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I will update
1- Luffy's DF is Hito Hito no Mi, Model: Nika (ヒトヒトの実 モデル“ニカ” Hito Hito no Mi, Moderu: Nika, Viz: "Human-Human Fruit, Model: Nika"),
2- Commonly known as the Gomu Gomu no Mi, is a Mythical Zoan-type Devil Fruit
3- "Gomu" means "rubber" in Japanese.
4- In the Viz Manga, 4Kids and Funimation dubs, the Gomu Gomu no Mi has been called the Gum-Gum Fruit, "gum" being a soft, cohesive substance designed for chewing, with elastic properties.
5- Over 800 years ago, a certain person ate this Fruit, and committed acts making him known as "Joy Boy". For the next 800 years, the World Government then tried to get their hands on this Fruit, without success.
6- The ability of this fruit is to transform into Nika: a "liberating warrior" with a rubber-like body and the power to fight according to his whim, while making people smile.
7- In its awakened form, this fruit increases the strength and degree of freedom of the user's elastic body, granting it "the most extravagant powers in the world", according to one of the Five Elders.
8- Like all Devil Fruits, it is weak to Water, Sea Granite, and other standard Devil Fruit weaknesses.
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Trivia :
1- One Piece Magazine Vol.6 features an illustration of Roronoa Zoro having hypothetically been granted the Hito Hito no Mi, Model: Nika's powers. Eiichiro Oda drew it following a fan request.
2- This is the first Devil Fruit—specifically, the first Zoan-type—depicted in the series.
3- Luffy has far more named Devil Fruit attacks than any other Devil Fruit user.
4- In Romance Dawn, Version 2, the Hito Hito no Mi, Model: Nika was estimated by Luffy's grandfather to be worth 5.000.000.000.
5- This value is the same as the one estimated by Diez Barrels for the Ope Ope no Mi.
6- Both Gecko Moria and Charlotte Brûlée were able to imitate the usage of the Hito Hito no Mi, Model: Nika using their Devil Fruits, the Kage Kage no Mi and Mira Mira no Mi respectively. While Brûlée mirrored the techniques herself, Moria used Kage Kakumei to manipulate Oars' shadow to perform the attacks.
7- Other characters have imitated the naming pattern of the fruit's techniques :
Oars has used an attack called "Gomu Gomu no Shirimochi" during his fight against the Straw Hats.
In the anime, Bentham tried to fool Magellan by using Gomu Gomu no Okama Pistol, Okama Gatling, and Okama Giant Scythe, though he only copied the naming pattern and not the attacks themselves.
8- Gasparde and Charlotte Katakuri both mimicked the Hito Hito No Mi, Model: Nika's rubbery physiology via their Devil Fruits that allows them to turn their bodies into a substance that possesses elastic properties :
asparde's Ame Ame no Mi turns his body into candy syrup, that he can stretch forward, and create a slingshot effect with his arms similar to Luffy's "Gomu Gomu no Rocket".
Katakuri's Mochi Mochi no Mi turns his body into sticky mochi, which he can stretch forward very much like Luffy's. He can also expand his limbs to mimic the "Gomu Gomu no Elephant Gun".
9- According to the Gorosei, the World Government has been trying to acquire the Hito Hito no Mi, Model: Nika for almost 800 years.
10- Like all Zoan Devil Fruits, the Hito Hito no Mi, Model: Nika has a will of its own.
11- One of the fans asked Oda if Luffy's genitalia could stretch, and Oda answered that it could.
12- One of the fans asked Oda why he gave Luffy rubber powers, and Oda answered that it was because it was the funniest power, explaining that no matter how serious the story in the manga was, the reader would be able to relax and observe with interest what is happening.
(This question was answered by Oda twice, first in Shonen Jump, and then in SBS.)
13- According to the Gorosei : "Zoan Fruits contain a Will of their Own."
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1- Luffy's DF is Hito Hito no Mi, Model: Nika (ヒトヒトの実 モデル“ニカ” Hito Hito no Mi, Moderu: Nika, Viz: "Human-Human Fruit, Model: Nika"),
2- Commonly known as the Gomu Gomu no Mi, is a Mythical Zoan-type Devil Fruit
3- "Gomu" means "rubber" in Japanese.
4- In the Viz Manga, 4Kids and Funimation dubs, the Gomu Gomu no Mi has been called the Gum-Gum Fruit, "gum" being a soft, cohesive substance designed for chewing, with elastic properties.
5- Over 800 years ago, a certain person ate this Fruit, and committed acts making him known as "Joy Boy". For the next 800 years, the World Government then tried to get their hands on this Fruit, without success.
6- The ability of this fruit is to transform into Nika: a "liberating warrior" with a rubber-like body and the power to fight according to his whim, while making people smile.
7- In its awakened form, this fruit increases the strength and degree of freedom of the user's elastic body, granting it "the most extravagant powers in the world", according to one of the Five Elders.
8- Like all Devil Fruits, it is weak to Water, Sea Granite, and other standard Devil Fruit weaknesses.
9-
Trivia :
1- One Piece Magazine Vol.6 features an illustration of Roronoa Zoro having hypothetically been granted the Hito Hito no Mi, Model: Nika's powers. Eiichiro Oda drew it following a fan request.

2- This is the first Devil Fruit—specifically, the first Zoan-type—depicted in the series.
3- Luffy has far more named Devil Fruit attacks than any other Devil Fruit user.
4- In Romance Dawn, Version 2, the Hito Hito no Mi, Model: Nika was estimated by Luffy's grandfather to be worth 5.000.000.000.
5- This value is the same as the one estimated by Diez Barrels for the Ope Ope no Mi.
6- Both Gecko Moria and Charlotte Brûlée were able to imitate the usage of the Hito Hito no Mi, Model: Nika using their Devil Fruits, the Kage Kage no Mi and Mira Mira no Mi respectively. While Brûlée mirrored the techniques herself, Moria used Kage Kakumei to manipulate Oars' shadow to perform the attacks.
7- Other characters have imitated the naming pattern of the fruit's techniques :
Oars has used an attack called "Gomu Gomu no Shirimochi" during his fight against the Straw Hats.
In the anime, Bentham tried to fool Magellan by using Gomu Gomu no Okama Pistol, Okama Gatling, and Okama Giant Scythe, though he only copied the naming pattern and not the attacks themselves.
8- Gasparde and Charlotte Katakuri both mimicked the Hito Hito No Mi, Model: Nika's rubbery physiology via their Devil Fruits that allows them to turn their bodies into a substance that possesses elastic properties :
asparde's Ame Ame no Mi turns his body into candy syrup, that he can stretch forward, and create a slingshot effect with his arms similar to Luffy's "Gomu Gomu no Rocket".
Katakuri's Mochi Mochi no Mi turns his body into sticky mochi, which he can stretch forward very much like Luffy's. He can also expand his limbs to mimic the "Gomu Gomu no Elephant Gun".
9- According to the Gorosei, the World Government has been trying to acquire the Hito Hito no Mi, Model: Nika for almost 800 years.
10- Like all Zoan Devil Fruits, the Hito Hito no Mi, Model: Nika has a will of its own.
11- One of the fans asked Oda if Luffy's genitalia could stretch, and Oda answered that it could.
12- One of the fans asked Oda why he gave Luffy rubber powers, and Oda answered that it was because it was the funniest power, explaining that no matter how serious the story in the manga was, the reader would be able to relax and observe with interest what is happening.
(This question was answered by Oda twice, first in Shonen Jump, and then in SBS.)
13- According to the Gorosei : "Zoan Fruits contain a Will of their Own."
14-
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