Board Thread:False Info and Speculative Discussion/@comment-544940-20160226102622/@comment-11533671-20160229084848

^That's not entirely true. We have only seen or been told about Betas taking the Alpha spark of their own packs' Alpha. Derek may seem to be an exception but he took the Hale Alpha spark from Peter so it never left the Hale family pack.

Voltron Wolf killed their own Alpha, as for the other Alpha Pack members, we don't know how they gained their status or when but we know they killed their Betas for added power.

I can't recall a single Alpha werewolf whose spark was taken by any werewolf outside of their pack. As I mentioned, Derek seems to be the only one BUT I think it's safe to assume that he was only reclaiming the Alpha spark that belonged to the Hale family to begin with so I'd say that counts insofar as being able to say that we've only witnessed Betas take the Alpha spark of their pack leader.