Epithet

An epithet (通り名) is a title attributed to a person, usually based on the thing that leaves the greatest impact about them, be it their deeds, personality, or physical traits. In the One Piece universe, many pirates and Marines have one. 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, though there are exceptions. Some pirates are already known by an established epithet prior to being marked down for being wanted. This differs from aliases and code names, which serves as alternate names to hide one's identity as opposed to amplifying it.

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:
 * "King of the Snipers" (狙撃の王様)
 * "God" (ゴッド)


 * Vinsmoke Sanji: "Black Leg" (黒足)
 * Tony Tony Chopper: "Cotton Candy Lover" (わたあめ大好き)
 * Nico Robin:
 * "Devil Child" (悪魔の子)
 * "Light of the Revolution" (革命の灯)


 * Franky:
 * "Cyborg" (サイボーグ)
 * "Iron Man" (鉄人)


 * Brook:
 * "Humming" (鼻唄)
 * "Soul King" (ソウルキング)


 * Jinbe: "Knight of the Sea" (海侠)

Shichibukai
Note: Former Shichibukai are not on this list.
 * Dracule Mihawk: "Hawk Eyes" (鷹の目のミホーク)
 * Bartholomew Kuma: "Tyrant" (暴君)
 * Boa Hancock:
 * "Pirate Empress" (海賊女帝)
 * "Snake Princess" (蛇姫)


 * Edward Weevil: "Whitebeard Jr." (白ひげJr.)

Buggy and Alvida Alliance

 * Buggy:
 * "The Clown" (道化のバギー)
 * "The Star Clown" (千両道化)


 * Alvida: "Iron-Mace" (金棒)
 * Mohji: "The Beast Tamer" (猛獣使い)
 * Cabaji: "The Acrobat" (曲芸)

Red Hair Pirates

 * Shanks: "Red-Haired" (赤髪のシャンクス)
 * Yasopp: "Chaser"

Beasts Pirates

 * Kaido: "Kaido of the Beasts" (百獣のカイドウ)
 * Jack: "Jack the Drought" (旱害のジャック)

Blackbeard Pirates

 * Marshall D. Teach: "Blackbeard" (黒ひげ)
 * Van Augur: "The Supersonic" (音越)
 * Jesus Burgess: "Champion" (チャンピオン)
 * Doc Q: "Death God" (死神)
 * Shiliew: "of the Rain" (雨のシリュウ)
 * Catarina Devon: "Crescent Moon Hunter" (若月狩り)
 * Sanjuan Wolf: "Colossal Battleship" (巨大戦艦)
 * Vasco Shot: "Mighty Drinker" (大酒のバスコ・ショット)
 * Avalo Pizarro: "Corrupt King" (悪政王)
 * Laffitte: "Demon Sheriff" (鬼保安官)

Big Mom Pirates

 * Charlotte Linlin: "Big Mom" (ビッグ・マム)
 * Charlotte Cracker: "Thousand Arms Cracker" (千手のクラッカー)
 * Charlotte Mont-d'Or: "Scribe" (書司)
 * Tamago: "Baron Tamago" (タマゴ男爵)
 * Bobbin: "Sweeper" (始末屋)
 * Charlotte Amande: "Demon Lady" (鬼夫人)
 * Randolph: "Crane Rider" (鶴騎士（クレインライダー）)
 * Streusen: "Gourmet Knight" (美食騎士)

Whitebeard Pirates
Note: Defector Marshall D. Teach is not part of this list.
 * 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: "Flower Sword" (花剣)
 * Atmos: "Water Buffalo" (水牛)

Worst Generation
Note: Monkey D. Luffy, Roronoa Zoro, and Marshall D. Teach are listed in the section above.

Heart Pirates

 * Trafalgar Law: "Surgeon of Death" (死の外科医)

Kid Pirates

 * Eustass Kid: "Captain" (キャプテン)
 * Killer: "Massacre Soldier" (殺戮武人)

On Air Pirates

 * Scratchmen Apoo: "Roar of the Sea" (海鳴り)

Hawkins Pirates

 * Basil Hawkins: "The Magician" (魔術師)

Fire Tank Pirates

 * Capone Bege: "Gang" (ギャング)
 * Vito: "Monster Gun" (怪銃)

Drake Pirates

 * X Drake: "Red Flag" (赤旗)

Bonney Pirates

 * Jewelry Bonney: "Big Eater" (大喰らい)

Fallen Monk Pirates

 * Urouge: "Mad Monk" (怪僧)

Roger Pirates
Note: Shanks and Buggy are listed in the sections above.
 * Gol D. Roger:
 * "Pirate King" (海賊王)
 * "Gold Roger" (ゴールド・ロジャー)


 * Silvers Rayleigh:
 * "Right Hand of the Pirate King" (海賊王の右腕)
 * "Dark King" (冥王)

Giant Warrior Pirates

 * Dorry: "The Blue Ogre" (青鬼のドリー)
 * Brogy: "The Red Ogre" (赤鬼のブロギー)
 * Jarl: "Waterfall Beard" (滝ひげのヤルル)
 * Jorl: "Mountain Beard" (山ひげのヨルル)

Saruyama Alliance

 * Masira: "Salvage King" (サルベージ王)
 * Shoujou: "Sonar King" (海底探索王)

Foxy Pirates

 * Foxy: "The Silver Fox" (銀ギツネのフォクシー)

Groggy Monsters

 * Hamburg: "Full-Dash" (フルダッシュ)
 * Pickles: "Tackle Machine" (タックルマシーン)
 * Big Pan: "the Wotan" (ウォータンのビッグパン)

Krieg Pirates

 * Krieg:
 * "Don" (首領（ドン）・クリーク)
 * "Foul Play" (ダマシ討ちのクリーク)


 * Gin: "Man-Demon" (鬼人のギン)
 * Pearl: "The Iron Wall" (鉄壁のパール)

Sun Pirates

 * Fisher Tiger:
 * "The Adventurer" (冒険家)
 * "Hero of Slaves" (奴隷解放の英雄)
 * Wadatsumi: "Large Monk" (大入道)

Whitebeard's Allies
Note: Jinbe and Monkey D. Luffy are listed in the above sections.
 * Doma: "Bohemian Knight" (遊騎士)
 * McGuy: "Thunder Lord" (雷卿)
 * Squard: "Maelstrom Spider" (大渦蜘蛛)
 * Whitey Bay: "Ice Witch" (氷の魔女)

Impostor Straw Hat Pirates

 * Demaro Black: "Three Tongued" (三枚舌のデマロ・ブラック)
 * Lip Doughty: "Service" (リップ・”サービス”・ドウティ)
 * Albion: "Gashed" (深手のアルビオン)

Caribou Pirates

 * Caribou: "Wet-Haired" (濡れ髪のカリブー)
 * Coribou: "Blood-Splatterer" (返り血のコリブー)

Donquixote Pirates

 * Donquixote Doflamingo: "Heavenly Yaksha" (天夜叉)
 * Caesar Clown: "Master" (M（マスター）)
 * Vergo: "Demon Bamboo" (鬼竹のヴェルゴ)
 * Monet: "Snow Woman" (雪女)
 * Diamante: "Hero of the Colosseum" (コロシアムの英雄)

Bellamy Pirates

 * Bellamy:
 * "The Hyena" (ハイエナのベラミー)
 * "The Big-Time Rookie" (大型ルーキー)


 * Sarkies: "Big Knife" (ビッグナイフ・サーキース)

Straw Hat Grand Fleet

 * Orlumbus: "Massacre Ruler" (殺戮支配者)
 * Ideo: "Destruction Cannon" (破壊砲)
 * Hajrudin: "Pirate Mercenary" (海賊傭兵)

Beautiful Pirates

 * Cavendish:
 * "Pirate Prince" (海賊貴公子)
 * "White Horse" (白馬のキャベンディッシュ)


 * Suleiman: "Neck Slasher" (首はねスレイマン)

Barto Club

 * Bartolomeo: "Cannibal" (人食いのバルトロメオ)
 * Gambia: "Missionary" (宣教師)

Other Pirates
Note: Does not include former pirates.
 * Galley: "of the Crescent-Moon" (三日月のギャリー)
 * Spiel: "the Hexagon" (六角のシュピール)
 * Kuro: "of a Hundred Plans" (百計のクロ)
 * Arlong: "The Saw" (ノコギリのアーロン)
 * Crocodile: "Desert King" (砂漠の王)
 * Daz Bones: "The Killer" (殺し屋)
 * Roshio: "The Executioner" (処刑人)
 * Chesskippa: "Hanger-on" (スネかじりのチェスキッパ)
 * Lola: "Marriage Proposal" (求婚のローラ)
 * Yorki: "Calico" (キャラコ)
 * Shiki:
 * "Golden Lion" (金獅子のシキ)
 * "The Flying Pirate" (空飛ぶ海賊)


 * Scotch: "Iron Boy" (アイアンボーイ)
 * Gyro: "Crab-Hand" (蟹手のジャイロ)
 * Zeo: "Noble of Fishman District" (魚人街の貴族)
 * Raccoon: "Pretended Sleep" (狸寝入りの)

Marines
Note: Does not include renegades or spies, who are no longer considered Marines.
 * Sengoku:
 * "The Buddha" (仏のセンゴク)
 * "The Resourceful General" (智将)


 * Monkey D. Garp:
 * "The Fist" (ゲンコツのガープ)
 * "Hero of the Marines" (海軍の英雄)


 * Tsuru: "Great Staff" (大参謀)
 * Smoker: "The White Hunter" (白猟のスモーカー)
 * Maynard: "The Pursuer" (追撃のメイナード)
 * Bastille: "Shark Cutter" (鮫切り)
 * T-Bone: "Ship Cutter" (船切り)
 * Hina: "The Black Cage" (黒檻のヒナ)
 * Fullbody:
 * "Iron Fist" (鉄拳のフルボディ)
 * "Double Iron Fist" (両鉄拳のフルボディ)


 * Jango:
 * "One-Two" (1・2のジャンゴ)
 * "Double Crosser" (寝返りのジャンゴ)


 * Attach: "Flaming" (炎のアタっちゃん)

CP9

 * Spandam: "Spanda" (スパンダ) (by Franky)
 * Funkfreed: "Elephant Sword" (象剣)
 * Nero: "The Sea Weasel" (海イタチ)
 * Fukuro: "The Silent" (音無しのフクロウ)

Revolutionary Army
Note: Former revolutionary Bartholomew Kuma is listed above.
 * Monkey D. Dragon:
 * "Revolutionary" (革命家)
 * "The Most Wanted Criminal in the World" (世界最悪の犯罪者)


 * Emporio Ivankov:
 * "Miracle Person" (奇跡の人)
 * "Queen" (女王)
 * "Okama King" (オカマ王)


 * Hack: "Hundredth Dan" (百段ハック)
 * Raise Max: "Legendary Gambler" (伝説のギャンブラー)

Alabasta

 * Pell: "The Falcon" (ハヤブサのペル)
 * Chaka: "The Jackal" (ジャッカルのチャカ)

Sky Island Residents

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

God's Army

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

Water 7

 * Kaku: "Mountain Wind" (山風)
 * Mozu and Kiwi: "Square Sisters" (スクエアシスターズ)

Thriller Bark

 * Perona: "Ghost Princess" (ゴーストプリンセス)
 * Absalom: "of the Graveyard" (墓場のアブサロム)
 * Oars:
 * "The Devil" (魔人)
 * "The Continent-Puller" (国引き)


 * Jigoro: "of the Wind" (風のジゴロウ)

Ryugu Kingdom

 * Neptune:
 * "God of the Sea" (海神)
 * "Great Knight of the Sea" (海の大騎士)


 * Shirahoshi: "Mermaid Princess" (人魚姫)
 * Hatchan: "Six-Sword Style" (六刀流のハチ)

Punk Hazard

 * Brownbeard: "Boss" (ボス)
 * Yeti Cool Brothers: "Killers of the Snowy Mountain" (雪山の殺し屋)
 * Smooge: "Rebar" (鉄筋のスムージ)
 * Chappe: "Rope-Tugging" (綱引きのチャッペ)
 * Run: "Machete" (マチェーテのルン)
 * Fen Bock: "of the Gourd" (瓢箪フェン・ボック)

Dressrosa

 * Rebecca:
 * "The Undefeated Woman" (無敗の女)
 * "The Phantom Princess" (幻の王女)


 * Riku Dold III: "King of Miracles" (奇跡の王)
 * Fighting Bull: "Brutal Bull" (非情なる牛（ブルータルブル）)

Gran Tesoro

 * Gild Tesoro:
 * "Gold Emperor" (黄金帝)
 * "Monster of the New World" (新世界の怪物)


 * Carina: "Thief-Girl"

Zou

 * Inuarashi:
 * "Duke" (イヌアラシ公爵)
 * "Ruler of Day" (日の王)
 * Nekomamushi:
 * "Master" (ネコマムシの旦那)
 * "Ruler of Night" (夜の王)
 * Sicilian: "Full Power" (全力のシシリアン)
 * Pedro: "of the Treetops" (木の上のペドロ)

Wano Country

 * Ryuma: "Ryuma de King" (リューマ・ド・キング)
 * Kin'emon: "Foxfire" (狐火の錦えもん)
 * Kanjuro: "Evening Shower" (夕立ち カン十郎)
 * Raizo: "of the Mist" (霧の雷ぞう)

Germa Kingdom
Note: For Sanji, refer to the Straw Hat Pirates above.
 * Vinsmoke Judge: "Garuda" (怪鳥 (ガルーダ))
 * Vinsmoke Reiju: "Poison Pink" (ポイズンピンク)
 * Vinsmoke Ichiji: "Sparking Red" (スパーキングレッド)
 * Vinsmoke Niji: "Electric Blue" (デンゲキブルー)
 * Vinsmoke Yonji: "Winch Green" (ウインチグリーン)

Black Drum Kingdom

 * Wapol: "Tin-Plate" (ブリキのワポル)
 * Kinderella: "Miss Universe" (ミス・ユニバース)

Others

 * Kureha:
 * "Witch" (魔女)
 * "Doctorine" (ドクトリーヌ)


 * Montblanc Noland: "Liar" (うそつき)
 * Baskerville: "Three-headed" (三つ首のバスカビル)
 * Elizabello II: "Fighting King" (戦う王)

Underworld

 * Duval: "Iron Mask" (鉄仮面のデュバル)
 * Du Feld: "The God of Fortune" (福の神)
 * Morgans: "Big News" (ビッグニュース)
 * Giberson: "The Concealer" (隠匿師)
 * Umit: "Deep Ocean Current" (深層海流)
 * Carmel:
 * "Mother Carmel" (マザー・カルメル)
 * "Holy Mother" (聖母)
 * "Mountain Witch" (山姥)

Other Epithets

 * Morgan: "Axe-Hand" (斧手のモーガン)
 * Jean Ango: "The Bandit" (追剥のジャン)
 * Chinjao: "The Drill" (錐のチンジャオ)

Filler Only

 * Pete: "Two-Pistol" (二丁拳銃)
 * Riley Brothers: "Police-Killer" (警官殺し)
 * Eric Dow: "King" (キング)
 * Carmen: "Fiery" (炎のカルメン)
 * Dick: "The Mountain Whale" (山鯨のディック)
 * Woonan: "Great Gold Pirate" (黄金の大海賊)
 * Danny, Denny, and Donny: "Hyena Three" (ハイエナ三人衆)
 * Billy: "the Orca Killer" (鯱殺しのビリー)
 * Gally: "of the Crescent-Moon" (三日月のギャリー)
 * Shutai: "The Lizard" (トカゲのシュウタイ)
 * Daddy Masterson: "The Father" (子連れのダディ)
 * Eric: "The Whirlwind" (旋風のエリック)
 * Heaby: "The Poisonous Snake" (毒蛇のヘビー)
 * Hotdog: "The Mad Dog" (狂犬のドッグ)
 * Gasparde: "General" (将軍)
 * Bigalo: "The Hanged Man" (縛り首のビガロ)
 * Shuraiya Bascùd: "Pirate Executioner" (海賊処刑人)
 * Toma: "Light-speed Swordsman" (光速の剣士)
 * Bismarck: "Steel Knight" (鋼鉄の騎士)
 * Puzzle: "Phoenix" (不死鳥のパズール)
 * Lily Enstomach: "Glutton" (悪食リリー)
 * Patrick Redfield:
 * "Red Baron" (赤の伯爵)
 * "Isolating" (孤高のレッド)
 * Byrnndi World: "World Destroyer" (世界の破壊者)

Simon Pirates

 * Simon: "the Supernatural" (神懸りのサイモン)
 * Din: "Blue-winged" (青い翼のディン)
 * Zabal: "Crimson" (紅蓮のザバル)
 * Gad: "The Whirling Tide" (渦潮のガド)
 * Niphtal: "Dreaming" (夢見のニフタル)

Neo Marines

 * Z "Black Arm" (黒腕のゼファー)
 * Alpacacino: "Beast Cannon" (獣砲)

Aliases and Code Names
Unlike epithets, which were created to identify individuals and spread their fame (or infamy), aliases and code names were made to hide their identities. Aliases can also be shared by many people, with the title being passed from one person to another.

Straw Hat Pirates

 * Monkey D. Luffy
 * "Lucy" (ルーシー) - Used as an alias to hide his identities while participants in the Corrida Colosseum.
 * "Luffyland" (ルフィランド) - Used to gain the support and friendship of the Tontatta Kingdom.
 * Luffy-tarou (ルフィ太郎) - Used as an alias while in Wano Country.
 * Luffy-no-Umi (ルフィの海) - Used during his sumo match against Urashima.
 * Roronoa Zoro
 * "Zoroland" (ゾロランド) - Used to gain the support and friendship of the Tontatta Kingdom.
 * "Zoro-juurou" (ゾロ十郎) - Used as an alias while in Wano Country.
 * Nami
 * "Namizo" (ナミゾウ) - Used to avoid Lola's jealousy filled attack.
 * "Namiland" (ナミランド) - Used to gain the support and friendship of the Tontatta Kingdom. It was assigned to her by Usopp, but was never used.
 * Usopp
 * "Sogeking" (そげキング) - Used as an alias to hide his identity from his own crew during the Water 7 Saga.
 * "Usoland" (ウソランド) - Used to gain the support and friendship of the Tontatta Kingdom.
 * "Usohachi" (ウソ八) - Used as an alias while in Wano Country.
 * Sanji
 * "Mr. Prince" (Mr. プリンス) - Used as an alias to hide from Baroque Works.
 * "Sanland" (サンランド) - Used to gain the support and friendship of the Tontatta Kingdom. It was assigned to him by Usopp, but was never used.
 * Tony Tony Chopper
 * "Chopper Man" (チョッパーマン) - Used as a make believe superhero identity.
 * "Choppeland" (チョパランド) - Used to gain the support and friendship of the Tontatta Kingdom. It was assigned to him by Usopp, but was never used.
 * "Choniki" (チョニキ) - Used to hide Carrot being replaced by a look alike frog. In Japanese, the name sounds like a frog's croak.
 * Nico Robin
 * "Robinland" (ロビランド) - Used to gain the support and friendship of the Tontatta Kingdom.
 * "O-Robi" (おロビ) - Used as an alias while in Wano Country.
 * Franky
 * "Fraland" (フラランド) - Used to gain the support and friendship of the Tontatta Kingdom.
 * "Franosuke" (フラの介) - Used as an alias while in Wano Country.
 * Brook
 * "Deamon King Satan-sama" (悪魔王サタン様) - Used by the people of Namakura Island.
 * "Boneland" (ホネランド) - Used to gain the support and friendship of the Tontatta Kingdom. It was assigned to him by Usopp, but was never used.

Baroque Works

 * "Mr. 0" (Misutā Zero): Crocodile - Used to hide his affiliation with the organization.
 * "Miss All Sunday" (ミス・オールサンデー): Nico Robin - Used while the organization was active.
 * "Mr. 1" (ミスター・ワン): Daz Bones - Used while the organization was active.
 * "Miss Doublefinger" (ミス・ダブルフィンガー): Paula - Used while the organization was active.
 * "Mr. 2 Bon Kurei" (Mr.2・ボン・クレー): Bentham - Used while the organization was active.
 * "Mr. 3" (ミスター・スリー): Galdino - Used while the organization was active.
 * "Miss Goldenweek" (ミス・ゴールデンウィーク): Miss Goldenweek - Used by an officer agent while the organization was active.
 * "Mr. 4" (ミスター・フォー): Mr. 4 - Used by an officer agent while the organization was active.
 * "Miss Merry Christmas" (ミス・メリークリスマス): Miss Merry Christmas - Used by an officer agent while the organization was active.
 * "Mr. 5" (ミスター・ファイブ): Mr. 5 - Used by an officer agent while the organization was active.
 * "Miss Valentine" (ミス・バレンタイン): Miss Valentine - Used by an officer agent while the organization was active.
 * "Mr. 6" (ミスター・シックス): Mr. 6 - Used by a frontier agent while the organization was active.
 * "Miss Mother's Day" (ミス・マザーズデー): Miss Mother's Day - Used by a frontier agent while the organization was active.
 * "Mr. 7" (ミスター・セブン): Used by two frontier agents, at different times, while the organization was active.
 * "Miss Father's Day" (ミス・ファーザーズデー): Miss Father's Day - Used by a frontier agent while the organization was active.
 * Igaram
 * "Mr. 8" (ミスター・エイト) - Used as an alias while infiltrating the organization.
 * "Igarappoi" (イガラッポイ) - Used to hide his affiliation with the organization.
 * "Miss Monday" (ミス・マンデー): Miss Monday - Used by a frontier agent while the organization was active.
 * "Mr. 9" (ミスター・ナイン): Mr. 9 - Used by a frontier agent while the organization was active.
 * "Miss Wednesday" (ミス・ウェンズデー): Nefertari Vivi - Used as an alias while infiltrating the organization.
 * "Mr. 10" (ミスター・テン): Mr. 10 - Used by a frontier agent while the organization was active.
 * "Miss Tuesday" (ミス・テューズデー): Miss Tuesday - Used by a frontier agent while the organization was active.
 * "Mr. 11" (ミスター・イレブン): Mr. 11 - Used by a frontier agent while the organization was active.
 * "Miss Thursday" (ミス・サースデー): Miss Thursday - Used by a frontier agent while the organization was active.
 * "Mr. 12" (ミスター・トゥエルブ): Mr. 12 - Used by a frontier agent while the organization was active.
 * "Miss Saturday" (ミス・サタデー): Miss Saturday - Used by a frontier agent while the organization was active.
 * Unluckies
 * "Mr. 13" (ミスター・サーティーン): Used by an otter frontier agent while the organization was active.
 * "Miss Friday" (ミス・フライデー): Used by a vulture frontier agent while the organization was active.
 * "Mr. Mellow" (ミスター・メロウ): Mr. Mellow - Used by a billion while the organization was active.
 * "Mr. Love" (ミスター・ラブ): Mr. Love - Used by a billion while the organization was active.
 * "Mr. Shimizu" (ミスター・シミズ): Mr. Shimizu - Used by a million while the organization was active.
 * "Miss Catherina" (ミス・キャサリーナ): Miss Catherina - Used by a million while the organization was active.
 * "Mr. Beans" (ミスター・ビーンズ): Mr. Beans - Used by a million while the organization was active.

Donquixote Pirates

 * "Joker" (ジョーカー): Donquixote Doflamingo - Used as an alias to hide his identity as the Underworld boss.
 * "Corazon" (コラソン): Vergo (former) and Donquixote Rosinante - Codename assigned to Doflamingo's right-hand man.
 * "Violet" (ヴァイオレット): Viola - Codename while a member of the Donquixote Family.
 * "Baby 5" (ベビー5): Baby 5 - Alias used by one of the members of the Pica Army.
 * "Buffalo" (バッファロー): Buffalo - Alias used by one of the members of the Pica Army.

Toys

 * "Thunder Soldier of Rage" (怒りの雷兵): Kyros - Used during his time as a toy.
 * Onepoco (ワンポコ): Milo - Used during his time as a toy.

Underworld

 * Caesar Clown
 * "Caedar" (シーダー): - Used as an alias to hide his identity while on Zou.
 * "'Gangster' Gastino" (“ギャングスター”ガスティーノ): - Used as an alias to hide his identity from the Straw Hats when they later met with Bege.
 * "Mountain Witch" (山姥): Carmel - Used as an alias to hide her true identity in the Underworld as an orphans dealer.
 * "Queen of the Pleasure District" (歓楽街の女王): Stussy - Used as an alias to hide her true affiliation with CP-0 in the Underworld.

Others

 * "Klahadore" (クラハドール): Kuro - Used as an alias to hide his identity while living in Syrup Village.
 * "Poseidon" (ポセイドン): Shirahoshi - The alias given to one of the Ancient Weapons; the true identity being the rare Mermaid Princesses capable of controlling the Sea Kings.
 * "Absa" (アブサ): Absalom - Used as an alias for his freelance writer and reporter job.
 * "Lucy" (ルーシー): Sabo - Used as an alias to hide his identities while participants in the Corrida Colosseum.
 * "Nazoms" (ナゾムズ): Pekoms - Used in a poor attempt to hide his betrayal from the Big Mom Pirates.
 * "Connie" (コニー): Jewelry Bonney - Used during her infiltration to Mary Geoise.

Manga and Anime Influences

 * Epithets were used by pirates in the real world to hide their identities often in order to protect relatives, friends, and contacts from their government's persecution.
 * Eustass Kid's epithet, "Captain", was also the epithet of the real life pirate whom he is based on, Captain Kidd.

Translation and Dub Issues

 * Kuro's epithet was changed to "Kuro of the Thousand Plans" in the English dubs.
 * Gin was called "Diablo" in the 4Kids dub, due to censorship to the epithet "Man-Demon". "Diablo" is Spanish for "Devil".
 * Carmen was called "Five-Alarm" in the 4Kids dub, for unknown reasons.
 * Smoker was referred to the "Smoke Hunter" in the 4Kids dub.
 * For Whitebeard, Blackbeard, Brownbeard, Mountain Beard, Waterfall Beard, and Pinkbeard, their aliases in Japanese are meant for their respective colored/stylized facial hair. In the Japanese language, there is no distinction between a beard and a mustache, and there is only one blanket term for facial hair (ひげ).

Trivia

 * Galley and Gally have the same epithet, that is "Crescent-Moon".
 * Enel and Usopp share the same epithet, "God".
 * Marco and Puzzle have the same epithet, that is "Phoenix".
 * Sanji's alias "Mr. Prince" from the Alabasta Arc is fitting as it is later revealed that Sanji had been born into the Vinsmoke Family, the Royal Family of the Germa Kingdom.

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