Hedo Hedo no Mi

The Hedo Hedo no Mi (主席主席) is a Paramecia-type Devil Fruit in which the user can grow and have a second head. Hedo meaning “Head”, in both Viz Manga, and the FUNimation dub, it is called the Head-Head Fruit.

Strengths
The main of this fruit goes into play whenever it is eaten; the fruit starts become the second head for the user. Then within a few seconds, a second will pop out of the user’s body. Most of the times it seemed that it would pop out the back and behind the first head. This adds some advantages, such as : The user has twice as much senses, they have twice as much memory and smarts. They can eat twice as fast, they can breathe much faster to help the user last longer in battle. Also it does give the user a pair of eyes in back of their head, the last main strength is that. It was revealed to if the user gets one of his head cut off the other head will take over, if it was the second head. But there is a problem.

Weakness
It would seem that the second that does appear to be the popular opposite of the user. Such as if the user was evil, the second head would be extremely good. But that also poses another threat to the user, such as they must remain in control or the second head could take over. So the user most be the dominant one among the two, other than that the user will suffer the standard weakness of the devil fruit.

Usage
This fruit’s usage is more of a battlefield advantage than anything else, since the user gets a second head. They can increase the following:
 * Senses
 * Haki
 * Stamina, due to the fact that the user is able to breathe in twice the oxygen into the body.
 * Intelligences
 * Food Intake
 * It has also shown that this can be used in another way to, that the user can have the second head go back into his body if he wished.