The Uro Uro no Mi is a Logia-type Devil Fruit that allows the user to create, control, and transform into the Void at will, turning the user into a Void Human (虚マ人間,Uro Ningen?). It was eaten by Date D Ezio
The first and foremost strength of this fruit, as demonstrated by Ezio is that he is able to create, control, and transform into the Void at will. The void being a an endless space that can store anything from small things such as money to even the likes treasure to food, even ships. It can also allow the user trap others within the void as well. The void acts much like a trap the only one who can freely go to and from this void is the user.
The user can trap others or attacks into this void and release it when he or she sees fit. The user can also transform into the void, in which their whole body is acting as this void sucking everything in its path. Also the user of the can also do the opposite of this, the user can keep things from getting into this void. By closing the void, which the forms a barrier like formation around the user or wherever the users wishes.
The next strength of this strength as shown by Ezio is that he is able to "negate" Devil Fruit abilities, however in reality. He can grab onto others and open the void up, thus putting the attack into the void and Leonardo can sent it back at the opponent whenever he wishes. He has shown to have stored whole islands and living beings, it was told that one could survive in this void. But of course the user needs to suck up supplies and such within the void. But the most fearsome strength of this fruit is that, the user is able to store anything he or she wishes within their own void.