Brook and Luffy both “died” and came back to life because of their devil fruit, they have both been seen in the Nika pose, and they both befriended the same whale and promised to return… Brook’s Afro is the key for Laboon to remember him after all this time, which is why it’s his greatest treasure. Perhaps Joyboy’s greatest treasure is something similar - after all, it’s certainly something that would make Roger LAUGH!
Credit: Shueisha/Eiichiro Oda, One Piece Chapter 635
Sure, Pluton was said to be a “battleship”, but why can’t a living thing be one of those? Sanjuan Wolf’s epithet is “colossal battleship”, and Franky said a ship is anything that can take you island to island. And in Gedatsu’s cover story, we met a mole named “Boss of the Earth” who dug them from Ukkari Island, under the ocean itself, to arrive at Alabasta. And that mole even had a helmet with Mt. Fuji on it - which we know was located in Wano, and Pluton is coincidentally underneath of right now. Oh, and don’t forget, Pluton had a port underneath Wano to pull ships up to the top called “Mole Port”. Pretty fitting creature for the “God of the Underworld”, right?
Credit: Shueisha/Eiichiro Oda, One Piece Chapter 336
We know the World Government had a "treasure” that was stolen from Hachinosu, and it appears that’s what brought Rocks and Roger to the island. But how did the government get it in the first place? Perhaps there was an inside man who did it on purpose. Kaido, who was on Rocks, had a traitor on his crew after all - which was X Drake. Who kinda looks a little bit like this silhouette that was amongst the Rocks Pirates, who almost has to be Wang Zhi. He and Silver Axe are the only two unkown Rocks Pirates left, and this face was one of the only 2 we didn’t know from Chapter 1096. However, the other one was a zombie in Thriller Bark, which is when Wang Zhi was still alive, leaving this face to likely be Wang Zhi. He kind of already looks like he’s up to no good just in this silhouette.
The “Man Marked by Flames” (MMBF) is the man believed to hold the final road poneglyph. He is said to ride in an all black ship that also creates whirlpools around it. So the first thing to consider is where that poneglyph came from - which is Fish-Man Island (FMI).
That is the last place we saw that one before it was moved, although when and how that happened is a mystery. But considering the timeline of events, it was probably moved during the time Whitebeard held it as his territory. He held it for majority of the Great Pirate Era, and if it was still there when Big Mom took FMI as her own territory, then she’d have probably taken it herself. But in Whole Cake Island, the only road poneglyph she had was the same one she’s had since Roger’s time. So Whitebeard probably moved it before then, likely as protection from either Blackbeard’s betrayal or the fallout from his own demise at Marineford, and the MMBF is someone protecting it for him. But who could that be?
Well, in comes Masked Deuce. Ace’s first mate and right hand man from the Spade Pirates who also ended up becoming one of Whitebeard’s doctors. But he was also smart - he spoke about how charring a ship’s wood can make it stronger, which is maybe why the MMBF rides in an all black ship. Deuce also created Ace’s “Striker”, which was a boat powered by fire, and the Ace Novels showed that he had a flame dial with Ace’s fire inside. Perhaps the whirlpools are made using this same kind of technology.
Credit: Shueisha/Eiichiro Oda/Boichi, One Piece Magazine
