Wait, is there actually a King and Queen or are we just assuming because of Joker and Jack that there must be some kind of card suit theme? Because who would be Ace? I mean, OUR Ace is dead.
Oda did an interview for a magazine if i remember correctly and the magazine was allowed to shoot pics of his workplace, including his desk, where you could see a manuscript that said "Kaidou, King, Queen and Jack"