I think my WIP nation will qualify as villainous.  They seek to conquer and subjugate all to the will of the Golden Flock.  Some of them want to be loved and others just want to horde sulfur however.

I figured such a strange and dangerous force could be appropriate given the situation and Sigma's mention of forces outside the border.  In terms of scale I am not sure where to place them, since they need to be dangerous enough that they actually are horrifying and not just a mere pest, but not so dangerous that they override all other potential story arcs.