Well, our first BBEG was Prince, a winter court loyalist who I think was an elemental.
He has a crown that can create loyal hobgoblins (of a limited sort) and was entered into a competition with another member of our motley by their keeper, who they shared, and supposedly the 'winner' would inherit their...domain or power or whatever.
Anyways when we finally met up to speak with him (he wanted us to pledge loyalty to him) I managed to get him to agree to a pledge of servitude to us, and forced him through it to order the freehold (which he rules) to leave us all alone.
We left, and now (a couple weeks later) we're telling the local anti-supernatural military forces (there's an army base nearby investigating the supernatural, they have Mages working with them) about him so they can kill him or whatever they want.