I still don't understand why there is a smoothie in Wano
Crack theory, Smoothie is gonna end up draining the flooded sunken Wano and maybe rescuing Big Mom /s.
Pluton is another name for Hades and thus the God of the Underworld. Big Mom has Zeus, Hera, Prometheus and for some reason Napoleon (but this is probably due to her feeling inferior in size with the giants and wanting to be at equal eye level to them, hence her gigantifcation experiments obsession? Punk Hazard was a sort of parallel to this with Caesar's experiments too) and Hades would have been the perfect name for a homie for her, if not her being Hades too instead. She even was close with the OP black market underworld brokers, inviting them to her tea party before.
Also, Yamato has the same name as the famous, especially massive Japanese battleship, so I wonder if she is connected to Pluton too somehow?
There is a type of ship called an icebreaker too, Whitey Bay had one at Marineford for example and the game Cryostatis revolves around one too.
Oh shit!
https://en.wikipedia.org/wiki/French_cruiser_Pluton