Kinko Kinko no Mi

The Kinko Kinko no Mi (金庫金庫) is a Paramecia-type Devil Fruitin which allows the user to become a living vault. Kinko meaning "Vault”, in both Viz Manga, and the FUNimation dub, it is called the Vault-Vault Fruit.

Strengths and Weakness
The main strengths of this fruit are that it allows the user to become a living vault to store anything from a ship to even money. The user has an unlimited amount of the space and in turn the more that is stored in the vault the bigger the user gets. This literally makes King the hakuris treasure room, thus why he was charged with the task to store all of the hakuri crews money and treasures in him. However it was also revealed that King can even trap living beings in this, much like the Dashi Dashi no Mi. The user can trap the humans or such in here, this was proven during the Mother Hakuri Attack’s Arc. King had stored several of Germlin’s goblins within him and then released them to attack others. It does appear that the user only suffers the standard weakness of the devil fruit, also if the user did let things out of them they would grow smaller and if they store more they will grow bigger to the point that they couldn’t really fit into anything.