This will be less of a theory and more-so speculation, but there is one thing I will propose that could lead to a lot of interesting questions and dynamics. First off let's look at the recent chapter. We finally get an inside glimpse of Zou that's more than a couple of panels. There are ancient ruins, the Mink Tribe, and etc. But one thing is clear and that's SOMEONE has been wrecking shit: This mirrors what we saw of Weevil in the very first chapter of this arc, chapter 802: Because of this, I think it's pretty clear that the implication is that Weevil is on Zou, possibly even being the antagonist of the entire arc. Notice how they point out the destruction is fairly recent and "fresh" so to speak, which from what we know of Weevil is exactly the type of thing he would do. But why would he be on Zou, you say? Marco, the Phoenix Like already stated in 802, we're likely to see Marco and the rest of the Whitebeard Pirates so. To be specific, I think the Whitebeard Pirates are on Zou, though it's possible Marco is on Zou by himself. However despite this I do not think this arc will have a central antagonist. In fact, I think Weevil will eventually be a friend to the Strawhats after a single fight, to his dismay of his mother. But rather, Ms. Balkin will be the antagonist of Zou. Why would the Whitebeard Pirates and/or Marco be on Zou? It's because of Kaido, who is stationed on Zou doing very evil things to the Mink Tribe, perhaps even making SAD out of them so it can be made into artificial Zoan types. It's hard to gauge, but as everyone seen in the recent chapter, Zou is EMPTY. Where is all the Minks at? ...But what if there was more to it than that? What if there's something Oda is hiding from us like he does every single arc we speculate endlessly about until the thing finishes? Here's what I'm proposing as a possibility: Marco used to be a part of Kaidou's crew. For one, how strange is it that he's the ONLY Mythical Zoan we know of in the entire series? (Edit: Ignore that, Sengoku. >.>) With the implications that Kaidou is a Chinese Dragon thanks to Momo's comments in Punk Hazard, this suggests to me as well that Kaidou is a Mythical Zoan. Secondly, in Chinese mythology, the Phoenix and the Dragon are essentially a pair. In Chinese mythology both make up the Male/Yang (Dragon) and Female/Yin (Phoenix) aspect. Alongside those there is the White Tiger and the Black Turtle that makes up the Four Beasts of Chinese mythology. I believe it's possible Oda might draw inspiration for this just like a lot of other anime/manga do, and Marco would fit the bill. I also find it strange that Marco was strong enough in Marineford to combat the Admirals himself, which suggests he has a lot more up his sleeve than the average joe, and we're definitely going to see him sometime in the future. Here's my theory: Kaidou and Marco ran a crew together in their younger years (like Dorry and Broggy). One was the Chinese Dragon (Yang) and one was the Phoenix (Yin), with a crew full of Zoan users they were some of the strongest pirates in all of the Grand Line. However, Kaidou wanted MORE, and in the process he became this immortal being of some sort. This drove Kaidou MAD, to the point where he started actively trying to commit suicide as well as terrorizing innocent people for shits and giggles. This caused Marco to leave the crew, as his old friend was no longer the same man he was. Eventually, Marco joined up with Whitebeard, who accepted him as "family" despite his connections with Kaidou. Without the balance of "Yin" to Kaidou's crew, the crew became war-farring centric, with Kaidou's goal to build a huge army for an inevitable war he might even cause himself. Despite all of this, it's always been Marco's life goal to get Kaidou back on the side of reason. He wants his friend back, even if it took Whitebeard's dominance over him as an Emperor to keep him in line. With Whitebeard out of the picture, however, Marco now is on his own. _______________________ Tell me what you guys think. I know this is merely speculation so keep that in mind, lol.