So, what Major Arcana aren't used, yet, as a HOTD boss?

I can only think of one - the Devil - now that Scarlet Dawn is out. I'd like to see it finish with that as the final boss, with the other bosses either souped-up versions of past bosses, or new bosses based on the face cards and suits of the Minor Arcana (King, Queen, Jack, Page, and Pentacles, Swords, Wands, and Cups).