Epithet

An epithet is a name to describe a person or object. It can also be interpreted as a nickname or a title granted to a person. Sometimes, a codename may also fall into this category.

Epithet in One Piece
In One Piece, there are plenty of people with epithets. Plenty of famous characters are known by these nicknames, especially pirates. Usually these titles are granted to pirates by the World Government when they are assigned bounties, to make them more well known to the world, but there are exceptions that the pirate has already chosen a nickname for himself prior to being marked down for being wanted.

Aside from pirates, there are also others who gain epithets, such as other types of criminals, Marine officers, or other significant figures.

Usually, these assigned epithets are based on the description of the person's attributes, skills, or what they simply are.

Straw Hat Pirates

 * Monkey D. Luffy: "Straw Hat" (麦わらのルフィ)
 * Roronoa Zoro: "Pirate Hunter" (海賊狩り)
 * Nami: "Cat Burglar" (泥棒猫)
 * Usopp:
 * "Sogeking" (そげキング)
 * "King of the Snipers" (狙撃の王様)
 * Sanji: "Black Leg" (黒脚)
 * Tony Tony Chopper: "Cotton Candy Lover" (わたあめ大好き)
 * Nico Robin:
 * "Miss All Sunday" (ミス・オールサンデー)
 * "Devil Child" (悪魔の子)
 * Cutty Flam:
 * "Franky" (フランキー)
 * "Cyborg" (鉄人)
 * Brook:
 * "Humming" (鼻唄)
 * "Dead Bones" (for being a revived skeleton)
 * "Gentleman Skeleton" (for being a skeletal "gentleman")

Shichibukai
Note: Crocodile, Jinbei and Marshall D. Teach are part of this list.
 * Juracule Mihawk: "Hawk Eyes" (鷹の目のミホーク)
 * Bartholomew Kuma:
 * "Tyrant" (暴君)
 * "PX-0" (ピーエグクス・ぜロ)
 * Boa Hancock:
 * "Pirate Empress" (海賊女帝)
 * "Snake Princess" (蛇姫)

Blackbeard Pirates

 * Marshall D. Teach: "Blackbeard" (黒ひげ)
 * Van Auger: "The Supersonic" (音越)
 * Jesus Burgess: "The Champion" (チャンピオン)
 * Doc Q: "Grim Reaper" (死神)
 * Shiryuu: "of the Rain" (雨のシリュウ)

Sunny Pirates

 * Fisher Tiger: "The Adventurer" (冒険家)
 * Jinbei: "Knight of the Sea" (海侠)
 * Arlong: "Saw-tooth" (ノコギリのアーロン)

Jolly Roger Pirates
Note: Shanks and Buggy are part of this list.
 * Gol D. Roger: "Pirate King" (海賊王)
 * Silvers Rayleigh:
 * "Dark King" (冥王)
 * "Right Hand of the Pirate King" (海賊王の右腕)

Buggy Pirates

 * Buggy: "The Clown" (道化のバギー)
 * Alvida: "Iron-Mace" (金棒)
 * Mohji: "The Beast Tamer" (猛獣使い)
 * Cabaji: "The Acrobat" (曲芸)

Red-Haired Pirate Crew

 * Shanks: "Red-Hair" (赤髪のシャンクス)
 * Rockstar: "Rookie" (新入り)

Whitebeard Pirates

 * Edward Newgate:
 * "Whitebeard" (白ひげ)
 * "The Strongest Man in the World" (世界最強の男)
 * "Man closest to One Piece" (ワンピースに最も近い男)
 * Marco: "Phoenix" (不死鳥マルコ)
 * Portgas D. Ace: "Fire Fist" (火拳のエース)
 * Jozu: "Diamond" (ダイヤモンド・ジョズ)
 * Vista: "Sword Flower" (花剣)
 * Atomos: "Water Buffalo" (水牛)

Whitebeard's Allies

 * Doma: "Bohemian Knight" (遊騎士)
 * Makugai: "Thunder Lord" (雷卿)
 * Squardo: "Great Whirlpool Spider" (大渦蜘蛛)
 * Oars Jr.: "Little" Oars Jr. (リトルオーズJr.)
 * Whitey Bay: "Ice Witch" (氷の魔女)

The Eleven Supernovas
Note: Monkey D. Luffy and Roronoa Zoro are part of this list.
 * Capone Bege: "Gang" (ギャング)
 * Jewelry Bonney: "Big Eater" (大喰らい)
 * Basil Hawkins: "The Magician" (魔術師)
 * Eustass Kid: "Captain"
 * Scratchmen Apoo: "Roar of the Sea" (海鳴り)
 * X. Drake: "Red Flag" (赤旗)
 * Killer: "Massacre Soldier" (殺戮武人)
 * Urouge: "Mad Monk" (怪僧)
 * Trafalgar Law: "Dark Doctor"

Other Pirates

 * Kuro:
 * "of a Thousand Plans" (百計のクロ)
 * "Kurahadol" (クラハドール)
 * Jango:
 * "Hypnotist"
 * "One-Two"
 * "Double Crosser" (寝返りのジャンゴ)
 * Zeff: "Red-Leg" (赫足のゼフ)
 * Don Krieg:
 * "Pirate Admiral" (｢海賊艦隊｣提督 首領・クリーク)
 * "Foul Play" (ダマシ討ちのクリーク)
 * Pearl: "The Iron Wall" (鉄壁のパール)
 * Gin: "Man-Demon" (鬼人のギン)
 * Yorki: "Calico" (キャラコ)
 * Dorey: "The Blue Ogre" (青鬼のドリー)
 * Burogy: "The Red Ogre" (赤鬼のブロギー)
 * Wapol: "Tin-Plate" (ブリキのワポル)
 * Masira: "Salvage King" (サルベージ王)
 * Shoujou: "Sonar King" (海底探索王)
 * Roshio: "The Executioner" (処刑人)
 * Bellamy:
 * "The Hyena" (ハイエナのベラミー)
 * "The Big-Time Rookie" (大型ルーキー)
 * Sarquiss: "Big Knife" (ビッグナイフ・サーキース)
 * Foxy: "The Silver Fox" (銀ギツネのフォクシー)
 * Pickles: "Tackle Demon" (タックルマシーン)
 * Absalom:
 * "Graveyard" (墓場のアブサロム)
 * "Ero-salom" (エロサロム)
 * Perona: "Ghost Princess" (ゴーストプリンセス)
 * Lola: "Marriage Proposal" (求婚のローラ)
 * Dias: "Devil" (デビル・ディアス)
 * Kinjishi: "The Flying Pirate" (空飛ぶ海賊 金獅子)
 * San Juan Wolf: "Colossal Battleship" (巨大戦艦 サンファン・ウルフ)
 * Basco Shot: "Mighty Drinker" (大酒のバスコ・ショット)

Baroque Works
Note: Nico Robin is a part of this list.
 * Crocodile:
 * "Mr. 0" (ミスター・ゼロ)
 * "Sir" (サー・クロコダイル)
 * Daz Bones: "Mr. 1" (ミスター・ワン)
 * Paula: "Miss Doublefinger" (ミス・ダブルフィンガー)
 * Bentham: "Mr. 2 Bon Kurei" (ミスター・ツー ボン・クレー)
 * Galdino: "Mr. 3" (ミスター・スリー)
 * Igaram:
 * "Mr. 8" (ミスター・エイト)
 * "Igarappoi" (イガラッポイ)
 * Nefertari Vivi "Miss Wednesday" (ミス・ウェンズデー)

Sky Island Residents

 * Wiper: "Berserker" (戦鬼ワイパー)
 * Gan Fall: "Sky Knight" (空の騎士)
 * Calgara: "Shandra's Demon" (シャンドラの魔物)

God's Warriors

 * Eneru: "God" (神・エネル)
 * Ohm: "Skybreeder" (スカイブリーダー・オーム)
 * Gedatsu: "Sky Boss" (空番長ゲダツ)
 * Shura: "Skyrider" (スカイライダー・シュラ)
 * Satori: "of the Forest" (森のサトリ)

Marines

 * Morgan: "Axe-Hand" (斧手のモーガン)
 * Fullbody:
 * "Iron Fist" (鉄拳のフルボディ)
 * "Double Iron Fist" (両鉄拳のフルボディ)
 * Smoker: "The White Hunter" (白猟のスモーカー)
 * Hina: "The Black Cage" (黒檻のヒナ)
 * Tsuru: "The Great Tactician" (大参謀)
 * Sengoku: "The Buddha" (仏のセンゴク)
 * T-Bone: "Ship Cutter" (船切り)
 * Kuzan: "Blue Pheasant" (青雉)
 * Sakazuki: "Red Dog" (赤犬)
 * Borsalino: "Yellow Monkey" (黄猿)
 * Monkey D. Garp:
 * "The Fist" (ゲンコツのガープ)
 * "Hero of the Marines" (海軍の英雄)
 * Attachan: "Flaming" (炎のアタっちゃん)

Other Epithets

 * Pell: "The Falcon" (ハヤブサのペル)
 * Chaka: "The Jackal" (ジャッカルのチャカ)
 * Montblanc Norland: "Liar" (うそつき)
 * Nero: "The Sea Weasel" (海イタチ)
 * Fukurou: "The Silent" (音無しのフクロウ)
 * Monkey D. Dragon: "Revolutionary" (革命家)
 * Ryuuma: "Expert Fencer" (達人剣豪リューマ)
 * Oars:
 * "The Devil" (魔人)
 * "The Continent-Puller" (国引き)
 * Jigorou: "of the Wind" (風のジゴロウ)
 * Duval: "Iron Mask" (鉄仮面のデュバル)
 * Emporio Ivankov:
 * "Miracle Person" (奇跡の人)
 * "Queen" (女王)

Anime Only

 * Billy: "The Bandit" (for being a bandit)
 * Dick:
 * "Mountain Whale" (reason unknown)
 * "The Bandit" (for being a bandit)
 * Woonan: "Great Gold Pirate" (for his legendary treasure)
 * Galley: "of the Crescent-Moon" (三日月のギャリー)
 * Shiyo: "the Lizard" (石竜子のシヨ)
 * Daddy Masterson: "the Father" (子連れのダディ)
 * Erik: "The Whirlwind" (旋風のエリック)
 * Bigalo: "The Hanged Man" (reason unknown)
 * Chiqicheetah: "Pirate Runner" (for his speed)
 * Puzzle: "Phoenix" (不死鳥パズール)

Trivia

 * Epithets were used by pirates in the real world to hide their identity often to protect relatives, friends and contacts from their govenments and persecution.