Bari Bari no Mi

The Bari Bari no Mi is a Paramecia-class Devil Fruit that allows the user generate barriers for defending or striking at will, turning the user into a Barrier Human (Kekkai Ningen). It was eaten by Bartolomeo the Cannibal.

Strengths and Weaknesses
The main strength of this fruit is that it allows the user to form invisible barriers. This protects the user from frontal attacks and deflects them back at the attacker, causing backlash damage while none for the user. The barriers are strong enough to defend against even a fishman's high-powered punch, which injured the said fishman's arm in return. Even Elizabello II's punch, which could allegedly take down a Yonko, could not breach the shield. The shield can also be used for offensive purposes, launching forward to create powerful forces to strike down the targets.

It shares the same weaknesses as all Devil Fruits.

Usage
Bartolomeo basically uses this fruit's power to protect himself in combat, sitting idly by while his unsuspecting foes attack him and injure themselves. He can also use the shields offensively to strike down his targets.
 * Barrier Crash: Bartolomeo forms a barrier in front of himself and sends it towards enemy so fast it crushes his enemy easily. It was used first time to defeat Elizabello in Corrida Colesseum. He also used same ability with his leg against Hack but it is unknown it is the same or not.

Trivia

 * In some beliefs crossing the middle and pointer finger can ward off evil and undo curses, Bartolomeo himself mentions that you can protect yourself by crossing your fingers as he uses his ability.