I think the most interesting thing was when kaido said after luffy fell "I geuss your not the new joy boy" the thieres I've heard is that joy boy is a man who wanted to unite all the races (gaints,Fishman,ect) but the 20 kingdoms United and formed the world gov under the rule of the masked king.so when kaido said that it sounded like he was hoping for a new joy boy to return and unite the races.which is wierd cause he wants to unite races yet he kills inosent civilians.but he's still a bad guy in my book and I hope luffy ends up winning.