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Four Emperors (One Piece)

Four Emperors (One Piece) is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Four Emperors (One Piece) rather than just read about it. In short: The Four Emperors (四皇, Yonkō) of the Sea are four fictional powerful pirates considered great powers in Eiichiro Oda's One Piece series. In the second half of the Grand Line known as the New World, the Four Emperors rule over separate empires consisting of several islands.

Four Emperors (One Piece) — main illustration
Four Emperors (One Piece) — illustration

Key takeaways

  • Four Emperors (One Piece) belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Four Emperors (One Piece) to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Four Emperors (One Piece) from memory before moving on to harder problems.

Reference excerpt

The Four Emperors (四皇, Yonkō) of the Sea are four fictional powerful pirates considered great powers in Eiichiro Oda's One Piece series. In the second half of the Grand Line known as the New World, the Four Emperors rule over separate empires consisting of several islands. An alliance between two or more of the Four Emperors is feared by the World Government, which maintains hegemony over most of the world. The geopolitical struggle between the World Government and the Four Emperors is the main conflict through the story. Initially the Four Emperors consists of Shanks, Whitebeard, Kaido, and Big Mom, forming a precarious balance of power with the Seven Warlords of the Sea and the Marines that keeps the world at peace; they are allowed to do as they please without interference from or to the World Government. Blackbeard's capture of Ace leads to a war between the Whitebeard Pirates and the World Government, which results in Whitebeard's death.[ch. 432, 483, 576, 581] Two years later, Blackbeard is considered to have assumed Whitebeard's position.[ch. 650] Following the events of the Onigashima war, where Big Mom and Kaido were defeated, Monkey D. Luffy and Buggy were considered the new members to replace them.

Evolution of the Emperors There have been seven different Emperors of the Sea during the story of One Piece. Big Mom was the first to form a pirate empire, followed by Whitebeard and Kaido.[ch. 853][ch. 963][ch. 1049] Shanks was the most recent Emperor of the Sea at the start of the story, and is now the longest-ruling Emperor at the present part of the story.[ch. 957][ch. 1053]

Whitebeard Pirates

The Whitebeard Pirates (白ひげ海賊団, Shirohige Kaizokudan) are a crew led by Whitebeard and sixteen division commanders, each in charge of one hundred men. Following Whitebeard's death at the hands of the Blackbeard Pirates, some of its remnants went into hiding after failing to avenge his death.

Edward Newgate Edward Newgate (エドワード・ニューゲート, Edowādo Nyūgēto), better known as Whitebeard (白ひげ, Shirohige), is the 21 ft. captain of the Whitebeard Pirates and one of the Four Emperors who comes from the island of Sphinx.[ch. 432, 474] He is an unnaturally large and burly old man who fights with a naginata as his weapon and uses the ability of the Paramecia-type Tremor-Tremor Fruit (グラグラの実, Gura Gura no Mi) to create shock waves powerful enough to cause earthquakes and tsunamis.[ch. 434, 552] Whitebeard was capable of utilizing all three types of Haki and was capable of using the advanced application for both and Haoshoku and Busoshoku Haki. Whitebeard is regarded as the world's strongest man and the only one to have matched the King of the Pirates Gold Roger in combat when Whitebeard was a member of the Rocks Pirates.[ch. 233f.] After his crew member Portgas D. Ace is sentenced to death, Whitebeard declares war on the Marines and attacks their stronghold with his fleet. Eventually after being badly wounded in the war and revealing that he saw the One Piece while not claiming it, Whitebeard is killed by the Blackbeard Pirates just before he proclaims that the One Piece is real. After Whitebeard's death, Blackbeard uses an unknown method to steal his Devil Fruit power.[ch. 576] At the time of his death, Whitebeard held a bounty of 5,046,000,000, the second-highest bounty ever for a pirate after Roger. When asked, Whitebeard reveals his ultimate ambition is to have a family. Later in life, when he forms his own pirate crew, he calls all the crewmembers his "sons" and they address him as "Father" or "pops". In the original Japanese series, he was originally voiced by Kinryu Arimoto, until his death on February 1, 2019, and was replaced by Ryūzaburō Ōtomo. In the Funimation English adaptation, his voice is supplied by R Bruce Elliott. The character is named after the real life pirate Edward Teach.

Division Commanders

Portgas D. Ace Portgas D. Ace (ポートガス・D・エース, Pōtogasu Dī Ēsu), also called "Fire Fist" Ace (火拳のエース, Hiken no Ēsu), is the 2nd division commander of the Whitebeard Pirates, captain of the Spade Pirates, and Luffy's older sworn brother.[ch. 157, 159] He is the son of Gol D. Roger and Portgas D. Rouge.[ch. 525, 550] Having eaten the Logia-type Flare-Flare Fruit/Flame-Flame Fruit (メラメラの実, Mera Mera no Mi), Ace is capable of manipulating, creating, and transforming into fire.[ch. 159] Ace was capable of using utilizing all three types of Haki.[ch. 587] Eventually, after being saved from execution, he shields Luffy from Akainu's magma attack at the cost of his own life.[ch. 574] He is buried on an unnamed island in the New World alongside his captain Whitebeard.[ch. 590] He is voiced by Toshio Furukawa, while he is voiced by Daisuke Sakaguchi as a child. In the 4Kids English adaptation, his names are changed to Portgaz D. Trace and "Heat Fist" Trace, and he is voiced by Jesse Hooker. In the Funimation English adaptation, his name is spelled Portgas D. Ace, and his voice is supplied by Travis Willingham. In the live-action series, Ace is portrayed by Xolo Maridueña.

Marco Marco "The Phoenix" (不死鳥のマルコ, Fushichō no Maruko) is Whitebeard's 1st division commander who can transform into a phoenix or a phoenix-human hybrid using the Bird-Bird Fruit: Model Phoenix. He is a skilled user of Haki.[ch. 434, 554] Like the rest of the crew, he participated in the war at Marineford to rescue Ace. After the crew disbanded, he settled in Sphinx, his captain's home island, working as a doctor for the citizens.[ch. 909] Later, he accompanied Cat Viper to Wano Country to help the Straw Hats defeat the Animal Kingdom Pirates. Marco is voiced by Masakazu Morita in the original Japanese version. In the Funimation dub, he is voiced by Bill Jenkins in Episode 151 and by Kyle Phillips starting in Episode 316.

Izo Izo (イゾウ, Izō) was the 16th division commander, who was one of Kozuki Oden's retainers in Wano as well as Kikunojo's older brother. He was later killed in the battle of Onigashima fighting Guernic and Maha of CP0. Izo is voiced by Yūsei Oda in the original Japanese version while Masamu Ono voiced him in his youth. In the Funimation dub, he is voiced by Colton Jones in earlier episodes and by Jessie James Grelle starting in Episode 963 while Kelsey Maher voiced him in his youth.

… excerpt ends here. Continue reading the full article.

Worked examples

Example 1 — a first encounter with Four Emperors (One Piece)

Start with the simplest possible case. Write down what Four Emperors (One Piece) claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Four Emperors (One Piece) before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Four Emperors (One Piece) ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Four Emperors (One Piece)

In research
Four Emperors (One Piece) appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Four Emperors (One Piece) in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Four Emperors (One Piece) is common in secondary-school and first-year university syllabi. It links to neighbouring topics Fictional sea pirates, Lists of One Piece characters, so understanding it makes those chapters shorter.
In everyday life
Look for Four Emperors (One Piece) outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Four Emperors (One Piece) in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Four Emperors (One Piece) means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Four Emperors (One Piece) out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Four Emperors (One Piece) in simple terms?

The Four Emperors (四皇, Yonkō) of the Sea are four fictional powerful pirates considered great powers in Eiichiro Oda's One Piece series. In the second half of the Grand Line known as the New World, the Four Emperors rule over separate empires consisting of several islands.

Why does Four Emperors (One Piece) matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Four Emperors (One Piece)?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Four Emperors (One Piece).

Tags

  • Fictional sea pirates
  • Lists of One Piece characters

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