiel isn't sure which is which yet, speaks up about his confusion. He turns to Michael and nods his head toward Castiel, "What is he, a super submissive, or something?"
The look Michael gives him tells him that he's said something wrong, and the new wolf lowers his gaze. The taller wolf puts a hand on his brother's arm.
Michael opens his mouth, but Castiel stands up before he has the chance to say anything. Under normal circumstances being mistaken for a submissive wolf wouldn't piss him off so much, but Castiel is annoyed by this new wolf's arrogance.
"You are young, so I will forgive your blinding ignorance," Castiel says, "I am an omega. I am outside of pack rank. That does not mean I am submissive. It means that if I wanted to, I could make you sit on command, and you would be happy to oblige. You would do well to remember your place."
The shorter wolf doesn't say another word, but he doesn't lower his gaze either. Castiel stares back. The taller wolf smirks at his shoes.
"Sam and Dean Winchester," Michael says, "Welcome to the pack."