User blog comment:Neowitch/668 - Pet Axolotl/@comment-4904935-20120524061149/@comment-4820500-20120525234937

I just thought about this but it could be possible that kaido is joker. That could be part of the reason why law didnt want joker to know he was on PH because Kaido is the yonko he wants to take out so law could want to fly under the radar while still keeping an eye on what kaido could be working on.

Also when the yonko where shadowed kaido's face looks like a sinister version of the comedy mask(from greek comedies & tragedies) so that could explain why his alias would be joker.

p.s. @ zori you have a point about characters not usually having the same name & i thought the yeti bro might have been the cyborg drake met but they have different body types and the cyborg has shorter legs than the yeti bro but it is possible that law tweaked them like he did the prisoners or they could have gotten more realistic looking cyborg upgrades in the 2yrs & if they are the same that would help explain why the yeti bros faces werent revealed before they were beaten by luffy.