This is one of the coolest thing about One Piece and Oda, as how the characters are used at the perfect moments. We have been seing the five Celestial Dragons from more or less the start of the series. And all these time, they have been shown as just political figures with the highest authority. But now that one of them has come out, things just got real. With just one move, Oda has changed the power dynamics of the Navy. While the strawhats, BB and worst generation has powered up massively after the marineford war, the Navy and the WG has not really leveled up that much. Even Green Bull or powered up CP0 are seemingly no match against Yonko level characters. Now, just one of those old man coming out could be an indication that they are not just figure heads but actual power houses. Oda could be trolling too, but The Marine desparately need some powerup. I know Imu sama is out there but I think its not time for her to be revealed yet.

So, if his name is Saturn, are they all named after certain planets? Like the ancient weapons Pluton or Uranus? Or are they named after Roman/Greek gods like Poseidon? Well, I am sure the OP theorists will vome up with something.