Lists about the most compelling fan theories in One Piece, as well as astute fan observations about various things from the One Piece community that might just blow your mind. 

One Piece Fan Theories!

Anime Underground

One Piece&nbsp;has been airing since 1999, and the manga&nbsp;has been in print since&nbsp;1997. This means that fans have had plenty of time to come up with theories about the series. While some theories turned out to be correct, others were debunked. Some would have been cool if they&#39;d happened, while others easily qualify as some of the dumbest&nbsp;One Piece&nbsp;theories&nbsp;out there.&nbsp;

Let&#39;s take a look at some of these <a href="https://www.ranker.com/list/crazy-one-piece-fan-theories/anna-lindwasser" target="_blank">crazy&nbsp;One Piece&nbsp;theories</a> - and at some that are actually pretty awesome. Fans had a lot of opinions about characters who might have joined the <a class="edS-cl" href="https://www.ranker.com/list/one-piece-characters-who-should-join-the-straw-hats/anna-lindwasser?ref=internalCrossLinking_keyword">Straw Hat crew</a>. Rebecca might have made a good addition, but Caesar Clown? Not so much. Also, did you know that people used to think that Kaido was a Poneglyph that ate a <a href="https://www.ranker.com/list/strongest-devil-fruit/ashley-glenn" target="_blank">Devil Fruit</a>?

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13 Popular 'One Piece' Fan Theories That Ended Up Being Totally Wrong

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13 Popular 'One Piece' Fan Theories That Were Completely Debunked

Marcus Jackson

Anime Characters

Marshall D. Teach, AKA Blackbeard, is one of the most formidable <a target="_blank" rel="noopener noreferrer" href="https://www.ranker.com/list/best-one-piece-villains/ranker-anime">villains in One Piece</a>, yet fans still don't know much about him. The series only revealed that he was orphaned and accepted into Whitebeard's crew at age 12, but nothing about his childhood before that. Fans are aware that he wields two <a target="_blank" rel="noopener noreferrer" href="https://www.ranker.com/list/strongest-devil-fruit/ashley-glenn">Devil Fruit powers</a>, but the mystery still remains of how he was able to steal Whitebeard's Devil Fruit without his body being torn apart.Luckily, many One Piece fans have come up with some very <a target="_blank" rel="noopener noreferrer" href="https://www.ranker.com/list/crazy-one-piece-fan-theories/anna-lindwasser">impressive and plausible theories</a> on the notorious pirate. Some theories explain how and why he's able to consume two Devil Fruits, while others theorize what his future motives might be. One thing is for sure - these theories will definitely have your head spinning.Here's a list of impressive fan theories about the double-wielding Devil Fruit user, Blackbeard. Do you think any of these scenarios are likely?

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Mind-Blowing Fan Theories That Might Explain Blackbeard’s Mysterious Powers In 'One Piece'

14 Mind-Blowing Fan Theories About Blackbeard In 'One Piece'

Sarah Chen

Pop Culture

There are many <a target="_blank" rel="noopener noreferrer" href="https://www.ranker.com/list/all-best-one-piece-characters/ranker-anime">fascinating characters</a> in the vast world of One Piece, but only a select few are still shrouded in mystery. One of those characters is the infamous Red-Haired Shanks. Over 25 years have passed since fans were introduced to the crimson-haired emperor, but very little was revealed about him. His existence brought up more questions than answers, and there's still a lot that fans <a target="_blank" rel="noopener noreferrer" href="https://www.ranker.com/list/things-you-didnt-know-about-shanks-one-piece/anna-lindwasser">don't know</a> about the enigmatic pirate.What are his true motives? Is he actually the enemy? What are his origins? These are only a few of the many questions that still haven't been answered, but that's never stopped OP fans from coming up with <a target="_blank" rel="noopener noreferrer" href="https://www.ranker.com/list/crazy-one-piece-fan-theories/anna-lindwasser">wild theories</a> to address the endless amount of questions surrounding Shanks.&nbsp;Here's a list of the best fan theories about Shanks. Which theories do you agree with the most? Vote for the ones you think make the most sense!

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9 Mind-Blowing 'One Piece' Fan Theories About Shanks And His True Motives

9 Intriguing 'One Piece' Fan Theories About Shanks That Might Actually Be True

Keith Murphy

Lists about the manga and anime starring middle-schooler Usagi Tsukino and her friends, the Sailor Soldiers, as they defend the planet from evil villains.

Sailor Moon

Sailor Moon has captivated fans since its debut in the early '90s. Though the show's creators no longer release new episodes, devout fans of this old-school anime continue to develop new Sailor Moon fan theories that fill in plot holes, answer lingering questions, and add nuance to the story. Some of these hypotheses are surprisingly convincing. Fans believe they understand why no one recognizes the Sailor Scouts once they don their heroic garb, while others speculate about who protects the Sun.Certain conjectures seem a little less plausible - such as the theory that Sailor Moon is an offshoot of She-Ra - but even the weirder ideas are still worthy of consideration.

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Mind-Blowing 'Sailor Moon' Fan Theories That Make Too Much Sense

The 11 Most Convincing 'Sailor Moon' Fan Theories That Might Actually Be True

Rowan Blake

Our collection of lists investigating the unexplained mysteries of Naruto, as well as some brilliant fan theories that caused us to look at the show in a whole new light!

Naruto Theories and Mysteries

Entertainment

Back when&nbsp;Naruto&nbsp;was first coming out, fans had tons of theories about the mysteries behind the characters and story. While some theories turned out to be correct, others were thoroughly disproven. But that doesn't mean that we have to forget about them! For this list, we're celebrating&nbsp;Naruto fan theories that got debunked. Some are silly, but some are just as good as what actually happened in the series - maybe even better, depending on who you ask.Many of these theories center around Tobi's true identity. Though some correctly suspected that he was Obito, others thought he might be Izuna, Future Sasuke, or even Teuchi from Ichiraku Ramen. Other theories involved the Uzumaki Clan, like the idea that the Rinnegan was the clan's kekkai genkai to the prediction that Karin and Naruto would make Uzumaki babies. Then there was the legendary Tengu Theory, which unfortunately isn't available online anymore, but offered a fascinating take on <a target="_blank" rel="noopener noreferrer" href="https://www.ranker.com/list/things-you-didnt-know-about-uchiha-clan-naruto/anna-lindwasser?ref=internalCrossLinking_keyword">the Uchiha clan</a>'s origins.&nbsp;Do you wish that any of these theories were true?

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These 13 'Naruto' Fan Theories Had Everyone Convinced - Until They Were Proven Wrong

13 Popular 'Naruto' Fan Theories That Were Completely Debunked

Rankings and lists about films and characters from the studio that brought you mindblowing animation from A Bug's Life to Wall-E, to infinity and beyond.

All Things Pixar

Just a few mind-blowing and potentially life-changing fan theories to consider while thinking about your favorite TV shows, films, franchises, and universes. 

Pop Culture Fan Theories

Lists of fascinating, far-fetched, and possibly true fan theories about shows and movies that were made (let's face it) for children. 

Adults Ruin Everything

Fan theories and deep thoughts about Disney films, characters, and universes.

Deconstructing Disney

Pixar (Studio)

If you&rsquo;re into Pixar theories, you&rsquo;ll mightily enjoy this list and have some fun tidbits&nbsp;for the next trivia throw down. Be warned, though &mdash;&nbsp;sure, some of these Pixar fan theories are fun and circuitous, but others can get pretty dark. 
&nbsp; 
For instance, the theory about the witch from Brave being Boo from Monsters, Inc. is only part of one major theory. The fact that Boo the witch is leaving Easter eggs behind in <a class="edS-cl" href="https://www.ranker.com/crowdranked-list/pixar-films-ranked?ref=internalCrossLinking_keyword">all of the Pixar movies</a> as she searches for Mike is&nbsp;mind blowing. This all ties into Jon Negroni&rsquo;s super Pixar fan theory that every Pixar movie since Toy Story takes place in the same universe. He even wrote a book about it. 
&nbsp; 
After you discover all of these prominent Pixar movie theories, you&rsquo;ll be connecting all the dots yourself. And looking for Boo, who is looking for Sulley.

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Pixar Fan Theories That Will Make You See Your Favorite Movies In A Whole New Light

Top 10 SHOCKING Pixar Fan Theories

20 Pixar Movie Theories, Ranked By Super Fans

Leah Collins

Lists about the manga and anime series, in which humanity live in walled cities to protect themselves against the enormous, remorseless, human-hungry Titans.

Attack on Titan

With so many wild plot twists that have turned fans' understanding of the series on its head, it's no surprise that people have been coming up with Attack on Titan fan theories since the series' debut. While some old Attack on Titan theories were spot-on, others didn't really pan out.The manga and anime have ended, so it's a great time to look back on some of the bizarre and creative theories that didn't stand the test of time. Some of these easily qualify as the wildest Attack on Titan fan theories out there, but in some cases, they seem just as awesome or even better than what really happened.

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13 'Attack On Titan' Fan Theories That Sounded Convincing - Until They Were Debunked

13 Popular 'Attack On Titan' Fan Theories That Were Totally Debunked

Lists about all the versions of DC Comics's Batman to make it to the big screen, including Burton, Nolan, DCEU, and Lego adaptations.

Batman on the Big Screen

Riddler (Character)

DC has become one of the largest superhero&nbsp;franchises in history.&nbsp;With&nbsp;so much source material to pull from and countless interesting characters,&nbsp;there's no question as to why.&nbsp;From unanswered questions&nbsp;to character quirks,&nbsp;some passionate fans managed to come up with&nbsp;some interesting&nbsp;theories surrounding one of Batman's most interesting foes - <a href="https://www.ranker.com/list/proof-the-riddler-is-batmans-greatest-nemesis/erik-barnes">The Riddler</a>. With Jim Carey's iconic portrayal in Batman Forever, to Paul Dano's more deranged approach in The Batman, The Riddler has always been a fan favorite.Check out these <a href="https://www.ranker.com/list/things-you-didnt-know-about-the-riddler/shane-fraser">Riddler</a> fan theories&nbsp;below, and don't forget to vote!

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The Riddler Fan Theories That Could Change The Batman Universe

The Riddler Theories That Connect The Clues For Batman Fans

Davis Williams

Lists about Interplay Entertainment's post-nuclear-war-apocalyptic RPG series set in the 22nd and 23rd centuries—and the TV adaptation, now playing on Amazon Prime.

Surviving the Fallout

Explore the complex worlds of video games with fans who have dissected, analyzed, and theorized about every little pixel.

Game Theories

Watchworthy

The Fallout franchise is undeniably one of the <a class="edS-cl" href="https://www.ranker.com/list/most-popular-video-games-today/ranker-games?ref=internalCrossLinking_keyword">most popular video game</a> franchises of all time, with multiple games that could all be considered one of the <a class="edS-cl" href="https://www.ranker.com/crowdranked-list/the-best-games-of-all-time?ref=internalCrossLinking_keyword">best games ever</a> made. Fans flock to buy the latest releases, thanks to the games' huge open worlds filled with all types of intriguing factions, <a target="_blank" rel="noopener noreferrer" href="https://www.ranker.com/list/fallout-characters-and-companions/loganrapp">bizarre characters</a>, and fascinating plots. Of course, having these large maps, wacky characters, and mysterious worlds provide plenty of opportunity for fans to speculate and come up with some wild Fallout fan theories.From unsettling secrets about Vault-Tec's experiments that hint at sinister agendas to strange occurrences in the wasteland that suggest supernatural forces at play, these Fallout theories breathe new life into the shadows of Fallout's world. As players navigate through radiation-soaked ruins and confront bizarre anomalies, these creepy Fallout fan theories will keep you on edge, revealing that in this world, everything may not be as it appears

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Mind-Blowing Fallout Fan Theories That Make The Wasteland Even Creepier

The 14 Creepiest Fallout Fan Theories

Kyle Townsend

M. Night Shyamalan

Love them or hate them, M. Night Shyamalan&nbsp;movies have a tendency to stick with you long after leaving the theater, as your mind attempts to unravel all the symbolism and intricate details they contain. But a group of Reddit fans&nbsp;went even deeper into <a target="_blank" rel="noopener noreferrer" href="https://www.ranker.com/list/foreshadowing-from-m-night-shyamalan-movies/jordan-breeding">the Shyamalan universe</a>,&nbsp;diving into a rabbit hole of fan theories that could change everything.&nbsp;These Shyamalan&nbsp;fan theories&nbsp;place films like Split, Unbreakable, Glass, and The Village in a whole new light.From The Sixth Sense to After Earth, you'll get a look at some of the wildest and most brilliant M. Night Shyamalan fan theories ever to hit the internet. Vote up the theory that sounds&nbsp;the most probable.

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M. Night Shyamalan Fan Theories That Are Even Better Than The Movies' Big Twists

Fan Theories About M. Night Shyamalan Movies

Sarah P

Fan Theories

Family Guy has grown more and more bonkers over the years, introducing a multiverse and time travel. With an interesting <a href="/list/all-family-guy-characters/reference">cast of characters</a>, great political satire, and <a href="/list/funny-peter-griffin-quotes/nathandavidson">hilarious Peter Griffin quotes</a>,&nbsp;what's not to love? Along with that comes Family Guy fan theories that range from connecting the show to American Dad to a debate if Stewie or Brian are really running the show.&nbsp;Family Guy poses a lot more questions than it does answers. Here are some of these fan theories about&nbsp;Family Guy&nbsp;that actually make a lot of sense. Be warned: this list contains spoilers. If you're all caught up on the show, be sure to also check out more <a href="/list/what-to-watch-if-you-love-family-guy/watchworthy">shows like Family Guy</a>.

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The 'Family Guy' Fan Theories That Cast The Show In A Seriously Different Light

10 'Family Guy' Fan Theories That Get Dark Super Quickly

Sawyer Grant

Lists about history's greatest TV show, which ran from 2003 to 2006 and then popped up in our lives again in 2013 and again in 2018 and who even knows what can happen next?

It's Arrested Development

Arrested Development

Even the goofiest sitcom can hide a deeper meaning if you really look. Fan theories have cropped up around television staples like Seinfeld,&nbsp;<a href="http://www.ranker.com/list/friends-fan-theories/alexandra-plesa" target="_blank">Friends</a>, and especially the cable-turned-streaming oddity <a href="https://www.amazon.com/Arrested-Development-Complete-Seasons-Bundle/dp/B000JJ3Y78?&amp;tag=rankercom-20" target="_blank">Arrested Development</a>.&nbsp;The show is known for cramming tons of subtle jokes into <a href="https://www.ranker.com/list/best-arrested-development-episodes/reference" target="_blank">every episode</a>, giving fans more to discover with every viewing. The writers love to leave little hints, clues, and easter eggs, so it&#39;s no surprise there are so many fan theories about Arrested Development.

Some of these theories focus on the family ties of the Bluth clan. Viewers have suggested a different parentage for the eternally put-upon George Michael, and have even connected narrator-slash-character Ron Howard to the Bluths. And then there are the really out-there ideas. Do you think the Bluths are&nbsp;representations of Norse gods?

Whatever you think of the plausibility of these Arrested Development fan theories, there&#39;s no denying that it&#39;s good to have the show back. The quirky comedy has become a cult classic since it first aired on Fox in 2003, and thanks to Netflix, TV watchers can enjoy the Bluth&#39;s continued misadventures. Check out these crazy-yet-somehow-still-plausible Arrested Development theories, and vote up your personal picks. After you&#39;ve made your voice heard, make sure to check out these <a href="https://www.ranker.com/list/what-to-watch-if-you-love-arrested-development/watchworthy" target="_blank">other great shows like&nbsp;</a><a href="https://www.ranker.com/list/what-to-watch-if-you-love-arrested-development/watchworthy" target="_blank">Arrested Development</a>.

'Arrested Development' Fan Theories From Reddit That Are Just Crazy Enough to Work

The 14 Best Arrested Development Fan Theories, Ranked By Fans

Amelia Brooks

Fan theories about everything in the wizarding world. 

Deconstructing Harry Potter

Luna Lovegood

Harry Potter&nbsp;is one&nbsp;of the biggest franchises in history. It&#39;s&nbsp;gifted us with so much magic,&nbsp;lore, and incredible&nbsp;characters&nbsp;that&nbsp;there&#39;s bound to be a fanbase to match. One of fandoms&#39; favorite things to do is scour the internet for fan theories, and there are a lot of them. Luna Lovegood <a href="https://www.ranker.com/list/side-characters-that-are-low-key-geniuses/williamsbrianjake" target="_blank">captured our hearts from day one with her quirkiness</a>&nbsp;and lulling voice, so it&#39;s no surprise that fans are still curious about the things that went unsaid. Which Luna Lovegood&nbsp;fan theory do you think could be true? Vote up your favorites!

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Harry Potter Fans Share Luna Lovegood Theories As Weird As She Is

Luna Lovegood Theories Harry Potter Fans Need To See

Henry Adams

Ginny Weasley

Harry Potter&nbsp;is one&nbsp;of the biggest franchises in history. One of fandoms' favorite things to do is scour the internet for fan theories, and there are a lot of them. Ginny Weasley&nbsp;has always been a favorite Weasley, with her spunky attitude and genuine love for her family. But, it's no surprise that fans are still curious about all the things that went unsaid.&nbsp;Which Ginny Weasley fan theory do you think could be true? Vote up your favorites!

Harry Potter Fan Theories About Ginny Weasley That Actually Make A Good Point

Harry Potter Fan Theories About Ginny Weasley

Corrine James

Combat Sports

Dragon Ball and its many sequels remain among the most beloved anime and manga series of all time. The franchise first captured public attention with Akira Toriyama's original Dragon Ball manga in 1984. Today, Dragon Ball Super continues to captivate fans worldwide. As excitement grows, so does the creation of fan theories.This list explores fan theories about Dragon Ball villains. Some take a meta approach, such as the theory suggesting that Majin Buu represents Japan’s most unflattering views of America during World War II. Others attempt to answer lingering questions, including one that offers a potentially unsettling explanation for Cell’s ability to asexually reproduce.Which of these Dragon Ball villain fan theories seem the most plausible?

12 Crazy Theories About 'Dragon Ball' Villains That Might Make Too Much Sense

12 Mind-Blowing Fan Theories About 'Dragon Ball' Villains

One reason for the Harry Potter series being so good is that there are plenty of characters outside <a class="edS-cl" href="https://www.ranker.com/list/golden-trio-details/loren-o_connell?ref=internalCrossLinking_keyword">the Golden Trio</a> that you love – or at least love to hate. <a target="_blank" rel="noopener noreferrer" href="https://www.ranker.com/list/fan-details-luna-neville-and-draco/saim-cheeda">Neville, Luna, and Draco</a> all fall into that camp and have led watchers and viewers to craft a number of fan theories about the three.

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'Harry Potter' Fan Theories About Luna, Neville, & Draco That Will Shock You

10 Fan Theories About 'Harry Potter' Characters That Make A Lot Of Sense

Jessica Wright

Fan Theories lists at Ranker - the ultimate source for lists and rankings in all categories

Fan Theories lists on Ranker

Fan Theories lists at Ranker - the ultimate source for hundreds of Fan Theories lists and rankings.