Board Thread:WARNING ALL USERS False Info\Spoilers/@comment-69.121.172.69-20130820040029/@comment-11533671-20130824173558

PrimeEra:

I disagree with the idea that an Alpha can't take another Alpha's power. I'm not the only one that assumed that Deuc did this. The synopsis of that episode has been given on many other internet sites and just about every source concludes that Deuc took Ennis' power. Again though, since it hasn't been specifically addressed then it is really a matter of opinion.

Rewatch S1 "Co-Captain", in which Derek admits to joining his Uncle. In particular, Peter and Derek are trying to convince Scott to join "their pack". Since Peter is obviously the Alpha and Derek is a Beta then this makes Derek the Beta in Peter's pack.