Tama Tama no Mi

The Tama Tama no Mi is a Paramecia-type Devil Fruit that turns the user's body composition into that of an egg and allows the user to evolve into a chicken and become stronger when their body is destroyed. It was eaten by Tamago.

Etymology

 * "Tama" is short for "Tamago", the Japanese word for egg.

Strengths and Weaknesses
The greatest strength the fruit gives is the ability to regenerate from severe injuries that would normally kill a person by evolving from an egg to a chicken. The new forms the user gains also drastically increase their fighting ability, to the point where the second and final transformation makes the user a "true swordsman".

However, the user is left defenseless while regenerating. Also, it seems that their body is still composed of an egg even after evolving, as seen with Tamago's Viscount Hiyoko form. Otherwise, the user is affected by the standard Devil Fruit weaknesses.

Usage
With this fruit, Tamago's body is composed of an egg, giving him the name Baron Tamago. He can then access two other forms known as Viscount Hiyoko and Duke Niwatori.

Viscount Hiyoko
Viscount Hiyoko is Tamago's second form. Tamago gains a beak and a pair of small wings, as well as two knives. Tamago is stated to be strengthemed in this form, but any further abilities of this form have not been seen, as it was quickly destroyed by Pedro in its only seen usage. "Hiyoko" means "chick" in Japanese.

Duke Niwatori
Duke Niwatori is Tamago's final form. Its appearance is unknown, but it is stated to be a "true swordsman". "Niwatori" means "chicken" in Japanese.