User blog comment:Blackfog05/Poseidon, Uranus and Pluton Relation/@comment-121.54.32.245-20120916164217

Shirahoshi was the first ancient weapon identified. . . The thrill is now the identity of Pluton and Uranus. ..

Pluton I think is not the Noah since Nico Robin has already mentioned to Neptune that only one ancient weapon is located in the Fishman Island as written in the ponyglephs in Skypiea. . . Pluton I think should be more of a battleship that can operate in Land (The other ancient weapons rule the other two parts of the world - the sea by Shirahoshi/Poseidon and the sky by the still-unidentified Uranus). I think the blueprint of this weapon was already handed to Franky by Tom which i believe was already the blueprint used in building Sunny. So I think Sunny is the Pluton. Let's see the Sunny once a battle in Land happens. ..

I realy have mix idea as to who/what is Uranus. . . But based on the incidents that happenned in the the Goa Kingdom and Loguetown, it seems that Monkey D. Dragon has the control of the weather/sky and so, i think he is the "Uranus" :-)

All these three ancient weapons are related to Luffy - Poseidon being Luffy's friend, Uranus being Luffy's Father, and Pluton being within Luffy's friend-Franky.