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Fukaboshi is a shark merman and the first son of the royal Neptune family on Fishman Island. After he, his father and his brothers were liberated by the Straw Hat Pirates, he allied himself with them against Hody Jones and his crew.


Fukaboshi is an enormous, muscular shark merman, with a wide chest and large arms. He has a long face, framed by wavy fair blue hair flowing down to his shoulders, a sharp and pointy nose, and a dot of some sort printed on the middle of his forehead. He has gills on his massive neck (although they may just be stripes) and a dark blue tail with light blue polka-dots.

He wears a dark garment around his waist, held up by an extremely long sash. He also dons a light blue long band, which passes over his shoulders, drawing a circle around the back of his neck, and falls down to his waist, seemingly floating behind him; something all of the three brothers sport, as well as their mother and sister in a fashion, quite possibly implying it is a sign of the Royal Family, or they simply share taste in clothing. He carries around a gold trident with him.

In his youth, his appearance was virtually the same, except his facial features were less serious and sharp.


He has a great sense of responsibility, as he himself went to look for the crew who had entered the island illegally in case they were the Straw Hats instead of just sending his guards, to deliver Jinbe's message personally. He has a very serious demeanor, but is also polite, as he apologized for bothering the mermaids when he was about to leave the cove, and forgiving, letting the same mermaids go unpunished after discovering they were hiding the Straw Hat Pirates.

He also seems to be very reasonable and wise as seen how he handled the hostage situation in Ryugu Palace and not losing his temper. He did not show any animosity towards the Straw Hats and he respectfully conceded to Zoro's demands to reach a mutually beneficial solution. He is very loyal as he did not disregard his promise to Jinbe in delivering his messages to the Straw Hats even though the said pirates "took over" the Ryugu Palace.

He is also shown to be very thoughtful. Unlike the citizens who quickly jumped to conclusions, Fukaboshi suspected something was not right when Luffy was considered an enemy, having a feeling that the Straw Hats are not as bad as the situation made them out to be. When Luffy selflessly helped defend Ryugu Kingdom, Fukaboshi apologized to Luffy for ever doubting him.

Like his mother, Otohime, Fukaboshi strongly supports peace and cooperation with humans. When Hody attempts to spread his hatred and vengeance, Fukaboshi confronts him to keep his mother's ideals alive. He appears to be philosophical, stating that the regrets of the dead belong to the dead alone and that grudge is only an illusion created by the living. He also regrets that even he held subconscious spite towards humans, although he is one of the most accepting of all the fishmen seen thus far. Along with his father, he is remorseful about leaving the segregated Fishman District to fester and grow apart in the darkness of the seafloor, allowing the district's denizens to grow wilder and more hateful of humans. This segregation is acknowledged and modified thanks to Neptune, showing that Fukaboshi and his family are the rare type of royalty in the world, in that they are philanthropic and just, and heavily oppose a caste system which is mundane throughout the surface world.

He seems perceptive of at least Luffy's abilities, as he was not surprised when seeing Luffy used Haki on a sea monster. He is also the most serious of the three princes.




Neptune believes in his eldest son as he ordered the Minister of the Right to immediately contact Fukaboshi following the New Fishman Pirates' invasion. After Hody captured Neptune with the intent on taking his head, Fukaboshi became determined to save his father.


As a child, Fukaboshi was very close to his mother, Otohime. He deeply loves and respects his mother. He as well as the rest of his family were greatly worried when Otohime tried to negotiate with the World Nobles. He was overjoyed when Otohime finally succeeded in gaining the citizens' signatures. When Otohime asked her sons to become strong warriors in order to protect Shirahoshi, Fukaboshi enthusiastically accepts the promise. After Otohime was assassinated in broad daylight, Fukaboshi took it upon himself to continue his mother's work until her hopes and dreams are realized.


Fukaboshi, Ryuboshi, and Manboshi, all care for her well-being. As a child, he and his brothers would look after their then baby sister, Shirahoshi whenever their mother, Otohime, was away preaching to the people of Fishman Island. During the battle against the New Fishmen Pirates, he and his brothers do their best to protect her.



Jinbe is always welcome at Ryugu Palace and comes and goes as he pleases, and even royalty like Fukaboshi and Shirahoshi knows him well, and the former was willing to give his message to Luffy.

Straw Hat PiratesEdit

When the Straw Hats arrive at Fishman Island, Fukaboshi seeks them out to deliver a message from Jinbe. However, after Madam Shyarly stated her prediction about Luffy destroying Fishman Island, the prince developed some doubts towards the pirates. Even though the pirates "took over" Ryugu Palace out of self-defense, Fukaboshi did not show any animosity towards them and comes into an agreement with Zoro and kept his promise in delivering Jinbe's message. After being saved and freed by the Straw Hats, Fukaboshi apologizes to Luffy for doubting him and they quickly become allies. Luffy then begins to call Fukaboshi "Brotherhoshi" (兄ほし Anihoshi?).


Hody JonesEdit

Fukaboshi has great anger towards Hody Jones for his attempt to takeover the Ryugu Kingdom. When Hody threatens the king and the citizens of Fishman Island, Fukaboshi swore that he will stop him. When Fukaboshi confronted Hody, he angrily stated on how Hody and his crew were weaker than everyone on Fishman Island. While fighting him outside the island, Fukaboshi learns of Hody's true nature. After Otohime was shot, Fukaboshi swore revenge against the culprit, but after seeing how Shirahoshi honored their mother's last wish, Fukaboshi decided to do the same. After Hody was imprisoned and turned into an old man due to the side effects of the Energy Steroids, Fukaboshi tells Hody that he does not hate him for killing his mother but tells him to keep silent as Fukaboshi does not want the children to hear him.

Vander Decken IXEdit

Because of Decken pestering Shirahoshi with threatening marriage proposals, Fukaboshi and his brothers mobilized an army to track him down.

Abilities and PowersEdit

As a prince of the Ryugu Kingdom, he has a great deal of authority in the country. As the eldest of his siblings, he is the next in line for the throne.

From all indications, Fukaboshi seems to be an extremely strong individual. Hammond referred to him and his brothers as the three strongest in the Neptune Army, implying he has great physical strength and fighting prowess. The Minister of the Right also claimed that the Straw Hats would be in trouble if they were confronted by the princes. However, the minister was underestimating the Straw Hats' abilities. Furthermore, Neptune ordered the Minister of the Right to immediately contact Fukaboshi following the New Fishman Pirate's invasion, suggesting that Fukaboshi is capable of handling such stressful situations.

He also appears to be familiar with Haki, as he was not surprised when Luffy tamed one of the New Fishman Pirates' beasts, and commented that it was expected. However, it is unknown if he can use the ability as well.

The fact that he was able to defeat Dosun, a hammerhead shark fishman and officer of the New Fishman Pirates without having any injuries after his fight is testament that Fukaboshi is very strong. Further testament to his strength is when he and his two brothers alone took down the sea beasts that easily felled the rest of the Neptune Army including the two ministers. Fukaboshi and his brothers also had the upper hand against the officers of the New Fishman Pirates. The officers had to resort to using Energy Steroids in order to defeat the princes. Like his father, he is also able to use Merman Combat.

Fukaboshi With His Trident

Fukaboshi wielding his trident.

He also seems to possess great amounts of endurance, as he was able to help Luffy immediately after he was released despite his injuries caused in the battle against the New Fishman Pirates' Officers. Also, he took at least two direct hits by Hody's Kirisame and he was able to recover in a few seconds.


Further information: Merman Gujutsu

Fukaboshi carries around a trident, similar to the those used by the Ammo Knights, and has shown amazing skill in wielding it, being capable, with the aid of his brothers, of dispatching a group of enormous, drug-enhanced sea monsters with a single attack.

Merman CombatEdit

Further information: Merman Combat

Fukaboshi can also manipulate water using Merman Combat and can use Ultramarine.




Ryugu Royal Family

Fukaboshi and his siblings after their mother returned home from preaching.

As a child, Fukaboshi was very close to his mother, Otohime. He was also very protective of his then baby sister, Shirahoshi as he and his brothers would look after her while their mother was away preaching.[2]

When Shirahoshi was six-years-old, a World Noble arrived on the island in a wrecked ship. Otohime quickly ran off to where the ship was docked. The four children of the royal family soon followed her.When they arrived at the scene, Shirahoshi asked Fukaboshi of what a World Noble was. Fukaboshi answered World Nobles are humans, except they are the ones to be feared.

When Otohime was threatened by the noble she was protecting, Shirahoshi cried and unknowingly summoned some Sea Kings. The World Noble passed out from a big shock and Fukaboshi and his brothers tried to calm Shirahoshi.Fukaboshi and his siblings seemed worried when Otohime decided to accompany the noble to the surface. For one week, they anxiously waited in the castle for her return. After Otohime returned safe and sound, she finally reached out to the citizens and collect their signatures. Fukaboshi, his siblings, and Neptune were overjoyed by Otohime's success.

Otohime later explained to Fukaboshi and his brothers about Shirahoshi's ability to call Sea Kings which is connected to a legend. She went on saying that Shirahoshi's ability could be dangerous since she could not control it yet. Otohime then asked the three brothers to become strong warriors and protect Shirahoshi.

Otohime's AssassinationEdit

Fukaboshi's Promise

Fukaboshi renews his and his brothers' promise to their mother.

One day in Gyoncorde Plaza, the box containing all of the signatures suddenly caught fire. In the confusion, Otohime was murdered by Hody Jones. Fukaboshi and his brothers immediately came to their mother's side. The three brothers tearfully listened to their mother's last words, telling them not to be angry for her sake and to look after Shirahoshi. After Ryuboshi and Manboshi prevented Shirahoshi from summoning Sea Kings by singing and dancing, Fukaboshi swore that they will keep their promise of protecting her. As their mother passed away, Fukaboshi and his siblings touched pinky fingers with her for the last time.

Prince's Plea

Fukaboshi pleas with his people to have faith in his mother's legacy.

Before Otohime's funeral, the four children of the royal family told their father, Neptune, about the love letters that kept flying to Shirahoshi. Neptune told Fukaboshi and his siblings to not to go out to the funeral since danger still lurked around. During Otohime's funeral, Fukaboshi gave a speech through a visual broadcast, explaining that he will carry on Otohime's will.

Fishman Island ArcEdit

Meeting the Straw HatsEdit

He first appears in Mermaid Cove with his brothers Ryuboshi and Manboshi, and appears to be looking for Luffy and his crew because of their illegal entry. The mermaids deny seeing any intruders.As Fukaboshi and his brothers are leaving, Sanji suffers a massive nosebleed resulting in critical blood loss. Luffy, Usopp, and Chopper then reveal themselves to Fukaboshi, begging anyone for a blood donation to save Sanji's life. Hammond and his group appear and attempt to capture the four Straw Hat Pirates. Fukaboshi witnesses Luffy's strength as the Straw Hat captain punches the New Fishman Pirates and stops their sea monster with Haki.

He remains in Mermaid Cove after Keimi stole the gondola he was riding on to help Sanji, Luffy, Usopp, and Chopper escape. After the Straw Hat Pirates left, Fukaboshi questions the mermaids on why they were hiding the Straw Hat Pirates and reveals that he was about to give them a message from Jinbe. He then speaks with Madam Shyarly in Coral Hill, who reveals an ominous prediction to him concerning Straw Hat Luffy. After hearing the disappearance of some mermaids from the Mermaid Cove as well as Shyarly's prediction, Fukaboshi takes caution of Luffy. He then sends a message concerning the Straw Hats to his father, King Neptune.

Fukaboshi and his brothers then return to the palace on their royal gondola only to find that it has been taken over by the Straw Hat pirates after they subdued Neptune and the palace guards. Fukaboshi then speaks with Zoro through a Den Den Mushi hooked up to an intercom outside the palace bubble. Since the only way into the palace is the connection corridor (which is closed off), Fukaboshi willingly listens to Zoro's demands of allowing the Straw Hat crew to leave Fishman Island peacefully. Fukaboshi then reveals Jinbe's message.

The New Fishman Pirates' Coup d'ÉtatEdit

Fukaboshi Hits Dosun

Fukaboshi strikes Dosun for forcing the citizens to step on his mother's fumi-e.

While Fukaboshi is complying with Zoro's demands, he finds Dosun causing chaos at Water Wheel Village in the north side of Fishman Island. Once Fukaboshi sees that Dosun is forcing the citizens to step on the fumi-e of Queen Otohime, the prince strikes him out of anger and later defeats him.

Fukaboshi and his brothers then watch Hody's speech through a visual broadcast. After Hody explains his plan of recreating the Ryugu Kingdom with himself as the ruler, Fukaboshi swears that he will stop Hody.

Merman Gujutsu Infobox

The brothers take down the sea beasts.

After Hody finishes his speech, Fukaboshi and his brothers ride on their gondola and head for Gyoncorde Plaza to save their father, who is scheduled to be executed by Hody himself. Even though it might be a trap, Fukaboshi still resolves to stop Hody. Fukaboshi and Manboshi talk about how they are not letting Hody ruin all their work to join Reverie. They also talk about the Straw Hat Pirates. Fukaboshi is bothered by Madam Shyarly's prediction, but he did not feel any ill-intent from the Straw Hats directly. Manboshi comments on how he feels the same way since the mermaids from the cove who already met the Straw Hats personally did not speak ill of them at all and that mermaids are usually good at telling how truthful someone is.

Fukaboshi and his brothers arrive at Gyoncorde Plaza and express their dismay upon seeing the soldiers defeated. They then take out all of the sea monsters that attack them without any difficulty. While attacking the animals, he tells Hody that he and his crew are the weakest on the island, and that the people have looked beyond the history of oppression and discrimination by humans. Fukaboshi and his brothers then attack Hody and the rest of the officers.

Gyoncorde Plaza Execution

Fukaboshi with his father and brothers, all chained up and on display for execution.

Initially, the princes had the upper hand, but the officers turn the odds against them by taking Energy Steroids. The princes are then defeated and captured. Fukaboshi apologizes to his father, but Neptune assures him that the New Fishman Pirates' strengths are lies. He then watches the arrival of a captured Shirahoshi, Megalo, and Jinbe. When Hody Jones declares that he was the one who truly killed Queen Otohime, Fukaboshi was stunned by this revelation. Shirahoshi says that she already knew and explains that she did not tell anyone because she was honoring her mother's last wish. Fukaboshi is shocked that Shirahoshi upheld her promise for so long. As Hody mocks Shirahoshi for allowing him to go free, he attacks Fukaboshi, his brothers, and Neptune with Yabu Same. Fukaboshi, along with his father and brothers are rescued by Hoe during the Straw Hats' unexpected arrival.

Saving Fishman IslandEdit

He is later seen with Hoe and his father, recovering somewhere away from the battle. When they see Noah, Fukaboshi does not understand why Neptune is making such a big deal about the ship being there. At some point when his sister, Shirahoshi, is leading Noah away from Fishman Island into the ocean, he is seen saving Luffy (while inside a bubble) from Hody while they are both in the sea. Fukaboshi apologizes to Luffy for doubting him and also tells Luffy about the promise the brothers made to their mother of protecting Shirahoshi.

On their way to the ship, Hody attacks them with his blade. Fortunately, Hody misses them. As they are going to the deck of the ship, Hody goes ahead of them. After Hody deals a grievous blow to Decken, he attempts to kill Shirahoshi. Fukaboshi and Luffy arrive just in time to stop him.

When Noah is sinking towards Fishman Island after Decken loses conscious, Luffy tells Fukaboshi that he is going to destroy the ship. Fukaboshi replies that the ship is too important to destroy and that they should move it instead. When Hody later destroys the air coating around the ship, Fukaboshi gets angry and uses "Ultramarine" on him, which Hody evades. Fukaboshi swims after him and tries to punch Hody from close range, but Hody once again evades and counterattacks with his Kirisame. Fukaboshi then pulls Hody towards him asking him what he is and what humans ever did to him to make him become this obsessed with killing them. Hody answers with a single word, "nothing". Hody proceeds to say that he and his crew were chosen by the heavens to pass down judgement on the humans and then attacks Fukaboshi again with his Kirisame. After taking Hody's onslaught, Fukaboshi tells Luffy and Fishman Island that he knows what Hody's true character is.

Fukaboshi Asks Luffy to End the Hatred

Fukaboshi tearfully asking Luffy to end the hatred.

Fukaboshi says that Hody is a monster born from circumstance and the New Fishman Pirates are a group that thrives on hatred and resentment. Fukaboshi goes on to say that the New Fishman Pirates' hatred lacks personal experience and will and that they are just empty beings with no substance what so ever. Fukaboshi then come to a realization on how apathetic Fishman Island has been towards the fishmen living in the Fishman District. While only focusing on making progress for peace, they ignored the hatred of the New Fishman Pirates and allowed their hatred to grow unchecked until it started destroying Fishman Island. Fukaboshi then tearfully asks Luffy to help end the hatred and bring Fishman Island back to zero.

After Hody is defeated, Luffy tries to destroy Noah. Fukaboshi then laments on how destroying Noah is the only way to save Fishman Island. However, the Sea Kings appear and stop Noah from falling any further, saving the ship and the island at the same time.

The Beginning of PeaceEdit

Fukaboshi Thanks Luffy

Fukaboshi expressing his gratitude to Luffy.

After the Sea Kings take Noah to the Sea Forest, Fukaboshi and his brothers take the unconscious Hody and Decken to the plaza and put them in chains. After reuniting with Neptune, Fukaboshi declares to the citizens that the two criminals will never be free again. While the officers and Vander Decken IX are imprisoned, the royal family and the Straw Hats have a feast at Ryugu Palace as a celebration. During the feast, he is seen losing to Nami in a drinking contest.

When the full effects of the Energy Steroids take hold of the New Fishman Pirates, turning them all to grizzled old men, Fukaboshi tells a furious Hody that he does not hate him for his crimes and implores him to be quiet for the sake of the children. Afterwards, Fukaboshi with his family and citizens of Fishman Island bid farewell to the Straw Hats while Fukaboshi tells Luffy he has his gratitude and prays for his safety on his voyage. Fukaboshi, along with his brothers tell their father they will not forget this debt they owe the Straw Hats.

Totland ArcEdit

As the time for Reverie approached, Fukaboshi convinced Shirahoshi to accompany her father and brothers to the surface.[3]

From the Decks of the World: The 500,000,000 Man ArcEdit

Before leaving Fishman Island, Fukaboshi and Shirahoshi passed by some children who were wearing "hero hats".[4]

Major BattlesEdit


Video GamesEdit

Playable AppearancesEdit


  • Fuka (鱶) is another word for shark, so his whole name means "shark star".
  • Fukaboshi may be modeled after Triton, son of Poseidon, the god of the sea in Greek and Roman mythology, whom Fukaboshi's father is modeled after. This has not yet been confirmed by Oda.
  • Fukaboshi's face design is based on Tsujimura figures, which are based on the Kabuki concept of stylistic beauty.[5]


  1. One Piece Blue Deep: Characters World (p. 146), His birthday is revealed.
  2. One Piece Manga and Anime — Vol. 63 Chapter 624 (p. 6) and Episode 544, Fukaboshi looked after Shirahoshi.
  3. One Piece Manga — Vol. 82 Chapter 823.
  4. One Piece MangaChapter 828.
  5. One Piece Color Walk 6.

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Fishman Island
Fishmen: Arlong  •  Hatchan  •  Chew  •  Kuroobi  •  Pisaro  •  Kaneshiro  •  Take  •  Shioyaki  •  Octopako  •  Jinbe  •  Hammond  •  Kasagoba  •  Hody Jones  •  Fisher Tiger  •  Ammo Knights  •  Dosun  •  Zeo  •  Daruma  •  Ikaros Much  •  Harisenbon  •  Junan  •  Papaneel  •  Togare  •  Gotan  •  Nuru  •  Tom  •  Hack
Merfolk: Keimi  •  Hyouzou  •  Medaka Mermaid Quintuplets  •  Ishilly  •  Kairen  •  Hiramera  •  Seira  •  Mero  •  Lulis  •  Adele  •  Fillonce  •  Sora  •  Fukaboshi  •  Ryuboshi  •  Manboshi  •  Shyarly  •  Neptune  •  Minister of the Right  •  Minister of the Left  •  Shirahoshi  •  Den  •  Aladdin  •  Otohime  •  Maria Napole  •  Luca  •  Meverly  •  Garcia
Animals: Pappug  •  Hoe  •  Megalo  •  Surume  •  Daidalos
Fighting Style Based: Fishman Karate (Fishman Jujutsu)  •  Merman Combat  •  Merman Gujutsu  •  Rokutoryu  •  Hattoryu
Weapon Based: Kiribachi  •  Kirisame
Others: Haki  •  Energy Steroid  •  Bubbly Coral
Related Articles
Story Arc(s): Fishman Island Arc  •  Totto Land Arc
Locations: Ryugu Kingdom  •  Ryugu Palace  •  Mermaid Cove  •  Coral Hill (Mermaid Cafe)  •  Gyoverly Hills  •  Sea Forest  •  Criminal Brand Company  •  Fishman District  •  Fishman Karate Dojo  •  Candy Factory  •  Gyoncorde Plaza  •  John's Candies Shop
Ship(s): Noah  •  Ryugu
Organizations: Shichibukai  •  Sun Pirates  •  Arlong Pirates  •  Macro Pirates  •  New Fishman Pirates  •  Flying Pirates  •  Big Mom Pirates  •  Whitebeard Pirates
Others: Slavery  •  Edward Newgate  •  Charlotte Linlin  •  Tamatebako  •  Mermaid Princess (Poseidon)
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Titles: King  •  Queen  •  Princess  •  Prince
Royal families: Nefeltari Family  •  Gorgon Sisters  •  Riku Family  •  Donquixote Family   •  Kozuki Family  •  Vinsmoke Family
Nobles (canon)
Alabasta: Nefeltari Cobra  •  Titi   •  Nefeltari Vivi
Amazon Lily: Boa Hancock  •  Boa Sandersonia  •  Boa Marigold  •  Gloriosa 
Black Drum Kingdom: Wapol  •  Miss Universe
Goa Kingdom: Stelly  •  Sarie Nantokanette
Ryugu Kingdom: Neptune  •  Otohime   •  Fukaboshi  •  Ryuboshi  •  Manboshi  •  Shirahoshi  •  Poseidon 
Dressrosa: Donquixote Doflamingo   •  Riku Dold III  •  Scarlett   •  Viola  •  Rebecca   •  Kyros *
Tontatta Kingdom: Gancho  •  Mansherry
Mokomo Dukedom: Inuarashi  •  Nekomamushi
Germa Kingdom: Vinsmoke Judge  •  Vinsmoke Reiju  •  Vinsmoke Ichiji  •  Vinsmoke Niji  •  Sanji   •  Vinsmoke Yonji
Others: Thalassa Lucas  •  Dalton  •  Goldfish Princess  •  Bellett  •  Emporio Ivankov  •  Elizabello II  •  Charlotte Linlin
Nobles (non-canon)
Crown Island: Kirin Lion   •  Mobambi
Mecha Island: Ratchet  •  Roba
Others: Musshuru  •  Caroline

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