Board Thread:False Info and Speculative Discussion/@comment-78.130.135.139-20140908205353/@comment-4295751-20140909201655

but I think what nogitsune Stiles did only repelled the oni. Because before and after that, they were always 5. They became 4 only when Allison killed one.

Oni also have blades even werewolves cannot heal. Berserkers skin seem somewhat impenetrable, but I guess like they did with the mountain ash protection in Scott's house, they will eventually find a way through and unless berserkers have silver, they stand no chance.

Not to mention the finale revealed one fine blow to the head will also finish off a berserker, so..