Jake Jake no Mi

The Jake Jake no Mi is a Paramecia-class Devil Fruit that allows the user to become a jacket and be worn by others, becoming a Jacket Human (ジャケット人間). "Jake" comes from jaketto, the Japanese way of pronouncing the word "jacket". It was eaten by Kelly Funk.

Strengths and Weaknesses
The Jake Jake no Mi's main strength is to allow the user to become a full-skin jacket that others can wear, humans or animals. The user then can control the wearer's body and gain their abilities, increasing their strength.

This fruit has no known weaknesses, aside from the standard Devil Fruit weaknesses. However it so far requires the use of another person for it to be effective, it is unknown if the fruit can be useful if the user is alone.

Usage
Kelly basically transforms himself into a full-body jacket, allowing his brother Bobby to wear him. This allows Kelly to gain his brother's enhanced strength.
 * Jake Jake Ninin-baori (ジャケジャケ二人羽織): Kelly transforms into a jacket, allowing his brother Bobby to wear him. "Nininbaori" (二人羽織り) is a Japanese comedic act where two people wear the same large coat (haori) and pretend to be one (hunchbacked) person. One person is the "face" and the other is the "arms". Humor arises from the arms never being coordinated with the face.
 * Rarara Rambo (ラララ乱暴（ランボー）): A combo attack performed by Kelly Funk whilst controlling his brother's body. Kelly performs a flurry of punches, with a similar appearance to Luffy's Gomu Gomu no Gatling attack. Bobby's powerful body gives force to Kelly's ordinarily weak punches. While it was capable of knocking out Boo instantly, it was ineffective against Sai, who moved quickly enough to not only dodge the punches, but use them as footholds to knock out the combined pair.