User blog comment:Battlefield4us/Interview with Monty Oum/@comment-5041507-20140711180456/@comment-3146930-20140712010854

I am one of the proud few that doesn't see Cinder as the main threat. The main bad guy, at least a good one, always stays in the shadows at first and we only learn of them from other characters. Cinder is cool and everything, but if a single Hunter can stand toe to toe with her, then she isn't deserving of being the main villain. She most likely works for someone that is using her and the WF as his own personal playthings.

I also think that the final boss at the true end of the show will be the original Grimm that all Grimm come from, like a Grimm Gravemind type thing.