One Piece Encyclopedia

Hack (Fishman)

4,672pages on
this wiki
Add New Page
Talk12 Share
"Hack" redirects here. For the human, see Hack (Human).

"Hundredth Dan" Hack is a Japanese soldierfish fishman[7] and member of the Revolutionary Army.[4] He went to Dressrosa to investigate the arms trafficking there[4] and competed at the Corrida Colosseum for the Mera Mera no Mi[1].


Hack is a fishman with yellow skin that has brown spots on the upper part of his head, along with scales under his eyelids, sharp teeth, and gills on the sides of his neck. The fishman has a muscular stature, with long light blue flowing hair and a thick blue mustache.

Similar to Kuroobi, he wears an open gi with a black belt.

When he was transformed into a toy, he appeared to be shaped like a dog.


Hack Full Body
A full body view of Hack.
Hack at Age 36
Hack after the Whitebeard War.
Hack as a Toy
Hack's appearance as a toy.


Hack is a calm and proud person, and follows a dream where a path of friendship may be formed by fighting. For that reason, he will continue fighting.[9] He finds fighting battles to be honorable and thus, dislikes those who show a lack of respect toward a fight such as Bartolomeo. He is very honorable and dislikes attacking an opponent from the back, but he will do it if said opponent is not worthy of his respect, as he did to Bartolomeo, who was urinating on the side of the fighting ring and was, in Hack's opinion, not taking the battle seriously.[10]



He is a dear friend of Jinbe, and also shares the same dream - to have a friendship between humans and fishmen. However, the way differs between the two, as Hack stated that he wants it "by fists".[9]

Nico RobinEdit

Hack seems to have developed a friendly relationship with Nico Robin, who was rescued by the revolutionaries just prior to the timeskip. She greeted him warmly soon after meeting again in Dressrosa.

Revolutionary ArmyEdit


He seems to be working closely with Koala. He intended to get into contact with her after losing the Corrida Colosseum tournament but was unable to after he was turned into a toy by Sugar and forced to work.[3] In SBS Volume 80, it is revealed by Oda that Hack was the one responsible for bringing Koala into the Revolutionary Army when she was 14. She studied Fishman Karate under his tutelage, eventually becoming a Master Assistant Fishman Karate Instructor.


Hack also works closely with Sabo in the Revolutionary Army. However, he along with Koala, are occasionally at odds with him over his tendency to leave his post during missions.[11] In SBS Volume 80, it is revealed by Oda that the amnesiac Sabo studied briefly martial arts under Hack, but since Sabo was already a talented fighter due to his training alongside Luffy and Ace, their was little that Hack could teach Sabo, so Dragon took Sabo under his wing.

Abilities and PowersEdit

As a fishman, he is at least ten times stronger than an average human, and twice that in the water. However, as he is taking part in the Corrida Colosseum fights, a location in the New World, as well as from the demonstration of a high-level Fishman Karate attack, it is implied that Hack's much stronger than that.

He was able to stop an assault from a large gladiator by grabbing his opponent's spiked club, with the man commenting that he was unable to move his weapon in Hack's grip.[9]

Fishman KarateEdit

Main article: Fishman Karate

Hack is an instructor in Fishman Karate,[5] in comparison to Koala's status as assistant instructor.[12] He uses Fishman Karate to attack his opponents with great strength.[9][10]

Fishman JujutsuEdit

Main article: Fishman Jujutsu

Hack is a Fishman Jujutsu martial artist,[5] although he has not been seen using any techniques.



At an unknown time in the past, he became friends with Jinbe of the Royal Shichibukai .[9] He also became a member of the Revolutionary Army where he trained many orphans over the years, including Sabo. By the time Sabo was 13, who was so strong even for his age, Hack had nothing left to teach him. A year later, Hack and Sabo became acquainted with Koala. Over the years, the trio were sent on the same missions together.[13]

After the Whitebeard War, Sabo had a mental breakdown after recovering his lost memories. When Sabo awoke from his three-day coma, Hack expressed his concerns.[14]

Dressrosa ArcEdit

Hack, Sabo, and Koala arrived at Dressrosa in order to put a stop to a weapons trade that the Donquixote Family managed.[4]

Hack entered the Corrida Colosseum to compete for the Mera Mera no Mi. For the battle royale, he was placed in Block B.[1]

After Block B's battle royale had started, one of the fighters taunted Hack for being a fishman, asking why a "freak" like him had entered a human tournament. Eyes closed, the fishman mused over how pitiful the man's statements were, remarking that they are nothing but the words of a puppet, and that if he wants to talk, he should at least do it with his fists. Enraged, Hack's opponent rushes forward and attacks him with a giant spiked club, which the fishman catches with one hand. As the man wonders why he can't move, Hack defeats him with Fishman Karate, sending him flying away. Hack then announces his desire to continue pursuing his dream of forming friendships through fighting, in the same spirit as his friend Jinbe.[9]

Bartolomeo Power

Hack attacks Bartolomeo's back before being defeated.

As he continued to defeat opponent after opponent with his Fishman Karate, Hack gained popularity from both the crowd and Gatz, who heartily cheered him on. When Bartolomeo began to pee over the side of the arena in front of the entire audience, Hack approached him, angrily commenting how there are people who were trying to fight seriously, and that he had no choice but to attack the Super Rookie from behind. As the crowd cheered him on, Hack unleashed his attack, only for it to be blocked by Bartolomeo's Bari Bari no Mi ability, which crushed the fishman's hand, severely injuring him. As the spectators and Gatz gape in confusion over what had just happened, Hack writhed in pain on the arena's floor, with the ferocious Bartolomeo leering over him.[10] Continuing what he had started, the vicious Super Rookie then finished Hack off with a brutal kick to the face.[15]

Sometime later, he was supposed to receive treatment for his injuries but instead, he was thrown in an underground dungeon filled with broken toys along with some of the disqualified participants. Hack commented that it was safe to assume that they won't be receiving medical treatment at all.[16]

After Ricky was revealed to be the former king of Dressrosa, Riku Dold III, Hack was seen secretly speaking with Koala by means of a Den Den Mushi.[17][3]

Hack was later seen in the underground trade port, having been transformed into a toy dog and forced to work. While moving crates, he complained bitterly that Koala was waiting for his report.[3]

When Sugar lost consciousness, Hack transformed back into his original form. He was then informed by Koala that Sabo was making his way to the basement.[18]

Revolutionaries in Dressrosa

Hack with Sabo and Koala

After Sabo and Koala arrived at the underground trade port through the surface, Hack was seen standing alongside them.[4]

After reacquainting with Robin, they later watched in shock as Doflamingo initiated his "bird cage" plan and created a "game" which gives the citizens of Dressrosa a choice to either kill him or a list of people he offers to them.[19]

Doflamingo announced his hit list, which includes Sabo, Robin, Rebecca, and Usopp. With Usopp's new followers turned against them, Hack, Koala, Sabo, Robin, Rebecca, Usopp, Bartolomeo, and the Tontatta dwarves fled from the mob.[20]

They (except for Sabo and Koala) later reached the colosseum stands. While Bartolomeo used his barrier against their pursuers, Hack noted that Sabo went off somewhere.[21]

They eventually arrived at the top of the old King's Plateau where they met up with Riku Dold III, Viola, and Tank Lepanto.[22] Hack remained with King Riku, Viola, and Usopp while Rebecca, Bartolomeo, Leo, Kabu, and Rebecca headed for the new King's plateau to find Luffy and the rest of the dwarves headed for the SMILE factory.[23]

The group on the old King's plateau were later joined by Kin'emon and Kanjuro.[24]

When the Dressrosa citizens reached the top of the plateau with the intent to capture King Riku and Usopp, Hack held them back long enough for Usopp to snipe at Sugar.[25]

The citizens who were originally after Doflamingo's targets then had a change of heart, realizing that they were playing in Doflamingo's hands.[26] Sometime after the defeat of most of the Donquixote Pirates' officers, Pica arrived at the Old King's Plateau in his giant Pica statue, intending to crush everyone on the plateau. Fortunately, Pica was defeated by Zoro and the rubble from the statue was destroyed by Elizabello's King Punch.[27] While Dold, Tank, and the citizens were leaving the plateau, Hack stayed with the others and heard about Law's defeat from Viola.[28]

After the Birdcage started shrinking, Hack was seen climbing down the Old King's Plateau carrying Usopp on his back.[29]

They eventually reached the base of the plateau while Viola informed her father via Den Den Mushi that Doflamingo was the only enemy left.

He continued carrying Usopp on his back as Luffy engaged Doflamingo in a final battle while many others worked together to slow the Birdcage down. Once Luffy finally defeated Doflamingo and brought down the Birdcage, everyone on Dressrosa rejoiced as Luffy's victory was announced.[30]

Hack was later seen at the underground trade port, waiting for Sabo along with Koala and some other revolutionaries.[31]

He then contacted Sabo, who told him that he was heading for the harbor, but abruptly hung up before Hack could say anything else. This caused Hack to become frustrated and take out his anger on the Den Den Mushi operator.[14]

The revolutionaries later left Dressrosa and they apparently took all the weapons and evidence relating to the Donquixote Family's smuggling operation before CP-0 could recover them.[32]

The following events are Non-Canon and therefore not considered part of the Canon story.

Silver Mine ArcEdit

Hack and his fellow revolutionaries were seen on a ship stationed far away from Gran Tesoro.[33]

Concludes non-canon section.

Major BattlesEdit

Filler BattlesEdit

  • Hack vs. Usopp's former followers
  • Hack, Riku Dold III, and Tank Lepanto vs. pirates


Video GamesEdit

Support AppearancesEdit


  1. 1.0 1.1 1.2 One Piece Manga and Anime — Vol. 71 Chapter 706 and Episode 636.
  2. One Piece AnimeEpisode 633, Hack makes an early appearance in silhouette after Lucy defeats Spartan.
  3. 3.0 3.1 3.2 3.3 One Piece Manga and Anime — Vol. 74 Chapter 737 (p. 16) and Episode 669, Hack reveals that he has ties with Koala of the Revolutionary Army.
  4. 4.0 4.1 4.2 4.3 4.4 One Piece Manga — Vol. 75 Chapter 744.
  5. 5.0 5.1 5.2 5.3 One Piece Manga and Anime — Vol. 71 Chapter 707 and Episode 636.
  6. One Piece Manga — Vol. 71 Chapter 707.
  7. 7.0 7.1 7.2 SBS One Piece MangaVol. 77.
  8. SBS One Piece MangaVol. 79, Hack's birthday is shown in a calendar.
  9. 9.0 9.1 9.2 9.3 9.4 9.5 9.6 One Piece Manga and Anime — Vol. 71 Chapter 707 and Episode 637.
  10. 10.0 10.1 10.2 10.3 10.4 One Piece Manga and Anime — Vol. 71 Chapter 708 and Episode 637.
  11. One Piece Manga — Vol. 76 Chapter 760.
  12. One Piece Manga and Anime — Vol. 73 Chapter 731 (p. 18) and Episode 663, Koala's infobox.
  13. SBS One Piece MangaVol. 80, Hack's background with the Revoultionary Army is revealed.
  14. 14.0 14.1 One Piece Manga — Vol. 79 Chapter 794.
  15. 15.0 15.1 One Piece Manga and Anime — Vol. 71 Chapter 709 and Episode 638.
  16. One Piece Manga and Anime — Vol. 73 Chapter 725 and Episode 657.
  17. One Piece Manga and Anime — Vol. 73 Chapter 726 and Episode 658.
  18. One Piece Manga — Vol. 75 Chapter 743.
  19. One Piece Manga — Vol. 75 Chapter 745.
  20. One Piece Manga — Vol. 75 Chapter 746.
  21. One Piece Manga — Vol. 75 Chapter 747.
  22. One Piece Manga and Anime — Vol. 75 Chapter 750 (p. 7-12) and Episode 686, Hack meets up with Riku, Viola and Tank.
  23. One Piece Manga — Vol. 76 Chapter 755.
  24. One Piece Manga — Vol. 76 Chapter 756.
  25. One Piece Manga — Vol. 76 Chapter 758.
  26. One Piece Manga — Vol. 76 Chapter 760 (p. 3-5), Hack watches as the citizens beg Riku for help.
  27. One Piece Manga — Vol. 78 Chapter 778 (p. 2-19), Pica attempts to punch the Old King's Plateau but is stopped by Zoro.
  28. One Piece Manga — Vol. 78 Chapter 780 (p. 8), Hack learns about Law's defeat from Viola.
  29. One Piece Manga — Vol. 78 Chapter 784 (p. 4), Hack, Usopp and Viola climb down the Old King's Plateau.
  30. One Piece Manga — Vol. 79 Chapter 791.
  31. One Piece Manga — Vol. 79 Chapter 792.
  32. One Piece Manga — Vol. 80 Chapter 801.
  33. One Piece AnimeEpisode 750.

External LinksEdit

  • Dan: Wikipedia article about the meaning of Hack's epithet.

Site NavigationEdit

[v · e · ?]
Revolutionary Army
Current Members: Monkey D. Dragon  •  Sabo  •  Emporio Ivankov  •  Inazuma  •  Bartholomew Kuma   •  Terry Gilteo  •  Bunny Joe  •  Koala  •  Hack  •  Raise Max 
Associate(s): Nico Robin 
Devil Fruit Based: Horu Horu no Mi  •  Choki Choki no Mi  •  Nikyu Nikyu no Mi   •  Mera Mera no Mi  •  Hana Hana no Mi 
Fighting Style Based: Newkama Kenpo  •  Fishman Karate  •  Haki  •  Fishman Jujutsu  •  Ryusoken
Related Articles
Story Arc(s): Loguetown Arc  •  Post-Enies Lobby Arc  •  Impel Down Arc  •  Marineford Arc  •  Post-War Arc  •  Dressrosa Arc  •  Zou Arc  •  Whole Cake Island Arc
Associated Locations: Baltigo  •  Momoiro Island  •  Newkama Land
Conquered Locations: Centaurea  •  Tequila Wolf
Others: Will of the D.  •  Okama
[v · e · ?]
Corrida Colosseum
Donquixote Pirates' Diamante Army: Diamante  •  Senor Pink  •  Dellinger  •  Lao G  •  Machvise
Block A: Jesus Burgess *  •  Komaking 
Block B: Bartolomeo *  •  Bellamy  •  Elizabello II  •  Dagama  •  Abdullah  •  Jeet  •  Blue Gilly  •  Tank Lepanto  •  Ricky  •  Hack  •  Capman
Block C: Lucy * (Monkey D. LuffySabo)  •  Chinjao  •  Sai  •  Boo  •  Bobby Funk  •  Kelly Funk  •  Hajrudin  •  Jean Ango  •  Ideo  •  Fighting Bull
Block D: Rebecca *  •  Cavendish  •  Suleiman  •  Orlumbus  •  Mummy  •  Meadows  •  Agyo  •  Damask  •  Rolling Logan  •  Acilia  •  Gardoa 
Unknown Block: Spartan  •  Hera  •  Gambia
Former Participants: Kyros
Staff: Gatz
Spectators: Franky  •  Issho  •  Aremo Ganmi  •  Mukkashimi Tower
Animals: Fighting Fish
Devil Fruit Based: Mera Mera no Mi  •  Gomu Gomu no Mi  •  Bane Bane no Mi  •  Bari Bari no Mi  •  Jake Jake no Mi  •  Sui Sui no Mi  •  Hira Hira no Mi  •  Ton Ton no Mi
Fighting Style Based: Haki  •  Fishman Karate  •  Jao Kun Do  •  Hasshoken  •  Ryusoken  •  Jio-Ken
Weapons Based: Durandal
Locations: Dressrosa  •  Kano Country  •  Mogaro Kingdom  •  Prodence Kingdom  •  Rommel Kingdom  •  Majiatsuka Kingdom
Prizes: Mera Mera no Mi
Crews: Donquixote Pirates  •  Blackbeard Pirates  •  Straw Hat Pirates  •  Barto Club  •  Beautiful Pirates  •  Happo Navy
Organizations: Revolutionary Army  •  Marines  •  Yonta Maria Grand Fleet
[v · e · ?]
Ex-Toys: Kyros (Thunder Soldier)  •  Milo (Onepoco)  •  Sai  •  Boo  •  Abdullah  •  Jeet  •  Cavendish  •  Hack  •  Elizabello II  •  Flapper  •  Nico Robin  •  Hajrudin  •  Dagama  •  Chinjao  •  Ideo  •  Blue Gilly  •  Orlumbus  •  Kelly Funk  •  Bobby Funk
Related Articles
Locations: Dressrosa (Acacia  •  SMILE Factory)
Story Arcs: Dressrosa Arc
Others: Sugar (Hobi Hobi no Mi)
[v · e · ?]
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
Weapon Based: Rokutoryu  •  Kiribachi  •  Hattoryu  •  Kirisame
Others: Haki  •  Energy Steroid  •  Bubbly Coral  •  Voice of All Things
Related Articles
Story Arc(s): Fishman Island Arc  •  Whole Cake Island 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)

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.