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I won't be very unique here, but I think Doflamingo is blind in one eye. There's some (scant) evidence for that in the Dressrosa arc and I think it'd be the most interesting twist to his sunglasses.
Elbaf is home to the Adam Tree, the tree whose bark occasionally peels off the tree and otherwise is too hard to get. Only barely headcanon, considering Elbaf is norse based, has a giant tree and is in the distant New World (the Adam tree was said to be at the end of the world I believe). So I expect this to be confirmed not before long.
The Tenryuubito are aliens from the Moon. They dress up like astronauts, require "clean air" to breathe.
The Minks are also aliens. We saw a space mink in Enel's lunar adventures.
![](https://i.imgur.com/KAttocj.jpg)
![](https://i.imgur.com/KQ4yyyB.jpg)
Elbaf is home to the Adam Tree, the tree whose bark occasionally peels off the tree and otherwise is too hard to get. Only barely headcanon, considering Elbaf is norse based, has a giant tree and is in the distant New World (the Adam tree was said to be at the end of the world I believe). So I expect this to be confirmed not before long.
The Tenryuubito are aliens from the Moon. They dress up like astronauts, require "clean air" to breathe.
The Minks are also aliens. We saw a space mink in Enel's lunar adventures.