One Piece Encyclopedia


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For "Smiley" Jolly Rogers affiliated with Donquixote Doflamingo, see Smileys.

Smiley, more commonly known as Slime (スライム Suraimu?), was a pet of Caesar Clown. It was created by gathering and compressing the poisonous H2S gas that spread throughout Punk Hazard and using Vegapunk's process of Zoan devil fruit animation to bring it to life.[4][5] It was kept in the Punk Hazard Burning Lands before being released.

Due its actions, it is a major antagonist of the Punk Hazard Arc.


Smiley, as its other name "Slime" suggests, was an enormous gelatinous red-violet mass that was compared to a mountain in size. Thanks to its Devil Fruit power it took on the shape of an axolotl with eyes, a mouth, legs, caudal fin and external gills. Smiley was able to subdivide into smaller slimes, however, the smaller slimes did not take on the shape of axolotls.


A Bird's View Of Smiley
A bird's eye view of Smiley's body.
Smiley Full Body
A full body view of Smiley.


Smiley did not seem to have any understanding of its actions, as it continuously moved forward after being released and even killed some of Caesar's men in the process. It did know, however, that it was weak to water and figured out a way to avoid it, by propelling little parts of itself over the body of water.[6] Smiley also responded to verbal commands from Caesar and followed them right away.[7] However, Smiley sometimes ignored Caesar if it was interested in something else.[8]

Abilities and PowersEdit

Smiley Exploding

Smiley exploding after being burned.

Smiley would constantly emit some kind of smoke or vapor, which would poison people that inhaled or touched it. It was also very corrosive, causing great pain on its own.[9] Despite its composition, it appeared to move rather fast, as some of Caesar's men could not escape from it, despite them being centaurs. Due to its large size, it is very hard to avoid or escape from it. Smiley also appeared to be immune to extreme heat, as it could freely move over the scorching ground in the Burning Lands without any trouble. It could also shoot pieces of itself called Smilies (スマイリーズ Sumairīzu?) in order to cross a lake or other body of water, as it was weak to water.[6] Even though it was immune to extreme heat, setting its body directly on fire would cause it to explode violently. Caesar once used this to his advantage by having the pieces latch onto his opponent and igniting them.

Devil FruitEdit

Smiley consumed the Sara Sara no Mi, Model: Axolotl, which allowed it to take on the form of an axolotl. It is also what gave Smiley life and sentience. However, given its unique composition, it is very likely that it could only assume a hybrid form and not a full-beast form.[10]



Four years ago, Smiley was created as a result of Caesar detonating his illegal chemical weapon of mass destruction experiment when Vegapunk attempted to dismiss him. One year later, when Caesar returned to the destroyed island, he condensed the H2S gas from the experiment into a slime form and "fed" it the Sara Sara no Mi, Model: Axolotl, thus creating Smiley. He then locked Smiley up for three years.[2]

Punk Hazard ArcEdit

Mysterious Slime

Zoro noticing Smiley in the distance.

After the Straw Hat Pirates and the G-5 Marines appeared on Punk Hazard and caused trouble for him, Caesar eventually lost interest in collecting bodies for his experiments and instead decided to release his pet, Smiley. Upon being released, Smiley immediately started to spread and move out, killing some of Caesar's men in the process. Later on, it was seen advancing further towards the Punk Hazard Ice Lands, where it was noticed by Zoro but mistaken for a mountain.[11]

Smiley vs. G-5 Marines

Smiley lands on the Marine's ship.

Upon reaching the lake that separates the ice and fire sides, Smiley started to shoot little pieces of itself over to the ice side to avoid crossing the water. Some parts of it landed on the ship that the G-5 Marines were on, merging together to form a bigger Smiley. After some Marines tried to attack the slime with swords and get poisoned in the progress, one of them tries to kill Smiley with a flamethrower. Smiley, while ignited, at first gives the Marines hope, only to detonate in an enormous explosion, destroying the ship and presumably killing the Marines in the process. After the explosion, small lumps of Smiley rained down on the battlefield, poisoning some of Caesar's men. Caesar then showed up and explained to the crowd that Smiley had been consciously shooting small lumps off itself over the lake.[12]

Later on, Smiley was still shooting lumps off itself to the ice land side. The pieces that fell into the lake were slowly contaminating the water, killing the fish that lived in the lake. During Caesar's fight with Luffy, Caesar ordered the Smiley pieces to cling to Luffy, in order to create a huge explosion. While the Smiley pieces managed to stick to Luffy, the explosion still missed him.[7]

Smiley Eats Candy

Smiley eating the candy laid out for it by Caesar.

Back near the lake, a large amount of Smiley's body had managed to surround Zoro, Brook, and Kin'emon despite the former two's efforts to hold it back. Finding themselves unable to attack the poisonous mass, Smiley almost overcame them before Kin'emon revealed his Fox Fire style swordsmanship, which ignited and detonated Smiley pieces in the immediate area, but contained the explosions.[13]

Smiley was then seen during Caesar's Den Den Mushi broadcast chasing after Zoro, Sanji, Brook and Kin'emon. Upon venturing further inland, the group came across a large piece of wrapped candy being pulled by Caesar's subordinates. Without hesitation, and completely ignoring Caesar's order to wait, Smiley devoured the candy whole in a single gulp.[8]

Smiley then "died" as he collapsed back into his original gas form, only this time, the gas was much deadlier because of the effects of the bait: instead of poisoning its victims, it petrified them. Smiley's Devil Fruit powers were released from their vessel and quickly reincarnated themselves inside the closest apple on Punk Hazard. A nearby apple was then seen transforming into a Devil Fruit, which was an indication of Smiley's "death".[14]

Major BattlesEdit


Video GamesEdit

Enemy AppearancesEdit

Non-Playable AppearancesEdit


  • Smiley's "death" is a reference to a pyroclastic flow, a fast moving current of gas and ash which is the result of a volcanic eruption.
  • Smiley is the first Zoan Devil Fruit user that can transform into an aquatic animal.


  1. One Piece Manga and Anime — Vol. 68 Chapter 668 and Episode 594, Caesar unleashes the Slime against the intruders.
  2. 2.0 2.1 One Piece Manga — Vol. 68 Chapter 669, Caesar explains that he created Smiley one year after the incident, which was four years ago. That would mathematically make Smiley 3 years old.
  3. One Piece 15th Anniversary: Dive to Grand World, Smiley's estimated size is revealed.
  4. One Piece Manga — Vol. 68 Chapter 669, Caesar explains how Slime was created.
  5. One Piece Manga and Anime — Vol. 68 Chapter 675 and Episode 601, Caesar further explain Smiley's creation.
  6. 6.0 6.1 One Piece Manga — Vol. 68 Chapter 670, Caesar states that the Slime dislikes water.
  7. 7.0 7.1 One Piece Manga — Vol. 68 Chapter 671, Caesar ordering Slime to wrap around Luffy.
  8. 8.0 8.1 One Piece Manga and Anime — Vol. 68 Chapter 675 and Episode 601, Smiley ignoring Caesar's order.
  9. One Piece Manga — Vol. 68 Chapter 670, A Marine suffers severe burns after touching the Slime.
  10. One Piece Manga — Vol. 68 Chapter 673, Smiley's Devil Fruit is revealed.
  11. One Piece Manga — Vol. 68 Chapter 669, Zoro spots Smiley but mistakes it for a mountain
  12. One Piece Manga — Vol. 68 Chapter 670, Smiley shoots lumps of slime of the lake
  13. One Piece Manga — Vol. 68 Chapter 672, Kin'emon cuts the slime
  14. One Piece Manga and Anime — Vol. 68 Chapter 676 and Episode 602, Smiley dies and the Devil Fruit "transfers" to a nearby apple

Site NavigationEdit

[v · e · ?]
Caesar Clown's Organization
Master: Caesar Clown
Affiliates: Donquixote Doflamingo   •  Kaido  •  Vergo   •  Trafalgar Law   •  Jack  •  Big Mom Pirates
Subordinates: Former Brownbeard Pirates   •  Centaur Patrol Unit (Smooge  •  Fen Bock  •  Chappe  •  Run)  •  Yeti Cool Brothers  •  Dragon  •  Monet   •  Smiley   •  Brownbeard 
Gigantification Research: Momonosuke  •  Mocha  •  Sind  •  Doran  •  Ally  •  Uzu  •  Konbu  •  Biyo  •  Ginko
Vehicles: Flying Gas Balloon
Devil Fruit Based: Gasu Gasu no Mi  •  Sara Sara no Mi, Model: Axolotl  •  Yuki Yuki no Mi  •  Ope Ope no Mi
Related Articles
Story Arc: Punk Hazard Arc
Locations: Punk Hazard  •  Dressrosa
Substances: NHC10  •  KYP  •  H2S  •  Shinokuni  •  SAD  •  Koro
Others: Brokers  •  Centaurs  •  Shichibukai  •  Vegapunk
[v · e · ?]
Devil Fruit Users
Canon: Monkey D. Luffy  •  Buggy  •  Alvida  •  Miss Valentine  •  Mr. 5  •  Nico Robin  •  Galdino  •  Wapol  •  Bentham  •  Daz Bones  •  Paula  •  Hina  •  Bellamy  •  Donquixote Doflamingo  •  Foxy  •  Blueno  •  Kalifa  •  Very Good  •  Shu  •  Sharinguru  •  Brook  •  Gekko Moriah  •  Perona  •  Absalom  •  Bartholomew Kuma  •  Jewelry Bonney  •  Eustass Kid  •  Trafalgar D. Water Law  •  Capone Bege  •  Basil Hawkins  •  Scratchmen Apoo  •  Urouge  •  Boa Hancock  •  Magellan  •  Emporio Ivankov  •  Inazuma  •  Edward Newgate   •  Jozu  •  Tsuru  •  Shiki  •  Blamenco  •  Marshall D. Teach  •  Vander Decken IX  •  Kin'emon  •  Baby 5  •  Buffalo  •  Trebol  •  Sugar  •  Issho  •  Bartolomeo  •  Leo  •  Viola  •  Jora  •  Kelly Funk  •  Gladius  •  Senor Pink  •  Machvise  •  Diamante  •  Pica  •  Kanjuro  •  Donquixote Rosinante   •  Mansherry  •  Charlotte Linlin  •  Charlotte Brûlée  •  Charlotte Perospero  •  Charlotte Cracker  •  Charlotte Galette  •  Charlotte Mont-d'Or  •  Charlotte Opera  •  Charlotte Smoothie  •  Charlotte Pudding  •  Tamago
Non-Canon: El Drago  •  Apis  •  Eric  •  Bear King  •  Noko  •  Blyue  •  Accino  •  Musshuru  •  Largo  •  Chameleone  •  Ain  •  Binz  •  Lily Enstomach  •  Breed  •  Byrnndi World  •  Gairam  •  Bürst  •  Bonbon  •  Bill  •  Tanaka  •  Aveyron  •  Mad Treasure  •  Psycho P  •  Gild Tesoro  •  Baccarat
Canon: Dalton  •  Tony Tony Chopper  •  Pell  •  Lassoo  •  Miss Merry Christmas  •  Chaka  •  Pierre  •  Rob Lucci  •  Funkfreed  •  Jabra  •  Kaku  •  X Drake  •  Onigumo  •  Boa Sandersonia  •  Boa Marigold  •  Minotaurus  •  Minozebra  •  Minokoala  •  Minorhinoceros  •  Dalmatian  •  Marco  •  Epoida  •  Sengoku  •  Pekoms  •  Minochihuahua  •  Smiley   •  Momonosuke  •  Kabu  •  Bian  •  Sheepshead  •  Jack
Non-Canon: Chiqicheetah  •  Buzz  •  Alpacacino  •  Pato  •  Patrick Redfield  •  All-Hunt Grount
Canon: Smoker  •  Portgas D. Ace   •  Crocodile  •  Enel  •  Kuzan  •  Marshall D. Teach  •  Borsalino  •  Sakazuki  •  Caribou  •  Caesar Clown  •  Monet   •  Sabo  •  Charlotte Katakuri
Non-Canon: Honey Queen  •  Gasparde  •  Simon
Undetermined Class
Non-Canon: Smash

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