Mochi Mochi no Mi is a new Devil Fruit that was introduced at Whole Cake Island. It was eaten by the strongest Sweet Commander, and the second son of Big Mom, Charlotte Katakuri. This Devil Fruit is classified as a Special Paramecia type. At first, it was said to be Logia Type of Devil Fruit. However, later, it was changed to a special Paramecia. At first, many thought the change in the type of Devil Fruit might cause it to be weakened. But that wasn’t the case. It is easily one of the most overpowered Devil Fruits in One Piece.
With the powers of the Mochi Mochi no Mi, Katakuri can create, control and turn into Mochi, which is a sticky substance. Normal Paramecia, can either create and control or just be the substance itself. But, with Charlotte Katakuri, and the Mochi Mochi no Mi, it is different.
He can do all three of these things with it, which is why it is a Special Paramecia. Katakuri can create huge weapons with its power, and people can get easily trapped in it, just like Luffy was. Water does reduce the stickiness of the substance, but that’s all. It doesn’t destroy the composition of Mochi. The viscosity of the Mochi is so much that a large caliber gunfire can’t even pierce it.