Originally Posted by Dagoro
Something else to note, Law said that once they have Caesar things will snowball really quickly and there will be no going back.
Could it be that Joker is also connected this Emperor they want to take down ?
I can't imagine Caesar working for one of the Youkon directly. It could be that Joker is facilitating thinks for Caesar under order from one of the Youkon, and if Caesar is captured he could be used as a catalyst in making one the Emperors vulnerable down the line.
Just thinking about how this could spiral out of control hypes it for me lol.
My money for "joker" is one of 2 possibilities. The first is Akainu. We all know he has a dark side to him, and is willing to do anything or sacrifice anyone in the name of absolute justice. I don't think he would have a problem associating with mad men, and experimenting on children to achieve his goals. However, despite his position as fleet admiral even he answers to Kong and the Gorosei, so would have to hide some of his more questionable doings from them.
The other option would be on of the Gorosei. I'd imagine when making decisions those 5 guys pretty much vote on what to do, and the majority rules. That doesn't mean the losers have to accept it though. I could see one of them (probably all of them) having secret ventures going on the side kept from each others view.