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Tyrant Shield Hero by MountainKing2401
Instead of summoning a college student with little to no combat experience, Melromarc summoned an infamous pirate captain as their Shield Hero. Armed with a legendary weapon and an innate distrust of any kind of government, how will this newcomer fare in a world where everyone hates him?
Crossover - One Piece & Rising of the Shield Hero/盾の勇者の成り上がり - Rated: M - English - Adventure/Fantasy - Chapters: 1 - Words: 1,111 - Favs: 2 - Follows: 3 - Published: 1h - OC, Raphtalia, Firo, Motoyasu K.
Rise of the Phoenix Queen by Perseus12 reviews
She's now the Mistress of Death, she leaves her old world and living on the new world. But she must fight once again, she won't stand seeing people suffering and she will break their chains as she is the Phoenix Queen. FemFutaHarry x Harem.
Crossover - Harry Potter & One Piece - Rated: M - English - Adventure/Romance - Chapters: 2 - Words: 1,055 - Reviews: 10 - Favs: 151 - Follows: 167 - Updated: 4h - Published: 5/2/2021 - Harry P., Vivi, Boa Hancock, Carrot
Serenity: Crossing Realms by MysticSkye8 reviews
Rena led a simple, boring, lonely life until one day she met a being from another world. A Guardian who protects the Realms, and she needs Rena's help to save everyone. She had always wanted to travel the world, but now, she is traveling between worlds. Who will she encounter along the way? Multiple crossovers: Fairy Tail. MHA, One Piece, and more.
Crossover - One Piece & My Hero Academia/僕のヒーローアカデミア - Rated: M - English - Adventure/Fantasy - Chapters: 99 - Words: 142,270 - Reviews: 2 - Favs: 34 - Follows: 39 - Updated: 5h - Published: 1/7 - Luffy, Keigo Takami/Hawks
Iron Fist Alexander in One piece by Quickben1 reviews
All vessels are destined to one day break. Alexander the Warrior Jar, passed away in peace comforted by the fact that he lived and died by his warrior creed. His friend, the new Elden lord whom he fought for the last time, gave him his blessings so that one day he'll rise again as the warrior he once was. Elden Ring X One Piece FanFic
Crossover - One Piece & Elden Ring - Rated: M - English - Adventure - Chapters: 15 - Words: 51,297 - Reviews: 5 - Favs: 12 - Follows: 20 - Updated: 8h - Published: 9/19
Devil's Dreamers by Mrotrax reviews
"Destiny. Fate. Dreams. So long as people cling onto these words? They shall not vanish." A new age of heroism begins when two children are lost at sea and wash ashore, befriending others like them and moving the change the world no matter what. Rated for Bakugo language. TVTROPES page underedo! FINAL REVISONS DONE!
Crossover - One Piece & My Hero Academia/僕のヒーローアカデミア - Rated: M - English - Chapters: 31 - Words: 126,872 - Reviews: 33 - Favs: 96 - Follows: 85 - Updated: 10h - Published: 2/5
DEATH the Mysterious Organization by Tre600 reviews
When a secret organization makes its move, Naruto of the Ninja World and Luffy of the Straw Hat Pirates, and their friends, must unite to take out this evil group. The longer they're together, the more the horrible truth of the relationship between the World Government and Ninja World becomes clearer and on top of that, the leader of this organization has met them all before..
Crossover - Naruto & One Piece - Rated: M - English - Adventure/Friendship - Chapters: 132 - Words: 417,636 - Reviews: 30 - Favs: 77 - Follows: 69 - Updated: 15h - Published: 11/11/2019
Mew's Most Excellent Adventure by Vebulus reviews
Mew get's pull through a dimensional portal one day, ending up on the same boat as Monkey D Luffy as he sets out on his adventure. The pair quickly bonding over their zest for life. The only result can be chaos. Skirts the border of crack.
Crossover - Pokémon & One Piece - Rated: T - English - Humor/Adventure - Chapters: 16 - Words: 29,522 - Reviews: 94 - Favs: 237 - Follows: 254 - Updated: 17h - Published: 3/3/2023 - Mew, Luffy
Unwavering Will in the Sea by dafid1 reviews
What if Frisk from Undertale went to the world of One Piece? See what happens as Frisk goes on a new adventure!
Crossover - One Piece & Undertale - Rated: K+ - English - Adventure/Friendship - Chapters: 92 - Words: 166,151 - Reviews: 113 - Favs: 314 - Follows: 328 - Updated: 9/26 - Published: 11/28/2020 - Luffy, Frisk
Heart of a Pirate by Paintball-Gamer reviews
The Straw Hat Pirates show up at Destiny Islands from Skypiea and meet Sora and his friends. But when the Heartless invade, they are all separated. Now Luffy and Sora must join forces to find their friends, and defeat the darkness. KH/One Piece crossover. Cover image by Kiyomisa on Deviantart.
Crossover - Kingdom Hearts & One Piece - Rated: T - English - Adventure/Friendship - Chapters: 16 - Words: 148,715 - Reviews: 219 - Favs: 258 - Follows: 248 - Updated: 9/26 - Published: 9/17/2008 - Luffy, Sora
Sands of Freedom by SilverSoulmmc reviews
The Straw Hat Pirates are blasted into another adventure, this time through the periling world of Sand Land! In a desolate land filled with storming politics, demons, angels, and monsters as far as the eye can see; will this pirate crew be able to help their new friends overcome it all? "It's not my problem? Of course, it is! We're friends, aren't we!"
Crossover - Anime X-overs & One Piece - Rated: T - English - Friendship/Adventure - Chapters: 7 - Words: 29,718 - Reviews: 14 - Favs: 37 - Follows: 34 - Updated: 9/26 - Published: 6/1 - Luffy, Nami
Father of Monsters by NeonZangetsu reviews
What is a monster? We use the term so often nowadays, in so many ways, it's long since lost any meaning. At their core, Monsters are that which evoke horror, and horror is the violation of that which is 'normal'. They are rejected by society, hated, abandoned. How could I hate a child for wanting to be more than 'normal? I refuse! Narutoxharem. Surprising pairing. Read and see!
Crossover - Naruto & One Piece - Rated: T - English - Romance/Adventure - Chapters: 6 - Words: 59,790 - Reviews: 1154 - Favs: 2,018 - Follows: 2,133 - Updated: 9/26 - Published: 7/14/2023 - Naruto U., Bellemere, Olvia, Big Mom/Charlotte Linlin
Omni-Piece by The True Writer. Zerthin reviews
A Ben 10/One Piece crossover; I woke up this morning with this on my mind, and I had to share it with you all! I hope you enjoy. It's going to be a task I hope you'll enjoy. [Bonus: Ben will have the Ultimatrix (Well an O.C version called the M-Model; He also has the Haki's; all three. but he'll have to get training to access them full time)]
Crossover - One Piece & Ben 10 - Rated: K - English - Adventure/Fantasy - Chapters: 38 - Words: 61,412 - Reviews: 179 - Favs: 198 - Follows: 187 - Updated: 9/26 - Published: 12/22/2019 - Luffy, Zoro, Sanji, Ben T.
Heroes of the New World by Zaru reviews
A Crossover Story between Zaru and Juubi-k. As Yamato, Son of Kaido, heals from her wounds from a battle against her tyrannical father, a chance meeting with a injured boy in green opens her world. And that world, will change. The boy's name? Midoriya Izuku. For Questions, refer to FAQ in story(after Chapter 15)
Crossover - One Piece & My Hero Academia/僕のヒーローアカデミア - Rated: M - English - Adventure - Chapters: 73 - Words: 473,160 - Reviews: 1455 - Favs: 2,309 - Follows: 2,501 - Updated: 9/25 - Published: 6/11/2022 - Yamato, Izuku M.
One War by Ying-Yang-Ding-Dang reviews
A month after the surrender of the Empire of Japan the American first fleet commanded by Scott Duncan Hazard was ordered to return home to San Francisco and fate says otherwise and sends them to the unknown To the world of one piece where democracy isn't present, freedom shall reign as the land of the free, frees the world Mostly WW2 x One piece with battlefield elements
Crossover - One Piece & Battlefield - Rated: T - English - Supernatural/Fantasy - Chapters: 2 - Words: 8,152 - Reviews: 10 - Favs: 10 - Follows: 10 - Updated: 9/25 - Published: 9/17 - Smoker, Tashigi, Akainu/Sakazuki, Strawhat Pirates
One Piece and Bobobo-bo Bo-bobo Crossover Fanfiction by FanaticCosmos reviews
In this crossover story, the wacky world of Bobobo collides with the adventurous universe of One Piece. Monkey D. Luffy and his crew will meet Bobobo and his team of hair warriors. Together, they must navigate through the zany hair-based obstacles and defeat the evil Hair Hunters. Prepare for some hilarious antics, over-the-top battles, and plenty of hair-raising moments.
Crossover - One Piece & Bobobo-bo Bo-bobo - Rated: T - English - Humor/Adventure - Chapters: 2 - Words: 3,068 - Reviews: 2 - Favs: 9 - Follows: 10 - Updated: 9/25 - Published: 3/23/2023 - Luffy, Zoro, Bobobo-bo Bo-bobo, Don Patch
Milenio Vacío II: Viejo Mundo by Sun Dancer 0880 reviews
Una serie de eventos ocasiona que All Might decida aprovechar la llegada de unos piratas del pasado para realizar un viaje hacia las ruinas de la Gran Linea.El joven grupo de héroes involucrados se entera de sus planes decidiendo traerlo contra su voluntad quedando a merced del tempestuoso mar, obligándose a cooperar con los piratas, descubriendo así en el camino...Un mundo perdido
Crossover - One Piece & My Hero Academia/僕のヒーローアカデミア - Rated: K+ - Spanish - Adventure/Friendship - Chapters: 86 - Words: 605,760 - Reviews: 93 - Favs: 41 - Follows: 38 - Updated: 9/24 - Published: 2/1/2023 - Luffy, Strawhat Pirates, Toshinori Y./All Might, 1-A Students
DELTA: Rise of Shul Shagana by MangaToons reviews
Reboot of The Delta Saga: Team Natsu, Happiness Charge/Tropical Rouge Precure, students from Academy City, and Symphogear users wound up stuck in a world of pirates. They have to rely on the Straw Hat pirates and an young boy labeled as the Ultimate Plague.
Crossover - One Piece & Senki Zesshō Symphogear/戦姫絶唱シンフォギア - Rated: T - English - Adventure/Humor - Chapters: 60 - Words: 384,494 - Reviews: 182 - Favs: 165 - Follows: 146 - Updated: 9/23 - Published: 10/30/2015 - Luffy, OC, Shirabe T.
Journey of the Frozen by gorum141 reviews
When a powerful figure from with a past, Gorum, the wielder of the mythical devil fruit, crosses paths with the Straw Hat Pirates, a new chapter in their adventure begins. Gorum's ancient powers of ice and storm bring both protection and destruction as he struggles with his past, his connection to ancient legends, and his deep loyalty to an old friend.
Crossover - One Piece & League of Legends - Rated: M - English - Adventure/Spiritual - Chapters: 1 - Words: 1,550 - Reviews: 1 - Favs: 1 - Follows: 1 - Published: 9/23
Blindfold and Flower by Sei RedFox
Mage muda yang mendapatkan undangan menghadiri acara konferensi sejarah di menara sihir dan menjalin kedekatan dengan arkeolog pengisi acara tersebut. Nico Robin (One Piece) X Takius (Ragnarok the Animation) crossover
Crossover - One Piece & Ragnarok - Rated: T - Indonesian - Romance/Drama - Chapters: 10 - Words: 13,003 - Updated: 9/23 - Published: 7/16 - Robin
The Ultimate Worst Generation: Databook by stringdog reviews
This is a supplemental companion to my story 'The Ultimate Worst Generation' modeled in part after the One Piece Databooks. It will provide a little more information on the various new characters added from the 5 crossover series and can serve as a reference for those who want it. The added series are Fairy Tail, My Hero Academia, Black Clover, Akame ga Kill, and RWBY.
Crossover - One Piece & Fairy Tail - Rated: T - English - Chapters: 25 - Words: 21,246 - Reviews: 5 - Favs: 39 - Follows: 43 - Updated: 9/22 - Published: 12/2/2023
The Ultimate Worst Generation by stringdog reviews
The Straw Hats have arrived on their final stop before descending to Fish-man Island and onto the New World, the Sabaody Archipelago. However, they're not the only big name rookies present, they are just one of 14 rookie crews present and the other 13 all have big names as well. Mass deep crossover with Fairy Tail, My Hero Academia, Black Clover, Akame ga Kill, and RWBY.
Crossover - One Piece & Fairy Tail - Rated: M - English - Adventure - Chapters: 25 - Words: 338,574 - Reviews: 134 - Favs: 167 - Follows: 176 - Updated: 9/22 - Published: 10/15/2023 - Luffy, Strawhat Pirates
Naruto: Reborn as Zoro by creampuffs69 reviews
Penniless man died and reincarnated in the world of Naruto. But he becomes Roronoa Zoro from One Piece instead. Living his new life in the dangerous world with his swordsmanship talent. How will his life goes? Read chapters ahead in p@treon
Crossover - Naruto & One Piece - Rated: K - English - Adventure - Chapters: 56 - Words: 89,143 - Reviews: 42 - Favs: 192 - Follows: 215 - Updated: 9/22 - Published: 5/21 - Zoro
Justice for the land of the Samurai by leonardo18anime reviews
After escaping from the Big Mom pirates,the Sanji rescue team end up crossing some mysterious fog where they are teleported to the DC Universe. Now Luffy and the crew have to try make an alliance with the Justice League in order to help the situation at Wano and defeat Kaifo once and for all.
Crossover - DC Superheroes & One Piece - Rated: T - English - Humor/Adventure - Chapters: 47 - Words: 196,906 - Reviews: 365 - Favs: 430 - Follows: 424 - Updated: 9/22 - Published: 1/11/2020 - Luffy, C. Kent/Kal-El/Superman, B. Wayne/Batman, Princess Diana/Wonder Woman
Straw Hats Vigilantes by leonardo18anime reviews
After sailing for some new waters around the New World, the Straw Hats pirates find themselves stuck in a new modern world full of technology and super power individuals all calling themselves heroes .Now while stuck they have to do some things not heroics to get back to their world.
Crossover - One Piece & My Hero Academia/僕のヒーローアカデミア - Rated: T - English - Friendship/Adventure - Chapters: 105 - Words: 328,831 - Reviews: 1281 - Favs: 1,602 - Follows: 1,652 - Updated: 9/22 - Published: 7/12/2019 - Luffy, Strawhat Pirates, Izuku M., 1-A Students
One Piece x MHA X DXD by leonardo18anime reviews
A mash-up crossover. Izuku Midoriya is a boy who thought he was a weak teen who would never be a hero, that would change when he meet the beautiful Rias Gremory who turned him into a devil and tries to help him become a hero. While this happens a bunch of people from another world shows up at his city, where he meet them and especially a boy with Straw Hat with power equal to Gods.
Crossover - One Piece & High School DxD/ハイスクールD×D - Rated: M - English - Friendship/Hurt/Comfort - Chapters: 4 - Words: 6,483 - Reviews: 17 - Favs: 61 - Follows: 72 - Updated: 9/22 - Published: 7/23/2023 - Luffy, Rias G., OC, Sirzechs L.
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