Who are they supposed to be? ZZ Top?
Law, Straw Hats and allies make landfall at Dressrosa, and Law splits the group into three teams to carry out the plan. Law, Usopp and Robin will take Ceasar to the island of Green Bit that is north of Dressrosa for the handover. Since ships can't land at the Green Bit, the group has to travel by land and over the bridge from Dressrosa to Green Bit. Nami, Chopper, Brook and Momonosuke stay to guard to ship, and Law gives Nami a map to Zou and tells Nami's group to sail to Zou if something bad happens. Luffy, Sanji, Zoro, Franky and Kinemon make up the team that will locate the destroy the Smile Factory and rescue Kinemon's friend. The group heads into the port town of Acacia and are immediately caught up by the dancing, the aroma of flowers and food, and the living toys walking on the street. The group go into a restaurant in disguise to have a meal and to decide how to proceed. Nearby, a blind man is playing roulette with a group of thugs in black. The blind man is making bets on the right colors, but the thugs lie that the ball lands on the other color so they can take the man's money. The blind man makes one last all or nothing bet and bets on the right color. The thugs are about to swindle the blind man again, but Luffy steps in and tells the blind man that the men in black have been lying to him. The thugs are about to attack, but the blind man draws his sword a bit and the thugs are crushed into a big hole in the ground.
The alliance lands in Dressrosa, and Luffy wastes no time in getting himself into a situation. Luffy has never been the type to keep a low profile, but on the other hand he is the hero and is needed to defeat whatever strong foe that Doflammingo is going throw in his way. The blind man seems to have some sort power to increase gravity and crush his opponents. Luffy can see the man is strong, but the guy doesn't seem to be part of Doflammingo's group. Could the blind guy be whoever the Marines are sending to Dressrosa to deal with the Straw Hats? Every story arc have their interesting side characters.
From the chapter, Dressrosa looks like a prosperous and vibrant country on the surface. Doflammingo is a keen businessman, so perhaps he was doing a pretty good job with running the country. Of course, Dressrosa is Doflammingo's territory so there could be danger at every turn for the Law-Straw Hat alliance. Given how prominent the living toys are featured, I'm guessing one or more living toys are going to play an important role in the arc.