When joy boy was first reveal on fish-man island and not to mention about the three weapons like we know that shirahoshi is Poseidon but we know nothing about the other two, pluton and Uranus but this is my opinion if shirahoshi is the ancient weapon of poseidon as a living being, so are the pluton and uranus and why these weapon even existed in the first place that can destroy the world that can wipe out the lives of humanity with one strike if you ask me and more importantly how come joy boy is the one that know about these weapons more than anyone else and what is he or rather what legacy he left in his time during 800 years ago and we also know about the will of "d" why is it important i wonder if you guys know let me know.......( joy boy what did you really leave behind beside the one piece ) will we ever know?
