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Kaido Portrait
Japanese Name: カイドウ
Romanized Name: Kaidō
English Name: Kaido
Debut: N/A
Affiliations: His own crew; Yonko[1]
Occupations: Pirate; Captain
Epithet: "Kaido of the Beasts" (百獣のカイドウ Hyakujū no Kaidō?)
(Viz: Kaido, The King of the Beasts)[2]
Birthday: May 1st[3]

Kaido of the Beasts[2] is one of the Yonko,[1] and the third one to be mentioned by name.[4] He is also one of the central antagonists of the Pirate Alliance Saga. According to Trafalgar D. Water Law, Kaido is known as the "strongest creature in the world".[5]

Kaido's name was first mentioned by Gekko Moriah shortly after having obtained Luffy's shadow.[6] His title of Yonko was revealed just after the Straw Hat Pirates defeated Moriah.[4]


Though not much is known about Kaido's physical appearance, he was originally portrayed as having a wide face, pointy nose, sinister grin and one visible eye on the right side of his face upon being revealed in silhouette during the Post-Enies Lobby Arc.

However, like Charlotte Linlin, this could have been an early design by Oda, and have changed.


From what is shown, Kaido is a merciless and confident warrior who never lets an opportunity slip by, as evidenced by his plan to attack Whitebeard during the latter's attempt to save Portgas D. Ace from execution.[7]

He is also pitiless and not open to negotiations and excuses, which makes it seemingly unwise to provoke or underestimate him. This is enforced dramatically when Donquixote Doflamingo, a Shichibukai and World Noble known for his fearless and confident attitude, is very afraid of Kaido when he may be unable to fulfill his end of their accord due to Trafalgar D. Water Law holding Caesar Clown as a hostage.[8]

It was also stated by Scotch that Kaido has a favorite island, a winter island that was guarded by the cyborg and visited by X Drake. He has some care for his subordinates, or at least values Scotch, as Scotch confirmed that Kaido would be angry if Scotch were to be attacked.[9]



Donquixote Doflamingo and Caesar Clown

Kaido is a black market customer of Donquixote Doflamingo.[10] Caesar Clown produces large amounts SAD substance, which is then given to Doflamingo to use to manufacture the artificial Devil Fruit SMILES, which is in turn sold to Kaido to create an army of Artificial Zoan Devil Fruit users. However, despite this, they do not seem to be on friendly terms, as Law asserted that Kaido will slaughter Doflamingo if he cannot supply Kaido with Zoan fruits anymore. Doflamingo shows great fear of Kaido as it is implied that he would rather face the Admirals than deal with an angry Kaido.[8]


Gekko Moriah

Kaido once had a rivalry with former Shichibukai Gekko Moriah. The two of them fought in the New World. Eventually, Kaido won and apparently slaughtered Moriah's entire crew.[4][11] This had an adverse effect on Moriah's perception of subordinates, and led him to seek revenge against Kaido by building an army of undead soldiers.

Straw Hat and Heart Pirates Alliance

Trafalgar D. Water Law allegedly sought out an alliance with Monkey D. Luffy and the Straw Hat Pirates in order to dethrone Kaido. Luffy agreed with the alliance and even declared that he will defeat all four Yonko.[2] Even though Law suggested that the chance of success with the alliance is 30%, Luffy remains undeterred.[12]

However, it is then revealed by Law himself that he only sought out an alliance with Luffy because he wanted to use the Straw Hats to destroy the factory producing SMILEs, and not as a means to dethrone Kaido.[13] Law also notes if they kill Doflamingo and destroy the factory Kaido will transfer his grudge to the pirate alliance.

X Drake

Prior to the timeskip, X Drake seemed to be interested in meeting Kaido, having willingly provoked his subordinate, Scotch, on the Yonko's favorite Winter island in order to gain his attention.[9] Though his relationship with Kaido isn't currently clear, Drake was shown to squash a rebellion perpetrated against Kaido's subordinates on the same Winter Island.


Edward Newgate

As both were Yonko, Kaido and Edward Newgate were not allies, yet would not, under normal circumstances, provoke each other. However, Kaido saw the opportunity to take down his rival prior to the impending Battle of Marineford, and did not hesitate to take advantage to attempt so.[7] It is unknown why Kaido would want to kill Whitebeard.


Since both are Yonko, Kaido and Shanks are enemies, but would not under any normal circumstances provoke each other. However, when Kaido tried to stop Whitebeard from going to Marineford, Shanks interfered and clashed with him, in order to allow the other Yonko to rescue Ace.[7] It is not known what happened in their encounter, but Shanks arrived at Marineford unharmed.[14]

Abilities and Powers

Kaido's Artificial Zoan Army

Kaido's artificial Zoan-class army.

As one of the Yonko, Kaido is one of the strongest pirates in the world. He attempted to take Whitebeard's life, which is something that few would dare, and clashed with Shanks.[7] He also once fought against Gekko Moriah of the Shichibukai, and emerged victorious.[6] Being a Yonko in and of itself is a testament to his power. It was also stated by the Gorosei that he is one of the few people capable of stopping Blackbeard.[15]

According to Law, he is said to be "the strongest creature in the world" (この世における最強生物 kono yo ni okeru saikyō seibutsu?),[5] insinuating that he is not even human, and suggested that he can easily kill Doflamingo, who is a world famous pirate and a Shichibukai. Further testament to his strength is that Law speculated that even with an alliance with the Straw Hats, their chance of defeating him is only about 30%.[12]

Similar to the other Yonko, Kaido also seems to have many underlings and allied pirates, and is able to claim islands as his own territories.[9] With Caesar and Doflamingo as his associates, Kaido has created an army of over 500 Artificial Zoan-class Devil Fruit users.[16][17]



At one point in his life, he fought with Gekko Moriah and defeated him in the New World.[6][4] Though the details of the battle have yet to be fully explained, it is implied that he is responsible for the death of Moriah's original crew.[11]

At some point in the last four years, he collaborated with the Shichibukai Donquixote Doflamingo and rogue Marine scientist Caesar Clown to create an army of artificial Zoan Devil Fruit users.[10]

Marineford Arc

When Whitebeard attempted to save Ace from his execution at Marineford, Kaido tried to attack him. However, Shanks intercepted Kaido before he could reach Whitebeard,[7] and Kaido either retreated or gave up, as Shanks managed to arrive at Marineford at the end of the war.[14]

Major Battles

Translation and Dub Issues

Kaido's epithet, Hyakujū (百獣?), literally translates to "Hundred Beasts". However, in Japanese, its meaning is somewhat closer to something along the line of "all kinds of beasts".


  • Kaido is the only Yonko to not be formerly introduced yet.
  • When mentioned, Kaido was the only Yonko member whose real name was used, instead of their epithet.


  1. 1.0 1.1 One Piece Manga and Anime — Vol. 45 Chapter 432 (p. 7) and Episode 316, Kaido is seen as one of the Yonko mentioned by Garp.
  2. 2.0 2.1 2.2 One Piece Manga and Anime — Vol. 70 Chapter 696 (p. 19) and Episode 622.
  3. One Piece Blue Deep: Characters World (p. 43), Kaido's birthday is revealed.
  4. 4.0 4.1 4.2 4.3 One Piece Manga and Anime — Vol. 50 Chapter 483 (p. 6) and Episode 375, a random pirate states Kaido to be one of the Yonko.
  5. 5.0 5.1 One Piece Manga and Anime — Vol. 70 Chapter 697 (p. 2) and Episode 623, Law refers to Kaido as the "strongest creature in the world".
  6. 6.0 6.1 6.2 One Piece Manga and Anime — Vol. 47 Chapter 456 (p. 10) and Episode 350, Moriah notes "that bastard" Kaido would not have beaten him if he had Luffy's shadow that time.
  7. 7.0 7.1 7.2 7.3 7.4 One Piece Manga and Anime — Vol. 55 Chapter 533 (p. 3) and Episode 434, Kaido is reported to have tried to attack Whitebeard.
  8. 8.0 8.1 One Piece Manga and Anime — Vol. 70 Chapter 697 (p. 17-19) and Episode 623, Law holds Kaido's potential fury against Doflamingo.
  9. 9.0 9.1 9.2 One Piece Manga and Anime — Vol. 61 Chapter 595 (p. 4) and Episode 513, X Drake attacks Kaido's favorite island.
  10. 10.0 10.1 One Piece Manga and Anime — Vol. 70 Chapters 697698 and Episodes 623625, Doflamingo and Kaido's business deal explained.
  11. 11.0 11.1 One Piece Manga and Anime — Vol. 49 Chapter 481 (p. 8-9) and Episode 373, Moriah explains to Luffy a bit of what happened to him in the past.
  12. 12.0 12.1 One Piece Manga and Anime — Vol. 70 Chapter 697 (p. 2) and Episode 623, Law states that their operation has a 30% chance of success.
  13. One Piece Manga and Anime — Vol. 73 Chapter 724 (p. 18-19) and Episode 655.
  14. 14.0 14.1 One Piece Manga and Anime — Vol. 59 Chapter 580 (p. 2) and Episode 489, High-ranking marines note about Shanks' skirmish with Kaido which happened "just yesterday" and the former's already presence.
  15. One Piece Manga and Anime — Vol. 60 Chapter 594 (p. 3) and Episode 511, the Gorosei noted Kaido as one of the potential forces of stopping Blackbeard.
  16. One Piece Manga and Anime — Vol. 69 Chapter 689 (p. 16-17) and Episode 615, Caesar explains the dealings between himself, Doflamingo and Kaido.
  17. One Piece Manga and Anime — Vol. 70 Chapter 698 (p. 16) and Episode 625, Law estimates the number of Kaido's army.

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