Board Thread:WARNING ALL USERS False Info\Spoilers/@comment-67.84.27.4-20130821155713/@comment-13895380-20150713153929

I hope Deucalion stole Ennis' power or else he just killed Ennis for no reason. :/

I think Demon Wolf is a special type of wolf, and it is very powerful. It is not just a name given to Deucalion because of his demonic features and evil deeds, because Jennifer said "then I'll have enough power to kill A Demon Wolf". So we can assume that there are other Demon Wolves, and Jennifer was talking about the EXTRA power she would get to kill one, so we can infer that Demon Wolfs in general have emmense power.

I think that Demon Wolves are antithesis to True Alphas, which is why Scott became a True Alpha in Season 3, with Deucalion. They're both legendary, extremely strong forms of werewolves, but they were achieved through totally opposite paths. Deucalion seems to be the character foil to Scott, since they were both optimistic and moral people, but Deucalion went through the evil path to become a Demon Wolf due to unfortunate events, while Scott was able to persevere and ascend to the True Alpha status through good, brave character.