There are several kings in the world with very different ruling styles.
A few fit the stereotypical description of tyrants driven by avarice and cruelty, such as the spoiled Wapol forcing his subjects to beg him for medical treatments while having no political skills, and the king of Goa ordered the burning of the Gray Terminal to clean up his kingdom's image. Such kings are viewed with scorn and disdain by their oppressed subjects, and can even be overthrown.
Others, however, are more benevolent rulers, bearing good intentions for their kingdom, and are willing to sacrifice themselves if necessary. Such examples include Nefeltari Cobra and Neptune, both of whom were well beloved by their country.
Donquixote Doflamingo, the king of Dressrosa, is something of a mix between a tyrant and a benevolent ruler. He gains popularity amongst the citizens by conning his way into their hearts with a fraudulent heroic performance and false promises, but secretly enslaves them and erasing memories of their existences for his underground profits. Only upon his true colors being exposed did the entire kingdom attempts to overthrow him, at which point he announces that he should have ruled over them with an iron fist from the beginning.
Although a king is guarded by their Royal Guards, some kings are powerful fighters and sometimes even Devil Fruit users themselves, such as Wapol, Doflamingo, and Elizabello II. Neptune was once a soldier himself, and his sons are also trained in combat and are considered to be their respective kingdom's greatest fighters. Riku Dold III was a highly trained gladiator, and even in his advanced age, he remains powerful. Vinsmoke Judge, the Germa Kingdom's king, is the direct commander of the kingdom's army, Germa 66; it is implied that he led the army in the infamous incident known as the Conquest of Four Nations, in which he single-handedly killed four kings in North Blue.
A king has great political influence and authority, and under circumstances, may be able to fraternize with criminals without consequences. The king of Goa contracted the Bluejam Pirates for their services in several occasions, and offered to use his authority as king to invite them to nobility as a reward for a huge "cleanup" mission. Although the king was merely using the pirates as scapegoats and ultimately betrayed them, this suggests that he could override their criminal statuses that the government placed on them. Kings are also known to be involved in the underworld of brokering without fear of the law, as they patronized slave shops and dealt with weapon traffickers. On the other hand, neither Kings Cobra nor Riku were able to harbor the Straw Hat Pirates for extended periods of time, due to Luffy's severe actions of defeating multiple Shichibukai, among a long list of other crimes, being a high-class threat against the government.
According to Trebol, Haoshoku Haki is proof of an individual who possesses the qualities of a king, a candidate chosen by heaven. For this reason, they believe Doflamingo is destined to be their monarch who will rule over the entire sea, and treated him with the utmost reverence.
- †: the character is deceased.
- *: the character's status is unknown. Hovering the symbol may give further details.
- ≠: the character is non-canon.
- ‡: the character is no longer part of this group. Hovering the symbol may give further details.
- Wapol was the king of the Drum Kingdom, he is also the first royal king to appear in the series. He fled his kingdom when the Blackbeard Pirates attacked and later returned only to be defeated by Monkey D. Luffy. Through his rise back to power with the Baku Baku no Mi, became king of the Black Drum Kingdom. His wife, Miss Universe, is the queen.
- Dalton became the new king of the Drum Kingdom after Wapol's defeat, changing it to the Sakura Kingdom.
- Nefeltari Cobra is the king of Alabasta. He is the 12th line of the House of Nefertari, Princess Vivi is designated to be the 13th ruler in the line. His late wife, Nefertari Titi, was the queen of the kingdom.
- Thalassa Lucas is the king of Ilusia 6 years before the start of the series.
- Emporio Ivankov is the king/queen of the Kamabakka Queendom.
- Neptune is the king of the Ryugu Kingdom. His sons are the princes Fukaboshi, Ryuboshi, and Manboshi, and his daughter is the princess Shirahoshi.
- King Riku Dold III is the preceding, as well as the succeeding, king of Dressrosa to the one who usurped his former position, Donquixote Doflamingo. After Doflamingo was defeated and captured, Riku Dold was requested to return to his former position.
- Elizabello II is the king of the Prodence Kingdom.
- Gancho is the king of the Tontatta Kingdom.
- Kano Country is ruled by an unnamed king.
- Inuarashi is one of the two rulers of the Mokomo Dukedom.
- Nekomamushi is one of the two rulers of the Mokomo Dukedom.
- Stelly is the recently crowned king of the Goa Kingdom.
- Vinsmoke Judge is the king of the Germa Kingdom.
- In the third movie, Mobambi became the new ruler of Crown Island (non-canon).
- There was an unnamed king in an unknown kingdom 15 years before the start of the series, who nearly surrendered his kingship to pirates, had Rob Lucci not executed the 500 soldiers being held hostage.
- Wapol's father was ruling when Gol D. Roger was executed. His death led to his son succeeding him. In movie 9, he had another son, Musshuru, as the first prince of the kingdom.
- There was an unnamed king of Lvneel 400 years before the start of the series.
- There was an unnamed king in an unknown kingdom 15 years before the start of the series, that traveled to the Kamabakka Queendom, and came back as an okama, which tore both their family and the country apart, leading to the prince to turn to piracy.
- There was an unnamed king ruling the Goa Kingdom 12 years before the start of the series.
- Donquixote Doflamingo is the former king of Dressrosa, having usurped the position from Riku Dold III, until he was defeated by Monkey D. Luffy and arrested by Admiral Fujitora after his Shichibukai position voided.
- A king of an unknown kingdom has surrendered once Doflamingo was defeated, knowing he lost his supplier of weapons for the war.
- In the third movie, Kirin Lion was the "Animal King" of Crown Island until his death.
- Hody Jones gave himself the title of king after overthrowing the Ryugu Kingdom.
- Caesar Clown called himself the "King of the Land of Death" (死の国の王 Shi no Kuni no Ō?) after assimilating Shinokuni.
- Chopper was thought to be the new king of the non-canon Crown Island until proven wrong.
King as an Epithet
- Gol D. Roger: Pirate King (海賊王 Kaizoku-Ō?)
- Crocodile: Desert King (砂漠の王 Sabaku no Ō?)
- Masira: Salvage King (サルベージ王 Sarubēji-Ō?)
- Shoujou: Sonar King (海底探索王 Kaitei Tansaku-Ō?)
- Sogeking: King of the Snipers (狙撃の王様 Sogeki no Ō-sama?)
- Ryuma: Ryuma de King (リューマ・ド・キング Ryūma do Kingu?)
- Silvers Rayleigh: Dark King (冥王 Mei-Ō?)
- Avalo Pizarro: Corrupt King (悪政王 Akusei-Ō?)
- Brook: Soul King (ソウルキング Souru Kingu?)
- Elizabello II: Fighting King (戦う王 Tatakau Ō?)
- Riku Dold III: King of Miracles
- Nekomamushi: King/Ruler of Night (夜の王 Yoru no Ō?)
- Inuarashi: King/Ruler of Day (昼の王 Hiru no Ō?)
- Eric Dow (filler): King (キング Kingu?)
- King - Wikipedia article about the King title.
- ↑ One Piece Manga and Anime — Vol. 15 Chapter 131 and Episode 79, Wapol, the king of Drum Island, is introduced.
- ↑ One Piece Manga and Anime — Vol. 60 Chapter 586 and Episode 500, Goa's king offered Bluejam and his crew to become nobles in exchange for burning down the Gray Terminal.
- ↑ One Piece Manga and Anime — Vol. 60 Chapter 587 and Episode 501, Goa's king betrayed the Bluejam Pirates.
- ↑ 4.0 4.1 One Piece Manga and Anime — Vol. 79 Chapter 793 (p. 7) and Episode 736, A king surrendered once Joker was defeated.
- ↑ One Piece Manga — Vol. 78 Chapter 782 (p. 4), Trebol explaining that Doflamingo is fitting to be their king due to his Haoshoku Haki.
- ↑ One Piece Manga and Anime — Vol. 22 Chapter 203 (p. 12) and Episode 123, Cobra says his title as the king of Alabasta.
- ↑ 7.0 7.1 One Piece Manga — Vol. 79 Chapter 792 (p. 11-15), Dold III was requested to return being king after Doflamingo's downfall.
- ↑ 8.0 8.1 One Piece Manga — Vol. 82 Chapter 823.
- ↑ 9.0 9.1 9.2 9.3 One Piece Manga — Vol. 81 Chapter 807 (p. 14-15), Wanda introduces the two rulers of the Mokomo Dukedom to the Straw Hat Pirates.
- ↑ One Piece Manga — Vol. 83 Chapter 832 (p. 20), Vinsmoke Judge is introduced as the King of the Germa Kingdom.
- ↑ One Piece Manga and Anime — Vol. 64 Chapter 628 (p. 4) and Episode 548, Hody declares himself to be the new king after overthrowing the Ryugu Kingdom.
- ↑ One Piece Manga and Anime — Vol. 70 Chapter 691 (p. 12-13) and Episode 617, Caesar proclaims to be the King of the Land of Death upon assimilating Shinokuni.
- ↑ One Piece Manga and Anime — Vol. 1 Chapter 1 (p. 1) and Episode 1, Gol D. Roger referred as the Pirate King.
- ↑ One Piece Manga and Anime — Vol. 17 Chapter 155 (p. 4-5) and Episode 92, Citizens calling Crocodile as the Desert King.
- ↑ One Piece Manga and Anime — Vol. 24 Chapter 219 (p. 1) and Episode 144, Masira's epithet is introduced in the title.
- ↑ One Piece Manga and Anime — Vol. 24 Chapter 226 (p. 1) and Episode 147, Shoujou's epithet is introduced in the title.
- ↑ One Piece Manga and Anime — Vol. 45 Chapter 435 (p. 16-17) and Episode 320, Sogeking's nickname revealed after attacking Enies Lobby.
- ↑ One Piece Manga — Wanted! Monsters (p. 155), A villager remembers that Ryuma was called "King" by those he rescued.
- ↑ One Piece Manga and Anime — Vol. 51 Chapter 501 (p. 12) and Episode 395, Rayleigh is introduced as the Dark King.
- ↑ One Piece Manga and Anime — Vol. 59 Chapter 576 (p. 3) and Episode 485, Avalo Pizarro is revealed by the Marines.
- ↑ One Piece Manga and Anime — Vol. 61 Chapter 598 (p. 10) and Episode 517, Brook is famous as a worldwide singer.
- ↑ One Piece Manga and Anime — Vol. 71 Chapter 704 and Episode 633.
- ↑ One Piece Anime — Episode 48, Eric Dow's past is told to Luffy by Raoul.