User blog comment:Alexa12/The Finale Sucked./@comment-3570981-20120815213000/@comment-4091815-20120816010550

From all evidence to date, to be an Omega, you have to be physically alone.

None of the werewolves are alone and as long as they are working together they are a De Facto pack. You folks act like the pack thing comes with membership cards, it doesn't.

Peter is part of Derek's family - that makes him part of the Hale Pack just like Derek was part of Peter's pack in Season 1 even though he didn't know Peter was the alpha.