One Piece Wiki

The Ishi Ishi no Mi is a Paramecia-type Devil Fruit that allows the user to merge with and manipulate stone, making the user a Stone Assimilation Human (岩石同化人間 Ganseki Dōka Ningen?, Viz: Stone-Assimilation Man). It was eaten by Pica.[2]

This fruit is not to be confused with a Logia-class power, as the user cannot transform their body parts into stone nor generate it from their own body.[3]


  • Ishi (?) means "stone" in Japanese.
  • In the FUNimation adaptations, it is called the Stone-Stone Fruit.

Strengths and Weaknesses


The Devil Fruit's primary ability is the power to merge and assimilate with any form of stone. This allows the user to take control of anything made of stone that they come in contact with. While under the user's control, the stone gains a surprising level of flexibility and dexterity that it otherwise would not have, as seen by Pica's ability to stretch and reshape it in a surprising number of ways. In Pica's case, he can control the Dressrosa castle as if it were an extension of his own body, as it is entirely stone-made.[2] It appears that the strength of this particular fruit is directly proportional to the amount of stone in the user's environment. Because of this, at sufficient amounts, the user can withstand having pieces of their "body" destroyed to no end.[4]


One weakness of the fruit is that the user needs to be merged with the stone in order to control it, as shown when the stone giant's body stopped moving when Pica's real body emerged from it.[5] Because this power is not Logia, the user's body does not transform into stone, but instead resides within it, and that portion is as vulnerable as any normal person. Indeed, Pica had to shift his conscious human part away to avoid Zoro's slash.[6] Inversely, because this power is not Logia, damage done to the stone the user controls is not inflicted upon the user themselves, so long as their body is not harmed. Also, if the user assimilates with stone and then loses contact with the ground (such as being sent into midair), the main body is unable to assimilate any stone from nearby environment. In that case, if the airborne stone containing the body is further sliced into small pieces, the user has no choice but to emerge with his own body.[7] Additionally, outside of its improved flexibility, the stone under the user's control is no stronger or harder than normal stone. Thus, a strong enough opponent or weapon can easily destroy it. The user is also vulnerable against the standard Devil Fruit weaknesses.


Pica controlling the palace.

Pica can use this ability to merge with any construct made of stone, hiding himself and taking complete control of the area as if it was an extension of his own body. He has complete control of Doflamingo's entire palace, since it is made entirely of stone, causing the hallways to close together and shifting the walls.[2] Because he can assimilate with the stone of the castle, he can constantly allow his body parts to be destroyed with no harm to himself, and simply regenerate by assimilating with more stone in mere seconds.[4] It also allows him to travel through the stone quickly, moving from one location to another in short amounts of time.[8] Pica can use the assimilated stone to extend his arms' reach, allowing him to wield his gigantic katana at long range.[6]

Pica becomes a giant to wipe out the Donquixote Family's enemies.

Once Sugar fainted and the entire Dressrosa rebelled, Pica used his ability to take control of the entire island's layout, as the kingdom is on top of a rocky terrain, which allows him to transform the landscape such as moving the entire palace, shifting the elevation of the SMILE Factory and increasing the range of the Flower Hill at the cost of other regions.[9] He can even merge with the stone of the entire island to gain a body of tremendous size, on par with special giants like Oars or even Sanjuan Wolf.[10]


  • Pulpostone (蛸石プルポストン Puruposuton?, literally meaning "Octopus Stone"): After assimilating with a large mass of stone, Pica produces tentacles out of the stone and directs them towards the target in an attempt to crush them. This was first used against Zoro, but was avoided.[6] Pulpo is the Spanish word for "octopus".

Pica attacks Zoro with Charlestone.

  • Charlestone (舞踏石チャールストン Chārusuton?, literally meaning "Dancing Stone"): After assimilating a vast stone area, Pica makes a multitude of giant stone spikes erupt from it. This was first used against Zoro, but was avoided.[11] Considering the kanji, the name is a pun on the Charleston dance.
  • Ishiusu (石押イシウス Ishiusu?, literally meaning "Stone Press"): Pica creates two horizontal pillars of stone with spikes on the end that he slams together around an opponent, crushing and stabbing them. This was first used against Baby 5, but ended up hitting Sai instead.[12] This is called Stone Mill in the Viz Manga and Steel Mill in the FUNimation adaptations.
  • Bitestone (噛石バイトストン Baitosuton?, literally meaning "Biting Stone"): Pica creates a replica of his head out of stone and uses it to bite an opponent. This was first used against Zoro, who cut the replica in half before it could attack him.[13]


  • This is the first kind of Paramecia that allows the user to merge with a substance/element, but not the first to be similar to a Logia.
  • Pica's ability to indefinitely regenerate his stone body as long as he is in contact with the stony ground of Dressrosa makes him similar to the giant Antaeus in Greek mythology. Likewise, Zoro defeated Pica the same way Heracles defeated Antaeus: lifting him off of the ground.

External Links

  • Rock – Wikipedia article on rocks.
  • Golem – Wikipedia article on golems.


  1. One Piece Manga and Anime — Vol. 74 Chapter 736 (p. 18-19) and Episode 669, Pica emerges from the stone wall of the Dressrosa palace.
  2. 2.0 2.1 2.2 2.3 One Piece Manga and Anime — Vol. 74 Chapter 737 (p. 2-3) and Episode 669, Pica is classified as a Stone Assimilation Human.
  3. One Piece Manga and Anime — Vol. 75 Chapter 749 (p. 12-15) and Episode 685, Pica's real body confronts Luffy and Zoro.
  4. 4.0 4.1 One Piece Manga and Anime — Vol. 74 Chapter 740 (p. 3) and Episode 673, Zoro cuts down pieces of Pica with no end.
  5. One Piece Manga and Anime — Vol. 75 Chapter 749 (p. 15) and Episodes 685686.
  6. 6.0 6.1 6.2 One Piece Manga and Anime — Vol. 76 Chapter 754 (p. 12-14) and Episode 692, Pica swiftly shifts his true body away to avoid Zoro's attack.
  7. One Piece Manga and Anime — Vol. 78 Chapter 778 (p. 10-17) and Episode 719, Pica is forced to emerge in midair when Zoro corners him by slicing through his stone.
  8. One Piece Manga and Anime — Vol. 75 Chapters 743744 and Episodes 677679, Pica left the battle with Zoro and made it back to the Hall of Suits.
  9. One Piece Manga and Anime — Vol. 75 Chapter 745 (p. 16-19) and Episode 680, Pica reconfigures the entire Dressrosa.
  10. One Piece Manga and Anime — Vol. 75 Chapter 747 (p. 16-17) and Episode 683, Pica emerges after fusing with the stone of Dressrosa island.
  11. One Piece Manga and Anime — Vol. 77 Chapter 770 (p. 8-9) and Episode 708, Pica using Charlestone on Zoro.
  12. One Piece Manga and Anime — Vol. 78 Chapter 777 (p. 12-13) and Episode 718, Pica using Ishiusu on Baby 5 and Sai.
  13. One Piece Manga and Anime — Vol. 78 Chapter 777 (p. 14) and Episode 718, Pica using Bitestone against Zoro.

Site Navigation