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This WMG page is for theories pertaining to multiple parts or the JJBA series as a whole. For theories regarding a specific part, visit one of the following pages:

Rohan Kishibe eventually wrote a new manga based on the Joestars' adventures
The guy is attracted to the strange and fantastical so it'd make sense he'd want to learn more about Josuke's family and their history of battling monsters and evil. Rohan also interviewed both friends and foes of the Joestars, including little runaway Anne, Mayor Smokey Brown, and several of Dio's surviving henchmen, such as Hol Horse and the Oingo Boingo brothers. He'd likely have to change a ''lot'' of names though.

The final villain of the series will have a stand called The Final Countdown
And it will rewind the universe so much we end up back at Phantom Blood, thereby resetting the series in an Infinite Loop.
  • Close. We got Steel Ball Run instead, and it was called Made in Heaven.

The Jojo universe is at least partially connected to the Hellsing Universe...
  • So, the obvious ones, Nazi super science and concentration on the pillar men. How did they have any idea what the pillar men were apart from hearsay? Simple, Alucard was one of the original victims of the stone mask before Jonathan's father discovered it and after Zeppeli lost it.
  • Santana's body isn't referred to again because it was traded by the Speedwagon foundation to Millenium in exchange for their support in battling Kars at the Colosseum, they weren't aware of their aims and were convinced it was solely to research means of defeating the vampires.
  • Since Hellsing takes place during the 90s it's possible Millenium would've spied upon DIO and been aware of his actions, helping justify the effectiveness of their vampiric soldiers.
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  • Stroheim's cyborg body was made using the same tech as was used on The Major.
  • Speedwagon would've wanted to set up a British branch of the Speedwagon foundation, but after being made aware of the existence of Hellsing, allocated the funds to them instead.
  • The Nail is made of the same material as The Arrow, but granted supernatural powers different from stands.

Dio actually had a daughter.
And unlike most of his other children, his ended up having the most similar abilities. Extreme skill with knives, and the ability to stop time. However, we'll never see this character in JJBA canon because she's stuck behind a barrier in a whole other world. Some of you may know this world as Gensoukyou...
  • Possible that he has a daughter considering the amount of times he had sex with women from all over the world.

Star Platinum caused Jotaro to slowly reverse-age since he first got his stand at 17
Compare his appearance in Part 3 and Part 6. He looks younger.
  • While Stands cause their users to age slower, the effects are not as strong or apparent as the Ripple. Jotaro on the other hand manages to look younger as the series progresses instead of slowly aging like his ripple-using ancestors. Star Platinum also has a certain degree on time-manipulation.
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  • Justified as a result of Araki's huge leap in Art Evolution, but since he is the most recurring character throughout the series he kind of stands out.

The frog Doppio ate after his battle with Risotto is the great grandson of the frog Zeppeli punched in part 1
  • Not possible. Frogs don't live as long as humans do, so if the frog Doppio ate was a descendant of the frog Zeppeli punched, there would be far more generations in between-the frog Doppio ate would more likely be the great-great grandson of the frog Zeppeli punched, if they're related. On the other hand, Ripple and Stand users age slower than other members of their species, and we do know that animals can have Stands...
  • Not to mention the fact that the frog Zeppeli punched was in England, while the frog Doppio ate was in Italy. Not impossible that the frog's descendants progressivly moved south during the intervening 113 yearsnote , though.

Joseph of Arimathea will turn out to be a historic JoJo

Why else would he have been brought up by name?

Kakyoin, Bucciarati, and Ermes Costello are descended from Zeppelis

Zeppelis have a bad track record for befriending Joestars and dying heroically and painfully. All three of these side characters fit this. While they do not have the Zeppeli name they could be descended from them genetically. A woman in the Zeppeli bloodline might have married men of the Bucciarati, Kakyoin, and Costello bloodlines, or a man had an illegitimate child with members of those bloodlines. And by fate the three have become associated with their respective main JoJos.

Giorno is still around

Gold Experience Requiem kept him from being Reset Button'd, but it couldn't do the same for anyone else. Plus Araki made some comment in Stone Ocean that Giorno "might be in Florida", why would he make such a comment if Giorno wouldn't ever show up ever again? ... of course this is probably wishful thinking.

  • Well he is a son of Dio. Maybe he was being recuited but turned down the offer.
  • That isn't how Made In Heaven works. EVERYONE should still be around, sans those killed directly by Pucci. You don't need to be immune to the effects to stick around after the reset

JoJo is a creative retelling of Araki's real-life bizarre adventures

Araki regularly fights vampires, immortals and people with insane powers all the time when he's not writing crazy awesome manga. Stand Users and Ripple Warriors also age slower than normal humans, and Araki doesn't age.

  • By that logic Bruno Bucciarati is Tetsuya Nomura.

The Ripple is an early form of Spiral Energy

'Cause of... uh... the patterns they cause, and... er, it'd be neat? (I should have written more on this when the idea first struck me. Bother.)

  • But then wouldn't Speedwagon have had access to it?
  • Spin, the equivalent power in SBR, is closer. TTGL is probably a resultant universe that would come about if Pucci hadn't been killed at the end of Stone Ocean.

The Stand can manifest itself by the rage of a pure heart, like the Super Saiyan

Jonathan Joestar had his own Stand, a very short range one — and so a very powerful one. This troper guesses that its power is something like fortify all the Joestar's bloodline to inherit Jonathan's force of will and body. I'm not making this shit up! It can be seen here!

The Flash was the user of the Speed Force Stand. Then he outran his own Stand, who became the Black Flash

Diavolo is the son of DIO.
Dio sneaked in to the prison with the World to conceive a powerful minion for future use. Also he conceived Ungaro Rykiel, Donatello and Versace at the same time.
  • Err - Dio wasn't exactly around to do this at the time. Furthermore, Diavolo was the one who originally discovered the Stand arrows, meaning Dio would not have The World at his disposal.
    • He could, however, be a descendent of Dio, probably from some mortal dalliance. Unless JJBA Vampires can have babies when they aren't attached to a not-quite-vampire body.

Dio never had a chance of becoming as strong as he once was after Part I.
  • And it was Enya's fault, because she unlocked The World and Dio became too reliant on it. Even without that Stand, Dio was using Jonathan's body, and as such, was restricted with what he could do, no longer having his own body. Freezing blood, for example...
  • It's implied that it is because the neck scar wasn't fully healed yet, meaning that his head and Jonathan's body weren't fully synced yet. It is likely that the reason he was so determined to feed on the blood of the Joestars is because that was the only way to heal the scar. Supported by the fact that he became significantly stronger and his timestop increased only after he drank Joseph's blood.
  • Dio appears to be physically stronger after gaining Jonathan's body than before, and he becomes more resistant to the Ripple.

Dio had kids to better sync with Jonathan's body.
  • If Jonathan's grandson gave him such a big boost, imagine what would have happened if he drained Jonathan's biological son instead. Or three of them, as the case may be. It would also explain why he didn't seem to give his henchmen any orders to take Joseph alive. Being able to drain him then was a happy accident, rather than his main goal, and he already had his main plans well underway by that point.

Dio Brando is still alive, and is in fact Santa Claus.
The only way Santa Claus could be able to travel all over the world in one night is if he either A) can travel in time or B) can stop time, and since there are no time travellers in the JJBA universe, it must be a time stopping ability. Because Jotaro is limited to stopping time for only 5 seconds, that means that Santa must be Dio under a clever disguise. It also explains why Santa only acts during the night: As a vampire, he would be killed by sunlight. Dio survived his battle with Jotaro, escaped to North Pole and took the guise of Santa. Giving out presents is just a part of his diabolical plan of creating a perfect world for himself and his followers. The elves are actually zombies and vampires Dio created.

The World was never Dio's Stand
it was Jonathan's all along. Evidence as such: A: Dio only used it after stealing his body. B: Stands are the manifestations of life energy. something Dio's vampiric body lacked. C:his descendant, Jotaro stopped time himself. further hinting at "The World" being Jonathan's Stand
  • Then what about the vine looking Stand that looks like Holly's and Joseph's? Dio also shows to have the same ability Hermit Purple has. See two entries below.
  • One of the art books identifies the Hermit Purple lookalike as Jonathan's contribution to Dio's stand power, so the World is probably more Dio's stand. However, given that Jotaro has something very similar, I'd say that Jonathan also had some sort of affinity for the World that he passed down.
  • Looks to be jossed as of the SBR universe. The World is Dio's stand. Diego's "first" stand was an infection caused by another stand user that he was able to control via a corpse part. Later we see Diego with his own The World. Tusk and Hermit Purple, and type alikes, look to be stands partially born from the Spin and Hamon respectively. So in Dio's Advocate, had Jonathan somehow developed a stand without ever learning hamon or spin it might have been either, or close to, The World or Star Platinum.

The Red Stone of Aja is a meteorite fragment similar to the arrows
We knew next to nothing about the Red Stone other than the fact that it's used to grant supernatural powers so why not?
  • The Stone isn't supernatural, though. There are many red stones like it that can amplify sunlight in the Jojo world; Kars actually has one in a flashback. The only reason that specific Red Stone is important is because it's the only one big enough to give a Stone Mask the strength to penetrate a Pillar Man's brain all the way through.

Jesus was the first JoJo.

Hey, a man named Joshua bar Joseph who can grant people Stands? Not too far fetched in this series. Now whether the rest of the JoJos are descended from his siblings or if Jesus did the whole Holy Blood, Holy Grail thing and had kids is up for debate.

  • It would explain Jesus's ability to walk on water. It also explains the Corpse Parts in Part 7 having such extraordinary powers.

Part 9 will be an adaptation of parts 5 and 6.
Part 7 was a mix of parts 1 and 2, with minor references to 3. Part 8 seems to be a mix between 3 and 4 with a little bit of 5. So part 9 will be similar to parts 5 and 6. Bonus points if it leads to the 2 timelines merging at the end or a new one is created.

Part 9 will be set in space
Part 8 is in 2012. Araki pretty much only has the choice of going further in the future or using more AU/time travel shenanigans at this point, making sci-fi a likely genre change. Maybe Stands will have been discovered by science.
  • He could go back in time or set it at the same time if it's sufficiently isolated from Part 8; part 5 could potentially have taken place at or before part 4 with just a few tweaks.

The reason that Jotaro wears a new jacket after Stardust Crusaders...
Is that Bancho Leomon stole it.

Diavolo is the son of Kars.
Hear me out on this. Every part of Kars is a live, viable organism, capable of endless adaptation. As Kars was banished from the Earth, one or more pieces of him broke off, and remained in orbit for years before finally falling to Earth. A piece of Kars wound up in an all-women's prison, where it somehow impregnated one of the inmates (Green Baby shows that stranger conceptions are possible). Her child was born after a strange pregnancy, and developed mostly normally until it had developed enough that Kars' personality began to take over - at that point, Diavolo abruptly began trying to obliterate all signs of his own existence while spreading the stone arrowheads (to create a new race of superbeings for his dominion of the world to "feed on"), and his original personality was suppressed into Doppio. Note that both prefer to go virtually (but not quite) shirtless, have flowing pink hair, and talk about being "at the top" while displaying almost no emotion.
  • Impossible. Didn't you read Kars' bio? SEX: USELESS
    • Also, wouldn't that piece of Kars decide to mutate into a clone bent on rescuing his original self from floating through space.

The Stand Arrows are pieces of Kars' body.
Consider: they fell from space, have strange abilities which somehow make physical the effects of The Ripple, and are otherwise unexplained. Maybe Requiem wasn't trying to turn Earth's life into that of another world, but causing it to mutate into the traits of other beings from Earth, similar to Kars' "Ultimate Lifeform" abilities.
  • The Stand Arrows would most likely predate Kars' defeat, though.

The things Jotaro saw and experienced during Stardust Crusaders turned his hair white with stress.
And thus, during Diamond is Unbreakable, he switches to a white outfit to make it less noticeable. Over the next 10 years, hair dyes began to improve, thus, he was able to get back his original hair color without it looking fake by the time Stone Ocean rolled around.

Having Stand abilities causes mutations.
Since a Stand is a part of your own life force which has been twisted to keep outside of your body, and sometimes even act independently from you, it (ahem) stands to reason that it might alter the way the rest of your life functions - I.E., causing strange physical changes to develop over time. In most cases, these are fairly minor - Giorno's hair color, or Funny Valentine's impossible weight loss. However, for Automatic Stands, which remain outside their controller's will and thus twist their life further than usual, the effects can be much more severe. This is why some Automatic Stand users, like Polpo and Carne, barely even look human.
  • Likewise, Heavy Weather causes normal people to just think they are slugs, and see others as slugs. Only Stand users physically transform, sine their Stands make such radical changes possible.

Diavolo got Notorious B.I.G. from Pucci
How else would he have known about it? Pucci (or, more likely, Dio) made a deal with Diavolo, and his end of the bargain was giving him a Stand disc which could be the perfect operative: deadly against Stand users, and totally incapable of gathering dangerous knowledge, since they would die during the mission.

AU-Jolyne and co. will return in Part 8
This is assuming Pucci's new universe from part 6 is the SBR universe.

The facts we know so far are that Jolyne, Anasui, Hermes, and Weather Report have AU counterparts (Irene and Anakiss for Jolyne and Anasui) and original Emporio transferred over intact, and most importantly that Irene is still part of the Joestar bloodline.We also know that Jotaro as Irene's father has a counterpart. However, we also also know that Kira has already taken the place and lineage in the Joestar bloodline that Jotaro should have, which raises the question of just what Irene's parentage is.

So, to wrap things up and make clear where exactly Irene came from, they'll all be brought back. Emporio will also be back, still tagging along with Irene after the Made In Heaven screwed the universe, and provide a welcome callback to previous parts. Because the timeline during Stone Ocean doesn't apply to the new universe, the final chapter of Stone Ocean (What a Wonderful World), in which Emporio is reunited with Irene and co., could have happened before Jojolion.

Possible reasons for Irene's return:

  • The person Kira fused with to become Josuke is actually Irene's father, so she arrives to get permission to marry Anakiss, as she stated at the end of Stone Ocean, only to be surprised by Josuke instead of her father. The reason Josuke is seemingly so young despite both halves being adults, according to this WMG, is due to lolwalleyesmagic.
  • Kira was Irene's father (unlikely, since this WMG predicts Irene being marriage-age, if a bit young, at the time of Jojolion and Kira is 29 right before the beginning of Jojolion. But, hey, lolwalleyesmagic) and she arrives as per above.
  • Kira has almost been established as an evil Joestar cousin (or counts as a Joestar cousin due to being the son of Holly Joestar), and Irene and/or Irene's still living father must take responsibility for him as true Joestars. At first, they will target Josuke for being so similar/his direct continuation. However, because Irene doesn't have "Jo" in her first name, she will realize that Josuke is more Jojo than her and thus defer to him as the truest Joestar. This is flawless logic.

Part 10 will star the son of Giorno, who survived Made in Heaven.
I know part 8 is still running so it's a little early to be making any guesses about part 9, let alone 10, but the logic behind this theory is a formula of sorts: If x is an even number, then let (1/2)x=y. Now, notice that the protagonist of Part x is always directly connected to the protagonist of Part y. note 
  • Joseph (2) is Jonathan's (1) grandson.
  • Josuke (4) is Joseph's (2) son.
  • Jolyne (6) is Jotaro's (3) daughter.
  • Josuke (8) is Josuke (4) in an alternate universe.
If this pattern continues, part 10's protagonist will have direct connection to Giorno. And since Giorno could very well still exist in the current universe thanks to Gold Experience Requiem, the connection could easily be one of blood.
  • The twist being that AU-Giorno (as a descendent of Diego Brando) also exists, and the original Giorno will be set up as the main antagonist (though perhaps not exactly evil, or the final antagonist) due to his mafia Godfather ways. The end of Stone Ocean said something about two equivalent characters not being able to exist in the same dimension, but SBR shows that they can cross-over as long as they don't touch, so the specifics of coexistence between AU counterparts is up in the air enough for it to work.
    • The concept of the two not being able to touch would make for an amazing fight between original and AU-Giorno. Or the original could use Gold Experience Requiem to bypass that whole thing.

Josuke (part 8) is a personification of Johnny's Spin and the power of the Corpse Parts
In addition to being partly Kira. Johnny is a local hero. His last act of using the Corpse Parts and then the Super Spin seems to have impregnated some parts of Morioh with mysterious power. The Wall Eyes create fusions of things that are in the ground nearby them, so they could probably affected by the lingering vestiges of Johnny and the Corpse Part's power in the earth.

The Corpse Parts have the power to remove (harmful) things. The Super Spin can give objects "infinite rotation"—the property of continuously staying, being attracted to, or sticking to a certain place (in addition to being metaphysically ripped apart, but that's another deal). Kira's stand created exploding bubbles.

Therefore, the Wall Eyes fused those aspects together into Soft&Wet—Kira's Stand's bubble to transmit the power, the Corpse Parts to remove attributes, and the Super Spin to apply them to other objects. This leads us to...

Josuke (part 8, again) will learn to use the Spin
As per above WMG, Soft&Wet's ability to transfer attributes is actually an application of the spin (the Super Spin's "infinite rotation" fixes things together at a fundamental level). Just as Johnny learned to use the Spin to synergize with Tusk, Josuke will do the same for Soft&Wet.

Now, since the Super Spin requires riding a horse-shaped thing at a certain speed, Josuke will accomplish the same feat via motorcycle, replicating Part 4 Josuke's epic motorcycle ride.

A fungus with a Stand will appear.
Because hey, there's been animals and plants with Stands, so why not add another kingdom of organisms to the ranks? Maybe it could be a whole colony that has the Stand, like a fungal version of Foo Fighters.
  • In terms of large "organisms" and going weird places with Stand Users, maybe the entire town of Morioh has sentience (...for some reason. It's more or less magic already.) and its stand is/are the wall-eyes.

SBR Diavolo is a indirect descendent of Diego and Johnny and the next JoJo is a member of both Joestar and Brando family and its stand's battle cry is Mura (Muda and Ora combined) meaning unevenness. SBR Diavolo's battle cry is sakujo meaning erase like the original's time erase ability.
  • Sakujo is Teru Mikami's mantra word. Teru is the name of Norisuke the First's wife and Yoshiteru Kira is Holy Kira's husband. "Kira" or Light Yagami considers himself a god like Dio and he's a Devil in Plain Sight, Diavolo means devil. OH MY GOD!!!! One of SBR Diavolo's parents could be a Higashikata or a Kira.

We, the readers, can see the Stands because we are all latent Stand users.
Because what's the alternative ? That it's only some artistic license from Araki's side ? Don't be ridiculous !
  • And this is because the manga makes whoever reads it into a Stand User.

Your Color May Vary is Canon, at least for the Stands.
As You Know, Araki treats color shemes as something that is not absolute and can be changed at a moment's notice. However, in the case of Stands, this might be justified: why would it be impossible for a spiritual entity, something that lacks a physical form, to be able to change its color? As for the rest of the world, maybe light simply works differently in this series. I mean, according to All-Star Battle, the sky in Morioh is brown.

Jesus was a ripple and/or spin user.
Using the ripple (or spin in another universe, or possibly both techniques), he was able to heal all who came to him, using his own hands, or using water and mud as conduits. Jesus (aka JOshua bar JOseph)must have been a very powerful ripple/spin warrior. He'd better have a stand as well.

The prophecy about the Red Stone of Aja was a Self-Fulfilling Prophecy.
During Phantom Blood, we learn that Tonpetti was able to foretell a lot of details surrounding Will Zeppeli's death, but he wasn't able to determine when was that going to happen, he only gave a nebulous and cryptic lecture. So, masters of Hamon can tell the future to a certain degree.Now, in Battle Tendency, we learn that Hamon masters and Pillar Men have been at war for centuries, and Hamon masters had the Red Stone of Aja, a MacGuffin that could make the Pillar Men invincible. So, why did they keep it for so long instead of destroying it, like Joseph suggested? According to Lisa Lisa, there was a legend that said that, without the Red Stone, the Pillar Men couldn't be defeated.Where did that legend come from? Well, we know that Hamon masters have a certain degree of precognition, so what if, centuries ago, a Hamon master tried to see the future to learn how to finally defeat the Pillar Men? After Kars became the Ultimate Being, he was effectively invincible. He was also the last Pillar Man, and he was only defeated thanks to the Red Stone. So, a Hamon master saw that, learnt that the Red Stone would be neccessary to defeat the last Pillar Man, and created a prophecy that turned into a legend, ignoring the fact that without the Red Stone there wouldn't have been an Ultimate Being at all.

Diavolo survived the effects of Made In Heaven and made it into the SBR universe.
And he's still dying.
  • Not how Made In Heaven works. But Diavolo is definitely still dying.

The World is Dio's Stand, while the Hermit Purple-esque Stand he is seen using once in Chapter 122 of the manga and Episode 3 of the anime is Jonathan Joestar's Stand.
Joseph and Holy manefested bramble-style Stands, as well, so it stands to reason that such stands are unique among the Joestar line. Jotaro's Star Platinum is different because the fights he gets into necessitates a Stand that's more battle-oriented, while Holy is pacifistic (hence why her own Stand also hurts her), Joseph hasn't done much fighting since defeating the Pillar Men, and Jonathan couldn't fight on account of being dead and stuck under the sea for a hundred years while Dio fused his head to his body.

In the SBR universe the Dark Will got passed on instead of the Golden Spirit.
In the original universe George Joestar and Jonathan passed on a spirit of heroism inherited by many of their decedents, mostly the other protagonists. However in the SBR universe Johnny ended up passing on the Dark Will, which is why even though Gappy is a nice guy he sometimes manifests it.
  • Gappy being a fusion of two different people might have inherited his nice guy trait from Josefumi, it is actually Kira who inherited the Dark Will.

Dio's blood weakened Joseph's Hamon.
After Joseph received the life-saving blood transfusion from Dio's corpse near the end of Part 3, the vampiric nature of his blood would've caused Joseph's ability to use Hamon to weaken significantly. This can explain why he doesn't use Hamon in Part 4, as well as why he looked significantly older: the combination of time and weakened Hamon would've caused his body to age, whereas he was still relatively young-looking and physically fit for a man of 67 in Part 3, thanks to the youth-preserving properties of Hamon.
  • Alternatively, Dio sucking out Joseph's blood caused complications that even the Ripple could not fix.

Giorno will show up in JoJolion.
Think about it, if he possibly wasn't affected by Made In Heaven, there could be a chance of him showing up in the future, though he'd be in his mid-20s and would need some reason to be in Japan.
  • Not how Made In Heaven works. The SBR universe is not the same universe as the one created by MIH.

The reason Jotaro became a marine biologist... because he rethought his life after being scolded by the Captain Tenille imposter for smoking on deck. Hey, just because someone's evil, doesn't mean the virtues they do have can't be inspirational!

Vanilla Ice has a counterpart in the SBR Universe, and he is named Macklemore.

By the end of Part 9, there will be a stand called dirty loops
It's not like Araki doesn't know who they are.

Requiem, the Stand Arrow and Kars are all related.
A previous WMG brought up the idea that the meteorite that was forged into the Bow and Arrows was a part of Kars' body. The meteorite landed on Earth about 50,000 years before the story, so that would normally make that particular theory impossible... unless it was a Kars from a previous loop.

The non-canon novel Jorge Joestar brings up the idea that Pucci's Made In Heaven has reset Earth a number of times. Each loop is slightly different, but the events of Battle Tendency happen in most of them, and since the resets are limited in scope to Earth, there's a whole bunch of different versions of Kars floating around in space (and a bunch on the planet Mars. It's a weird novel). As part of this WMG, a previous Kars was ejected into space during one of these loops, but didn't have enough escape velocity to escape Earth's gravity well, so remained in orbit around Earth. Just like in canon, Kars' body turned into a fossil and he stopped thinking, but since he was in space, he survived one or more resets. Eventually, his orbit decayed and he fell to Earth, his body breaking up during the fall, and one fragment was retrieved and turned into the Bow and Arrows.

Though Kars is catatonic, he's still alive, and his life force gives the Arrows their powers. Stabbing oneself with an Arrow infuses a small amount of Kars' life force into them, awakening a Stand in them if they possess the right qualities. The Arrow seeks out those who have the potential to control a Stand, but weren't born with one; the infusion of Kars' life force presumably mimics whatever process causes some people to have natural Stands. Jorge Joestar also implies that the Holy Corpse in Steel Ball Run is not Jesus, but a version of Dio that became the Ultimate Lifeform with the Stone of Aja and Kars' Stone Mask, so if we go by that, there is precedent that the body of an Ultimate Lifeform can awaken Stands in people.

But as we see, stabbing a Stand itself with the Arrow grants them even greater power, creating a "Requiem" Stand. When Silver Chariot becomes Chariot Requiem, it takes Polnareff's dying wish of protecting the Arrow to heart, but it also has its own agenda; it swaps the souls of every living thing in Rome (or possibly the entire world), which starts to mutate some people. The characters speculate that Chariot swapped some people's souls with those of life forms from another world.

However, according to this theory, both the Arrows seeking worthy users and people mutating due to Requiem is actually Kars' doing. He's still dormant, but either his abilities or his sheer willpower is strong enough that the Arrows made from his body still have a semblance of independence. By awakening Stands in people, they hope to eventually create a Requiem Stand, but since they don't have consciousness per se, anyone spiritually strong enough to sustain a Requiem Stand can easily override the Arrow's basic independence and control the Requiem Stand for themselves. Polnareff had the misfortune of dying shortly after gaining his Requiem Stand, so Chariot Requiem could directly act as the Arrows' proxy.

Kars' Ultimate Lifeform abilities to alter his own genetic structure is responsible for the mutations. When everyone swapped souls, a bit of Kars' life force piggybacked on each swapped soul. The goal here was to take control of every living thing on Earth, using the soul swapping as a distraction while he took over everyone's bodies and used his abilities to turn them into clones of himself. But since he's still catatonic, his abilities act more or less randomly by mutating people into possible forms of life. Once Chariot is defeated, everyone's souls are swapped back, excising the bit of Kars' life force in everyone during the process. Since Earth is reset a few years after this, the remaining Arrows, and the version of Kars they were created from, are destroyed for good.

The rock that Jonathan held all the way back in Part 1 is the same rock that crushed Johnny's head in Part 8.
After Will Zeppeli healed Jonathan of his broken arm, Jonathan demonstrated his restored strength by carrying a large rock. When he dropped it, it rolled down a hill and went into a series of inexplicable events, which may or may not be caused by Funny Valentine's D4C. This eventually culminated in the final event where Johnny's use of the Holy Corpse to heal his son causes that very rock to crush his head out of nowhere.

Kars didn’t survive Made in Heaven.
If the universe has been repeating, then unless its finite there should be an infinite number of Kars...yet there doesn’t seem to be any more than the one. And even assuming there have been previous Kars, who’s to say the Red Stone of Aja would garner complete immortality. Yes, Ultimate Kars can reconstruct himself on a cellular level…but eventually the very protons that make up those cells decay over time. As such, Enrico speeding up the universe to its end and back again may have finally given Kars peace.
  • Made in Heaven doesn't work like that. The only people that are replaced with copies are those that Enrico Pucci killed pre-reboot. Everyone else lives through the end of the universe and comes back from the rebirth locked to their fate and aware of their own destiny. As such, Kars is STILL somewhere out there floating in space, having been forced to re-live his defeat at the hands of Joseph Joestar yet again... AND fully aware of the billions of years he still has ahead of him floating alone in space. Poor Kars.

Part 8's Big Bad will use Time Travel.
They've utilized pretty much every time-based power for the villain except the obvious one: time travel. Said power would also allow Araki to have a reason to set future parts in the past, while still being connected to the events of Part 8

Parts 9 and 10 will focus on the rebooted version of Joseph's father and daughter.
With the Cosmic Retcon, Araki's free to write about them without having to worry about continuity.

Stands are the next evolution of the Ripple and Jonathan would have been the first to develop one
The events from Part 1 demonstrate that the power of the Ripple/Hamon was created by humans as a measure of self-defense agaisnt the Pillar Men, only one in ten thousand bears the power to use it correctly and has cults of users across the globe who use it to fight agaisnt threats such as vampires, zombies or such threats. Those who are not amongst the select humans who can utilize the Ripple correctly can use it to a much lesser degree under proper instructions. Jonathan, for example, was part of these humans, and when Will Zeppeli transferred all of his lifeforce to him, Jonathan Joestar became the strongest Ripple user in existence, as seen when he was able to shake off the effect of Dio´s freezing much more efficiently than Dire or Will Zeppeli had previously. Joseph Joestar, his grandson and a Ripple user, once described it as a "ghost Ripple", although such a relation was never established after Part 3. The ghost ripple correlation would make it seem that the Stand is an evolution of the Ripple, and can be attained as long as a person has enough Ripple training. However, Joseph and the other Joestars after him only gained their Stands when Dio, inhabiting Jonathan´s body, was pierced by the Stand Arrow. This would certainly make this whole theory worthless, wouldn´t it ?

Not exactly. Joseph, while very skilled, was never the most talented Ripple user, and came to neglect his training. He truly only came to develop his Stand, Hermit Purple, because of Dio. However, in Part 3, DIO showed himself able to utilize Hermit Purple with just as much skill (if not more) than Joseph. This could come from the fact that The World´s powers enable Dio to utilize the powers of all the Joestar stands (Star Platinum´s strength, speed and time stop, Crazy Diamond´s healing abilities), and Hermit Purple is supposedly Jonathan´s Stand. However, it´s possible that Dio has Hermit Purple not because of The World. When Dio stole Jonathan´s body, he supposedly gained his augmented strength and Hermit Purple, but he could not use Hamon because he is a vampire, and thus, does not have a life force to tap into. What if Jonathan was one step away from becoming the first Stand user ? Hermit Purple would be the ideal Stand for one who seeks to identify, track and destroy vampires safely without the breathing restrictions (Stands are not dependent on the Ripple to function), and since Jonathan was not seen using Hermit Purple, it could be possible that Jonathan did not use Hermit Purple despite being able to because he had no idea of what a Stand was, and Dio, having more than a hundred years to play around Jonathan´s body, ended up figuring out how to use it. Dio may have been the first of many to be able to use a Stand without having Hamon powers.

Kars is directly related to the reason why Stands are so common in the later parts because of his Ripple abilities.
This theory does not take into account the events of Jorge Joestar or the Retcon from Stone Ocean.

If the above theory is true, and Stands are capable of being developed by those sufficiently advanced in Ripple training, why didn´t Kars develop a Stand, given his Ripple was 100x times stronger than Joseph´s ? Because he didn´t knew he could. Again, Stands were completely unheard of at that time, and Kars treated the Ripple as merely a way to transmit the energy. While Kars certainly could not be responsible for the Stand Arrows (the meteor carrying them came before he became the Ultimate Lifeform), he could be the reason why Stands are so widely common back in the Parts after Stardust Crusaders. Perhaps pieces of Kars, already a fossil in space, have broken off their original source and made their way to Earth as small meteor. As the Ultimate Lifeform, every single one of Kars´s cells has the power to turn into a living being, reproduce and utilize Ripple, and thus, develop Stands.

Perhaps the reason why so many people end up developing Stands is because broken pieces of Kars end up falling on Earth and transferring their energy into the human that touches them. In an attempt to survive through a host, these rocks end up transferring their life energy and power to the human that touches them. However, Kars is catatonic, and cannot control those individual pieces, leaving the Stand´s powers and personalities at the owner´s control. Since Kars can heal, these pieces can be replaced by new ones. However, they cannot turn into another Kars (even if, as the Ultimate Lifeform, they should be able to) because, again, these pieces are fossilized, and Kars, who is the only one who could control these pieces, is unable to command them to do so. Even if these pieces are unable to utilize the Ripple to develop Stands, they can still develop Stands on their own, as being the Ultimate Lifeform should give Kars the powers of all living beings.

This would mean that not only Kars is the one responsible for developing the Stone Masks that led to the creation of vampires, Ripple users, and Dio, he would also be the one responsible for the developing of the Stands. Anyone who touches so much as a rock (or maybe even a lifeform spawned from these rocks) will be able to gain the rock/lifeform´s ability to create a Stand (or gain the Stand naturally developed by the piece of Kars). This would also explain why the Ripple is obsolete in the Jojoverse after Part 3, as the pieces of Kars and the human race have already evolved beyond it. This would also explain why, if the Stands were supposedly so hard to achieve and control, later characters in later parts could develop Stands that had powers befitting of their natures (Alessi, Rohan and Akira are such examples). Since Stands are also spawned from Kars´s genes coming into contact with a creature, this would also explain why Stands can be hereditary. However, coming into contact with another piece of Kars´s genes would not generate another Stand, but reinforce the existing one. Unless, of course, Stand Arrows that generate Requiem Stands.

Diavolo relives the deaths of others due to the effects of Golden Experience Requiem.
Thanks to GER trapping him in an endless loop of death, Diavolo doesn't just experience his own deaths, but he will also experience the deaths of other people. And yes, this does in fact mean he will experience the deaths of other characters in the Jojoverse.

King Crimson could be beaten by any sufficiently fast Close Range stand without use of special powers.
Okay, so the obscurity of the function of King Crimson is a meme unto itself... BUT there are a few clear facts about it:
  1. In the time that is erased, only movements stick. When it starts and when it finishes, things are moved from one spot to another, but no actions besides movement in that time stick. No interaction between objects (besides feet and the ground) stick. They're all erased.
  2. Diavolo is not exempt from this. The only reason King Crimson doesn't screw him over as easily as everyone else is because he has precognition as a secondary power and can see the time before he erases it.
... The take-home point here is that King Crimson can't attack in the erased time (other than throwing his own blood, apparently). His attacks have to be made in real-time. His range is also around 2 metres. What this means is that after the time-erase, any stand that can react and counterattack BEFORE King Crimson's attack connects can beat him. In other words, any stand whose raw reaction / movement speed is faster than King Crimson. His precognition would hypothetically allow him to defend against such attacks, BUT given how fate works in the Jojoverse, he couldn't violate anything he himself saw... and he might well see his own death.
  • Not how KC works. In fact, KC actually CAN erase anything that Diavolo sees with Epitaph. Fate is already adjusted for it. Besides, Diavolo beat Silver Chariot, which is wickedly fast.

Jotaro modeled himself after Lisa Lisa, his great-grandmother.
Being a Ripple master, Lisa Lisa could have extended her lifespan to the point where she saw the first few years of Jotaro's life. Jotaro has a cool, unflappable demeanor, a cruel attitude hiding a heart of gold, and a smoking habit, much like Lisa Lisa did. However, since he was very young, he didn't get the whole picture of what made Lisa Lisa so cool, so his adoption of her approach got mixed results.
  • Additionally, his relationship with his rebellious, pervy child with a creative fighting style and a heart of gold is meant to further cement the comparison.

The Jojo series will end with part 10.
Seeing how part 7's run went for 7 years (2004 -2011), which means that it will probably be 2018 when part 8 finishes. If part 9 and 10 follow the same route, then part 10 will finish by 2032. By that time Araki will be around 71 (the age of retirement in Japan is normally 60).
  • The final page in part 10 will say "Hirohiko Araki Retires."
  • It's 2020 and part 8 still isn't over.

In one of the future parts...
The main group will lay down, defeated by the Monster of the Week, he's about to finish them off, and then, off-panel, a "Dorarararara!" is heard, and the bad guy is crushed. When the JoJo group gets up, they see an almost 100 years old Joseph, sharing a drink with Alessi, and commenting "They Don't Make 'Em Like They Used To".

The Wall Eyes...
...are the result of Johnny Joestar hiding the Corpse Parts in Morioh. They sunk into the ground, and their powers caused the Wall Eyes to happen, as well as its peculiar fusion effect. This could result in a twist that the Wall Eyes is a stand of Morioh itself.
  • Since the Wall Eyes have the ability to give Stands, doesn’t that basically make it a Devil’s Palm?

Mountain Tim's last name was Speedwagon.
Although never stated in SBR but may probably be relevant in Part 8 or the future, but Mountain Tim is just a stage name made by the SBR's Speedwagon. Tim's parents found the Speedwagon Oil Company and Mountain Tim was supposed to be next in line to run it. However, he was more interested in living the life of a cowboy and bounty hunter.
  • Either Mountain Tim had siblings who would instead inherit the company and may return in part 8 or a future part, or Mountain Tim sold the company once he came to inherit it.

The final part will end with a Title Drop.
They will mention finally ending this "bizarre adventure."

Not only does King Crimson's ability actually follow consistent rules, but they're the same rules as Killer Queen's Bites the Dust.
The way I like to explain it is that it's a stand ability that affects both time and fate; in the same way that Killer Queen: Bites the Dust rewinds time but leaves fate unchanged, King Crimson fast-forwards time but leaves fate unchanged; because fate is unchanged, undoing/skipping time doesn't undo damage. Additionally, since the time unhappens/never happened, nobody can remember it. With both stands, there is an exception to these rules: with Bites the Dust, it's the ability's "host", while with King Crimson, it's the stand user; this allows them to remember the sections of time that did not happen.

The differences are in the details of the ability Since Bites the Dust rewinds time, a Bites the Dust host can change anyone's fate by significantly altering circumstances of the fated object or person. This is possible because even though fate is already set in theory, in practice time and causality are still in effect on each pass of the time loop, so changing circumstances to preclude a fate is possible. However, King Crimson completely erases sections of time; during those sections, Diavolo may change his own fate, but not anyone else's; thus, he can't punch people because that's changing their fate, but he can throw his blood in their eyes, because it's the fate of his blood, which is a part of him, that he's changing.

Since Diavolo can only decide to start skipping time in advance, the ability is really only useful when combined with Epitaph's precognition ability.

This means that while he can appear to take action during time skips, he can only do so if he was capable of doing it without the cover of a time skip and Paradox Space is feeling generous towards him. When he killed Narancia, he first looked into the future and saw that his fate was already to do so, successfully. Since King Crimson's timeskip can't change Narancia's fate, Diavolo knows that he can skip time and, during the time skip, change his fate without affecting that of Narancia. From everyone else's perspective, time skipped and then suddenly Narancia was dead.

Even if Dio did use the Stone Mask on Jonathan, Jonathan would not be evil.
And in fact, Jonathan could've killed Dio right there. Think about it, if the transformation happened in the manor, unless he touched sunlight shining through the windows, Jonathan wouldn't be eradicated by the rising sun. Dio would've probably died, and Jonathan might've unknowingly slaughtered his servants and his father due to sheer vampire bloodlust.

  • I don't know; Chapter 54 seems to really joss this.

Vanilla Ice's SBR counterpart was Hot Pants.

Vanilla Ice is somehow related to the Nijimura family.
It's unclear just how old Vanilla Ice is, but he could've been related to the Nijimuras in some way. Now I know that not all families of Stand users have the same powers (Keicho and Okuyasu have VERY different Stand powers) but Cream and The Hand have a similar power, erasing space. Judging by how young Ice looked pre-vampirism, I'm guessing he could be a brother of Okuyasu's father, and it's implied that his father had a Stand before he sold his soul to DIO. The arcade game shows that Ice still has Cream even when de-aged by Alessi, implying he's had his Stand since a young age as well.

Future parts will involve SBR's George Joestar/Holy Cujoh.
They're the only two Joestars who haven't been protagonists yet.
  • Holy has shown up in Jojolion, though it seems that she doesn’t seem to be in good condition to become a protagonist.

Karen KUJO is related to the Joestars
Either she is Jotaro's sister, half-sister, or his (potentially distant) cousin, her father being a Kujo. In fact, she might even be very distantly a parallel mirror to Jotaro in a bizarre universe where Holly Joestar would never have to deal with the curse of an awakened Stand.

Future anime openings will be slightly altered at the Wham Episode
Similar to how DIO pauses the Part 3 opening in episode 47 and 48, showcasing that his Stand's ability has fully been revealed, the future anime openings will have one too.
  • Part 4 will have the opening reloop.
    • Confirmed.
  • Part 5 will have sections of the opening cut off.
    • Alternatively, Diavolo will be shown interfering between parts within deleted time.
    • And if it does have sections of the opening cut off, when GER shows up, the cut off sections will be "doubled".
      • Inverted. King Crimson "inserts" a section into the opening where Diavolo monologues.
      • Technically part of this theory was confirmed, Diavolo didn't insert a section, he simply revealed his own monologue that was already skipped.
  • Part 6 will speed up the opening.
    • Alternatively, it'll start with playing the first minute of Part 1's opening before fast-forwarding through all the openings and ending with the last 30 seconds of Part 6's opening. It'll also be a neat use of Book Ends for the end of the original timeline.
  • Part 7 will play an entirely different opening theme.
    • Alternatively, it'll flip back and forth between Part 1 and Part 7's Openings.
    • Part 8 is a bit tricky. So far, none of the candidates for Big Bad have time-related stands (the same goes for the rest of the cast). Assuming Jobin is the Big Bad (or at least part of the Big Bad Duumvirate), maybe perhaps it'll do something to the visuals but not the song - perhaps the intro will slowly appear as if it's burning up (gradually picking up speed).
    • The best bet right now seems to be Tooru. Perhaps the effect would be cracking the screen to reflect the infinitely destructive power of Wonder of U?

A big bad will be named Puruga Toriyama.
  • The devil and God but no purgatory? Possible Stand DVNO.

The Stand Arrows are designed to kill a target...
  • ...By flooding their body with hamon. Some fans believe that the purpose of hamon, among other things, is to bring about a stand through extensive training. The stand arrows simply convey a massive amount of hamon energy into the target's body, in hopes to overload them; the stand creation is a side-effect of all that energy. If unable to handle it, the target dies as expected. Vampires and Pillar Men are naturally even less able to handle all of this hamon, making them vulnerable to the arrow, especially since it, as an arrow, could pierce the skin. note  As such, it was most likely intended as an anti-vampire weapon.
    • But wouldn't that mean Dio would've died when Enya shot him to awaken The World?
      • By the time DIO gains his stand, he's not fully synced with Jonathan's body, which of course was adapted to using Hamon, so maybe it could simply cope with it better than DIO's actual body. Maybe I'm wrong. Maybe it's Araki magic. Maybe it was the work of an enemy stand.

Joseph's emotional state has gone downhill since after Stardust Crusaders.
Let's face it. Joseph Joestar is the longest living JoJo to date, and he's had it rough. While Jonathan and Jotaro were granted an early death; Jonathan in his 20s, and Jotaro in his 40s, Word of God says Joseph lives to be about 90, and is still alive and kicking in Part 6. Now let's think about what he's done since then; he grew up without a father and a mother, inadvertently sent Caesar to his death when he was finally getting along with him, died and came back to life twice, once with his soul actually rising to the afterlife, only to be pulled back down again when Jotaro revived him, gets chewed out by his other child and probably feels some melancholy for not being a good father to him, and in general, realizes his glory days are pretty much over when he abandoned his Hamon training. I wouldn't be surprised if at least by Part 4, he begins to regret having his life saved by his grandson.
  • Doubtful. The conclusion of Diamond is Unbreakable had him in far better shape than he was at his first appearance in the arc. He was borderline senile when he arrived in Morioh Harbor, mishearing words and tripping up. However, after taking in Shizuka, he's not only in better spirits but of a sharper mind. He sounded very much like Part 3 Joseph in his final scene. Having another daughter at his old age to raise plus getting involved in another bizarre adventure raised his outlook. He became a Speedwagon-like figure, especially given he's likely the Speedwagon Foundation's primary financial backer after he became a real estate tycoon. Finally, Joseph's story, unlike the others, has always been about escaping the curse of the Joestar bloodline.

Dio Brando is Suzi Q's grandfather.
Even before becoming a vampire he could probably get laid, and both her and Suzi Q have the same blond hair. He would end up having a one-night stand, however the child and Dio would remain unaware of each other and his kid would eventually have Suzi Q. Ironically Jotaro Kujo is his blood relative, which might go to explain where Star Platinum got its time-stop; the Hermit Purple-looking Stand is Jonathan's after all.
  • Jossed - Suzi Q is stated to be of pure Italian blood, whereas Dio is stated to be British. While it's possible that Dio's child in this scenario could have moved to Italy, Suzi Q would be of British-Italian Blood at the very least. The only possibility for this to be true would be if Suzi Q's parent was conceived during a trip to Italy, except such an event surely would've at least been mentioned after the time skip (not to mention that it took longer to travel back then).

Fates of the surviving characters from Part 4 between the end of Aureo Vento and the start of Stone Ocean
  • This whole section is dedicated to theories of what became of the Morioh Gang after Part 5's end and the start of the events of Part 6.
    • Wanting to take his self appointed job as Morioh's protector to the next level, Josuke followed in his Grandfather's footsteps and became a cop.
    • Okuyasu worked as an apprentice to Tonio. He's not on Tonio's level (because let's be honest, nobody can be as good as Tonio when it comes to preparing food), but he's still pretty good. During that time, Tonio became like a second older brother to Okuyasu. This experience working under Tonio would eventually lead to Okuyasu opening up his own restaurant that specializes in a combination of Japanese and Italian cuisine.
    • After coming home from Italy, Koichi continued to see Yukako. Eventually, the two got married and have a daughter who they both chose to name after the woman who brought them together twelve years ago, Aya Tsuji. Koichi works as a detective. He occasionally gets called up by Josuke to help out with investigations. He prides himself on his family and every time he's called out to work, he looks at a photo of them to remind himself what he's fighting for.
    • Yukako is Koichi's wife and mother to Aya Hirose. Inspired by Aya's work, Yukako chose to follow a similar career path by opening up her own hair salon called "Cinderella Deluxe." She kept Cinderella in the name as a sign of respect for Aya's memory and to carry on her spirit. Like Aya, she uses her Stand to assist her customers with whatever style they want to go for if it can't usually be done by conventional hairstyling means. She also made most of her own equipment such as the hair dryers (Hey, she made a homemade electric chair. Making dryers for her salon can't be too out of the realm of possibilities.) As a mother, Yukako is VERY protective of little Aya. Let's just say hurting her in any way would be the least health conscious thing you'd want to do. She also loves to play around with Aya's hair to see what styles would look cute on her and Aya loves to volunteer.

Josefumi Kujo's dad is the SBR/JJL equivalent of Joseph Joestar, making Josefumi Yoshikage Kira's uncle.
There are meant to be parallels between the SBR/JJL universe and the original JoJo universe. Part 4 Josuke and Josefumi have a lot of similarities, from hairstyle to the Joestar birthmark. There's been no mention of Josefumi's father, and given his behavior of craving attention and love, it's very possible he didn't even have a father figure in his life.

Part 8 Holy was born much later than Part 3 Holy. It makes it likely that her father could have a dalliance with Josefumi's mother, assuming he had Holy while he was young. It's unlikely that he was Joseph Joestar, though, because George II would have to have been extremely old by the standards of the time (in his early to mid 40s) to have Joseph so that Joseph could have Josefumi, who was born in 1991 (Note George was around the age of 5 or 6 in 1901). It's more likely that Joseph's son was the father of both Holy and Josefumi.

It would also explain how Gappy survived the fusion from the equivalent exchange: Family members are often the most compatible organ donors.

Diavolo is Jesus
Note that this is technically canon.

Araki is writing JoJo in a sort of trilogy fashion...
..and Part 9 will close a trilogy in the new universe. Parts 1-3 could be called the "DIO Trilogy", as it begins with Dio in Phantom Blood, the Stone Mask influence in Battle Tendency, and the end of DIO in Part 3. Sure, DIO is dead by Part 3's end, but his influence lingers in Parts 4-6, with Mr. Nijimura in Part 4, Giorno in Part 5, and Pucci in Part 6. Parts 4-6 can be considered the "Jotaro Trilogy", as in Parts 4 and 6, he's a major ally, and in Part 5, not so much, but still there to help.As for Parts 7 and 8, and the eventual Part 9, despite the vast difference in time periods from P7 (1890) and P8 (2011), there is a character who influences events in both parts, and which is why Parts 7, 8, and possibly 9, can be called the "Johnny Trilogy". Johnny is the protagonist of Part 7, and dies in Morioh in Part 8, while still influencing the curse of sorts. Not only that but he's also A distant relative of Part 8's Kira, so maybe Johnny or the SBR race will be mentioned or a key factor of Part 9.

Joseph Quit His Hamon Training After His Affair
There's a few lingering questions regarding Joseph by the time he's an old man. I suggest the following:

1. Joseph clearly has become some kind of jet-setting world traveler, possibly as part of his business as a real estate tycoon, and he's also become a leader in investigating weird, JoJo-relevant paranormal things that come up. Joseph's matured and he's not stupid, he kept up his Hamon training to keep fighting when needed. He implies in Part 3 that he's had other battles after Part 2 as well (could overlap with his natural laziness as others on TV Tropes have pointed out).

2. Joseph is still a boisterous super extrovert and still flirts with ladies while he's out and about the world. Presumably one night while in Japan his flirting goes too far, maybe under the influence of alcohol or something, and he impregnates Tomoko in a spur-of-the-moment porking.

3. One constant question that lingers in Part 4 is how Tomoko confuses Jotaro for Joseph. This could only be done if Joseph still looked young, which he would need to do by keeping up his Hamon training.

4. Joseph, being a flawed human being, realizes he made a mistake cheating on his wife and feels enormous regret for it even if he doesn't tell anyone about it. As shown in Part 3, he does dearly love his wife, so he gives up Hamon training so that he will look older and not continue to attract willing young ladies to him.

5. As shown in Part 1 by William Zepelli, losing one's containment of Hamon WILL suddenly get you looking aged. Joseph wasn't quite as old (or dying) as Zepelli was by then so by Part 3 he had looked past middle age but still had a lot of physical ability that wouldn't be lost until after he gets killed by DIO (which is sure to cause some assortment of problems for him later in life). So he still has Hamon by Part 3, but it's weak.

6. By Part 4, Joseph is clearly an old man and some of his functioning has gone, but it's also checked out due to him having to go somewhere to address something he really wasn't proud of doing and meet a son he never knew. His Hamon is gone now, but at least he has his Stand, and you'll notice he starts perking up more after rescuing (and later adopting) Shizuka and winning Josuke's respect. His physical strength is mostly gone, but his mental state and being are still strong.

  • Problem is that we don't know HOW much Hamon Training slows down aging - while we do know that Lisa Lisa was 50 by the time of Battle Tendency yet looked like she was in her 20s, there's no sign as to how intense her training was - it could just as easily be that how much aging is slowed down depends on how intensely you train with it as it could be that just training even a little each day would have the same effect on aging as training intensely. If intensity of practice is the main factor in determining how much aging is reduced, it's possible that he might still practice 1-2 times a week just so he knows how to use it.
  • This might also explain another reason why Josuke doesn't want his mother seeing Joseph. He says he doesn't want to see him be disappointed, but doesn't elaborate. Joseph probably didn't tell her his real age or the fact that he had a daughter older than her (but knew that he's married), so perhaps Josuke's trying to spare her the fact that she slept with a man in his 60's rather than his 30's.

There will be a group of Stands named after the opening themes of the Jojo anime

Dire and Straizo were full on gay.
Straizo's Hamon training allowed him to keep his composure after Dire was killed by Dio, but after the battle concluded what exactly happened hit him like a ton of bricks. His mental stability sustained until he started getting noticeably older and Master Tonpetty died of age, which is when he went completely nuts and his part of Battle Tendency happened. His line about "I'd rather go to Hell young than grow old and withered." implies that if he has any legitimate religious beliefs, he already figured that's where he was due for, and there's no evidence one way or the other as far as Dire goes, so might as well put the thought out there.

Star Platinum is the ghost of Bruford.
They look the same, Star Platinum's Rapid-Fire Fisticuffs are very similar to Jonathan's Sunlight Yellow Overdrive which killed Bruford, Star Platinum's defensiveness of Jotaro is very similar to Bruford's loyalty to Queen Mary, and it makes sense that Bruford would want to protect the great-great-grandson of his Worthy Opponent.

Jojolion takes place in a timeline where Kars failed in his uprising centuries before the series
This would lead to the survival of the Pillar Man race, which would later come to be known as rock humans. Furthermore, without Kars's experimentation, the rock humans never developed the incredible mutations showcased in Battle Tendency.

Joseph knew about Josuke all along, and was providing him with child support
Josuke seems to spend too much money for the son of a teacher and the grandson of a beat cop, especially after his grandfather dies. He has 25,000 yen shoes and designer socks (mentioned when he and Jotaro go rat hunting), he has about a thousand dollars (something like 100,000 yen) on his credit card (mentioned when Joseph buys stuff for the invisible baby), and burns through almost all of it. It also seems weird that Josuke shows up on Joseph's records at all, given that Joseph claimed that he didn't know that he existed. Tomoko might show up in his records, but the only way Josuke would show up is if someone was keeping track of Tomoko. It doesn't seem very likely that Tomoko would interest anyone enough to investigate her a continent away. Joseph possibly found out that Tomoko was pregnant before he left her, but he couldn't tell his family. All he could do for her is send her money. Tomoko probably still has lingering affection for Joseph because he still sends her money (not because it's money, but because he still cares). Joseph feels awkward around Josuke at first because he knew that he had purposefully ignored him all his life.

Part 9's protagonist will not be directly descended from Josuke, but rather Kyo Nijimura
She is after, part of the Joestar bloodline too.

Rohan is still around post reset
We know he can use Heaven's Door on himself from "Rohan at the Louvre". Perhaps he wrote in himself with Heaven's Door that he was "unaffected by whatever is causing the world to speed up", which is how he not only kept being able to make his deadlines, but also allowed him to remain after the universal reset.

Ending Themes for Future Parts
  • Part 5:
    • Gangster's Paradise by Coolio.
    • Fly Like an Eagle by Steve Miller Band- Alternatively, if the anime is two cours, this could be the song they use after Diavolo is introduced.
    • Cool Daddy Cool by Kid Rock- Bonus points if Narancia sings Joe-C's vocals.
    • Blue (Da Ba Dee) by Eiffel 65.
    • Wake Me Up Before You Go-Go by Wham!. (Complete with Giorno and the gang singing and dancing to it.)
    • A Bigger Mood by American Hi-Fi- Not only is it era-appropriate, the lyrics could relate to Giorno's journey to rise in the Mafia and usurping Diavolo.
    • Boss Of Me by They Might Be Giants. That is, if Malcolm in the Middle doesn't have exclusivity over it.
      • All Jossed. It's Freek'N You by Jordeci. The second ending theme is Modern Crusaders by Enigma.
  • Part 6:
    • 18 And Life by Skid Row.
    • Dead End Justice by The Runaways.
    • Bad Reputation by Joan Jett.
    • Cherry Bomb by The Runaways.
    • Ordinary World by Duran Duran.
    • Roundabout by Yes for the final episode.
    • Cowboy by Kid Rock
    • Absolutely (Story of a Girl) by Nine Days
    • Hella Good by No Doubt
    • Hot Mess by Cobra Starship
    • Maps by Yeah Yeah Yeahs
    • Dirrty by Christina Aguilera
    • Ocean Man by Ween
    • Sexual Healing by Marvin Gaye, as a Brick Joke continuing the theme set by I Want You and Freek'n You: "Anytime I need to see your face/I just close my eyes" -> "Every time I close my eyes/I wake up feelin' so horny" -> "And when I get that feeling/I want sexual Healing"
    • Something Happened On The Way To Heaven by Phil Collins.
  • Part 7:
    • Turn the Page by Bob Seger.
    • I'm Gonna Be (500 Miles) by the Proclaimers.
    • A Horse With No Name by America.
    • Running on Empty by Jackson Browne.
    • Wanted Dead or Alive by Bon Jovi.
    • Achilles Last Stand by Led Zeppelin.
    • Country Roads by John Denver.
    • Shooting Star by Bad Company.
    • Old Town Road by Lil Nas X.
    • Hell & High Water by The Allman Brothers Band
  • Part 8:
    • Who Am I by Casting Crowns.
    • Walk on Water by Ozzy Osbourne.
    • Help, I'm a Rock by Frank Zappa.
The Real Reason Star Platinum Got Weaker
It all started when he used it to stop and restart his heart. This caused minor, but irreversible damage to the heart muscle. Likewise, Joseph was dead for a while, before being revived. This explains the severe mental and physical deterioration seen in the latter in Part 4.
If Stroheim had a Stand, it would have been called The Third Reich 'n Roll
The last villain in Jojo's Bizarre Adventure as a whole will be Homura Akemi.
Almost all of her abilities are an almagation of current Jojo Villains, making her the ultimate Jojo Villain. Let's go down the checklist, shall we?
  • Becomes something greater than human like Dio Brando? Check.
  • Is capable of making independent familiars from herself after becoming a Witch like how Kars could create life from himself? Check.
  • Possesses the ability of Time Stands Still like The World? Check.
  • Possesses the ability of "Groundhog Day" Loop like Killer Queen Bites the Dust? Check.
  • Knows how everything is going to turn out before it happens (more due to "Groundhog Day" Loop) like King Crimson? Check.
  • Reaches a heightened state of existence that literally rewrites the universe, as well as stealing/sealing way the powers of magical girls like Madoka and Sayaka like Whitesnake and Made in Heaven? Check.
  • Possesses the ability to go to different timelines like D4C? Check.

Part 9's Protagonist will have a Solar Powered Stand
It could be a perfect excuse to bring Hamon back into the story.

Some Stands and their later forms are the reincarnation of somebody with a close connection to the User in some capacity
  • Particularly the ones that weren't born with their Stands like Polnareff and Kakyoin. I got the idea from this Tumblr post.
    • Hermit Purple: As the Tumblr post stated, is Caesar.
    • Star Platinum: Jonathan. Even though he was long dead when Jotaro was born, he gave himself to Jotaro when DIO returned to finish things once and for all.
    • Holly's Stand: Erina. She wanted to be able to help Jonathan, but she underestimated how frail Holly was.
    • The World: Mrs. Brando. While Dio was pure scum, his mother was one of the few people he legitimately cared about.
    • Crazy Diamond: Josuke's savior. He was cut up pretty badly, and his jacket got mangled so that he could help Tomoko out of the ditch. It wouldn't be hard to believe that he passed out and froze to death in the blizzard.
    • The Hand: Okuyasu's mother.
    • Echoes: Kakyoin. Even though Koichi never met him, they share a few similarities, and Echoes even looks like a pint-sized Heirophant Green. Wanting to be able to help Jotaro again, Kakyoin saw Koichi as a suitable host.
    • Gold Experience: Giorno's savior. Because he was a mobster, it wouldn't be too far off if he was killed by a rival family. While Giorno subconsciously used Gold Experience's ability during his encounter with the man, it didn't fully form until after he died.
    • Spice Girl: Trish's mother.
    • Chariot Requeim: Either Cherry, Avdol, or Iggy.
    • Gold Experience Requiem: Bruno.
    • Purple Haze Distortion: Narancia, or Fugo's grandmother.
    • Stone Free: The man Jolyne was framed for killing. Even though he didn't know her, he wanted justice for both his murder and for the bystander that was blamed for his death.
    • Kiss: Gloria.
    • Burning Down the House: Emporio's mother.
    • Whitesnake: Perla.
    • Made in Heaven: DIO.
    • Tusk: Act 1 is Danny, Act 2 and Act 3 are Nicholas and / or Johnny's mother (either one for each), and Act 4 is Gyro.
    • Ball Breaker: Wekapipo.
    • D4C: Valentine's father.
    • Soft & Wet: Josefumi Kujo
    • King Nothing, Paper Moon King... any of the Higashikata family's stands, really: Johnny Joestar
      • Alternatively: King Nothing: Norisuke IV's mother

Past/Future Joestars
  • Josephine - battled demonic pirates in the 17th century
  • Josef - battled Dragons and wizards in the 6th century
  • Joan - lead the French army.
  • Jordan -battled demons during the Bible years
  • Jonas - battles stand using androids and cyborgs in the 23rd century
  • Joy - battles aliens in the 25th century

A future Big Bad will have a Stand that can slow down time
Continuing the theme of Final Boss Stands having abilities that relate to time in some form, this User can slow down time. Unlike other instances of this trope, where it appears that he has Super Speed, the people around him are fully lucid while time is slow, but are incapable of reacting quickly. The Stand itself can be called Wake Me Up When September Ends.

Explaining the SBR-verse Joestar Birthmark
  • This is going to be a multi-part theory. This will also tie Irene into the SBR-verse.
    • We never actually see Johnny's star-shaped birthmark, so in the SBR-verse, it's actually the Higashikata Birth Mark.
    • Josefumi has the birthmark, despite his lack of connection to the Higashikata family. Sometime after Johnny died, Rina remarried into the Kujo family and had a child. Sadafumi Kujo is her descendant since Josefumi's mother clearly doesn't have the birthmark.
    • The reason why Josefumi's parents got divorced is because Sadafumi had an affair, which resulted in a pregnancy. After the divorce, Sadafumi moved to America so that he could raise his illegitimate daughter, Irene.

Jojo Siwa is secretly a scion of the Joestar family/possibly SBR-verse Jolyne
  • Her stand, Dancing Queen, is covered in many bows.
  • She's clearly one of Dio's children. Dio went to Egypt to work on his plan of achieving Heaven; the name 'Siwa' derives from the Siwa Oasis in the Egyptian desert, most famous as being the place where Alexander the Great was confirmed by an oracle as the divine son of Zeus-Ammon. To say nothing of the blond hair...

A future Part will have a Chinese Zodiac Stand Theme Naming

A future part will have a Greek Mythology Stand Theme Naming
However, unlike Part 3, which used the Egyptian Gods by name, these Stands are named after songs and bands with a relation to the Greek God.

The ultimate irony of Part 6...
In side materials of Part 6, it's mentioned Giorno was in Florida during the events of the part, but never showed up, despite how Pucci stated that 'DIO's sons were drawn together'. Why? Gold Experience Requiem. Its power explicitly makes it Immune to Fate, as it resisted Diavolo's Epitaph. Giorno may have felt the call to Florida, but GER kept him from fulfilling the trip. This means that the only thing that could've stopped Pucci was, by its own design, unable to stop Pucci.
  • Jossed. Araki confirmed Giorno traveled to Florida during the events of Part 6 but just never did anything to Pucci

Dracula himself not only exists in this universe, but he's the Greater-Scope Villain as a whole.

Jotaro is the spiritual reincarnation of Johnathan.

  • Johnathan's spirit reincarnated as Jotaro. DIO is the literal physical reincarnation of Johnathan, being his body. Jotaro is his opposite by inheriting Johnathan's literal spirit.
    • I'd actually say Star Platinum is a manifestation of Jonathan.

Part 9 will take place in either an African country or the black community featuring a black Jojo

If an African country, might take place in South Africa during the Apartheid, and the Amoral Afrikaners present would be a cheeky callback to the Nazis in Part 2. If a black community, most likely Japan's Nigerian community where Part 9 Jojo is blasian and related to Josuke 8, or the United States, to make relating to it easier for a Japanese audience.

Lisa Lisa is still alive

One of the Hamon masters in Part 1 was alive for over 1,000 years. It’s not impossible for Lisa Lisa to still be kicking up until 2012.

For a Change of Pace, Songs/Bands which will never be referenced in Jojo
  • Anything related to Grindcore. Even for a metal fan like Araki I doubt he would enjoy incredibly heavy lyrics mixed with the extremely fast and loud sounds.

Vento Aureo takes place after Made In Heaven reset the universe
Before Made In Heaven, there was no such thing as fate. As such, Rolling Stones didn’t exist because it would not make sense, and Scolippi was just some guy who got killed by a stray attack from Weather, C-Moon, or something made to accelerate by Made in Heaven. Fugo was the one who investigated Leaky-Eye Luca’s death, which lead to Giorno getting killed by Passione, which is why he never shows up in Stone Ocean.But the universe reset changed everything. Fate exists now, so Rolling Stones exists to counteract it. Mista broke the stone, causing fate to change. That is what enabled Giorno’s rise.

The protagonists of Part 9 will be a pair of twins
Their names will be "Jonah" and "Joanna," and they are nicknamed "the JoJo Twins" by their friends. In a form of Sibling Yin-Yang, their Stands will have a Day and Night theme to them. One is stronger in sunlight (which can be an excuse to bring Hamon back into the story), and the others' strength depends on the phase of the moon.

Possible future characters named after music

Hayato Matsuo's Jonathan theme will return in the Stone Ocean anime.
Perhaps Emporio's theme will mainly use the same main instruments from Phantom Blood as a hint, and when Pucci's defeat by that boy occurs, the theme will arrive in full force. This would serve as a perfect full circle culmination by having someone who represents shining justice finally being dealt towards the last vestige of Dio Brando.

The man who made the Stand Arrows out of the meteors was from the Hamon Tribe.
Faced with the threat of the extermination of the Hamon Tribe by the Pillar Men, a particularly scientifically-minded Hamon user sought to create a weapon that would give them an edge. Stealing Kars' notes on the Stone Mask, he sought a way to unlock mankind's hidden Hamon potential. Discovering the space rocks, he fashioned arrows designed to release a spirit made of Hamon from within a human's soul—the Stand. However, since it killed anyone with no potential and worked on vampires, giving them free anti-Hamon measures, the Hamon scholar sealed his creations away until they were rediscovered.

A future part will have a Calendar Theme Naming for the Stands
Whether it be the month, holiday, or common weather pattern from that month.

If the anime goes beyond Stone Ocean, it will NOT adapt Steel Ball Run and JoJolion
The anime has currently adapted five of the currently eight parts of the series, leaving only three accounted for. However, with the manga now in the monthly Ultra Jump, we may need to wait a long time for a proper JoJolion adaptation to be released (if not that, then a potential Part 9).

Rather than wait for such adaptations, David Production could diverge from the manga and create their own Part 7 and 8 made exclusively for TV, possibly within the new universe at the end of Stone Ocean.

  • Alternatively, they could make filler Parts, like Part 6.5 to explain what Passione and the Morioh group were doing at the time of Stone Ocean or Part 7.5 exploring the life of SBR-verse Joseph Joestar.

The anime adaptation of Stone Ocean will be different than the one in the manga.
Given that there are some parts that don't sit well with people, like the fights not onboard with Golden Wind, Stands like Dragon's Dream and Yo Yo Ma, and the ending, the anime could make some changes to appeal to more viewers and, as detailed above, could lead into some anime-exclusive Parts.
  • I hope to god not.
  • Alternatively there could be an alternative ending OVA for the fans that disliked the ending while the series itself uses the original ending.
  • Jossed. The trailer for the second batch of episodes shows Dragon's Dream and Yo-Yo Ma.

The reason Stand users are able to speak their Stand Cries (Ora Ora, Muda Muda, etc.) without running out of breath is because they all have the potential to use Hamon
Early Stardust Crusaders, as well as Word of God that if the Stardust Crusaders time-traveled to part 2, they would see the Hamon users with Hermit Purple wrapped around them, implies that Hamon and Stands are connected. And one of the benefits of being a Hamon user is increased lung capacity. And while Dio can't use Hamon as he's a vampire, it's possible that said vampirism also grants him superhuman lungs.

The main character of Part 9 will be blind
Every other Jojo in the SBR-Verse has some kind of handicap (Johnny being bound to a wheelchair, Josuke's amnesia), so it would make sense that the next one would have one too. Since there have already been handicaps based on lack of body parts and mental handicaps, a sensory one would be the natural progression.

JoJo Lands will take place in the original continuity.

JoJo Lands will feature another Alternate Universe Counterpart of a villain from the original continuity.
Part 7 featured a counterpart of Dio and Part 8 a counterpart of Kira. Therefore Part 9 could feature a counterpart of Kars, Diavolo or Pucci.

JoJo Lands will be cross-continental.
The title could refer to the plot being about chasing after a villain who's hot on the trail of multiple countries to spread their negative influence, à la Carmen Sandiego. From this, the Stand Theme Naming could be based around all seven continents.

JoJo Lands will show the origins of the Devil's Palm and Wall Eyes, while also introducing a new landform that gives out Stands.
The title could be referencing the landforms in the SBR universe that gives people Stands at a price.

Part 9 will not be called Jojo Lands
The announcement specifically referred to it as a "Tentative" (subject to change) title. And it would feel wrong to have two parts, let alone two parts in a row, that have such similar names.

Part 9's protagonist will be a counterpart of Giorno (with a different name)
And the story will involve a power struggle between him and his brothers, who will be counterparts of Donatello Versus, Ungalo and Rikiel. Only this time, rather than being Dio's sons, they will probably be the sons of Diavolo's counterpart (who actually won't be the Big Bad of Part 9, his death being what leads to the power struggle between the four brothers). Also, "Giorno"'s right-hand woman throughout most of the story will reveal herself as the real Big Bad in the final chapters of Part 9, becoming the first female Big Bad of the series.

Part 9 will feature Gappy in some shape or form.
Since by the end of Part 8, its stated that Soft & Wet: Go Beyond can cure her disease & the Higashikata curse, and we don't see this idea fully realized. The new story arc might even go further into the Spin and what that means for Stands in the SBR-universe. He might even meet or become an ally to the new protagonist.
  • Or, alternatively, one of the allies is the child of Gappy and Yasuho.

The grand finale of the entire manga will be a crossover between the old and new continuity.
And the end result will be the Part 6 cast and Jotaro regaining their memories of the events of Stone Ocean which would finally lead to a happy ending for the Part 6 cast.

Part 9 will have a stand called "Uptown Funk" and a stand that is a Billie Eilish Reference
He has stated that they're some of his favorite pieces of modern music.

Irene (Jolyne's counterpart from the SBR universe) is the daughter of Gappy and Yasuho
It's worth noting that, while Gappy has Josuke's name, he's actually the result of a Fusion Dance between this universe's Holly's son (like Jotaro) and the son of the Kujo family (again, like Jotaro). So, basically, he is this universe's version of Jotaro - Jolyne's father.

Yasuho being Irene's mother is more of a stretch, as it wasn't clear if she and Gappy became romantically involved in the end of Part 8 - but it would certainly please the fans who ship them together...

In turn, Irene may be the mother of Part 9's JoJo.

Emporio will appear in Part 9...
... and he'll already be an adult, or even an old man, indicating that the SBR universe has moved past the original universe. He'll be an ally of Part 9's JoJo and may mention that he came from another universe to Part 9's JoJo, but it will be presented just as a trivia, rather than as a major plot point - and no one will believe him (though this part's JoJo will probably pretend they believe in order not to hurt his feelings).

The Part 9 protagonist is the descendant of both Steel Ball Run's Joseph Joestar and his ex-girlfriend
Araki confirmed in a 2022 interview that the protagonist is a future descendant of Joeseph Joestar. In his introductory chapter, he is shown to have a girlfriend who he wanted to treat with the money earned from working for Lucy Steel, only for circumstances to leave him trapped in America and eventually meeting and marrying Suzi Q while they were working for the Steel Ball Foundation. It's likely that his Japanese girlfriend was unknowingly pregnant on the day he left, and the next protagonist will be descended from their child. As Joseph and Suzi didn't have any other children besides Holy, plus with Kei dead and Josuke (who was made from Holy's son Yoshikage and Josefumi Kujo) not mentioned when discussing the future protagonist, this is a likely lineage for the next JoJo.

The JOJOLands' central theme will be the Moon.
Based on this New Year's card Araki created, which also serves as a teaser for The JOJOLands, the thing that takes the most focus is a rabbit. One observed form of New Year's is the Lunar New Year, which devotes itself towards the rotation cycles of the Moon. On top of that, rabbits are commonly believed in Japan to be envoys of the Moon. Combining those two aspects and the fact that Araki had created the teaser for New Year's, it seems to hint towards something lunar being at play for Part 9.

  • It's more likely that the image was simply referring to 2023 being the Year of the Rabbit.

The Main Villain of Part 9 will have a Stand Ability based on the Mandela Effect

The stand of Part 9's Jojo will be called Blackstar
  • First of all, there's the obvious similarities between the Album's name and the name of the people the whole series is about: The Joestars. They're even marked by a Black Star birthmark!
  • Part 9 is likely going to be the Grand Finale of Jojo due to Araki's age, and Blackstar was the final album David Bowie released before his death, with heavy themes of death within.
  • The tagline of The Jojolands, "This is the story of a boy that... comes into a great wealth" can be easily tied back to individual lyrics of Blackstar. "Comes into a great wealth" seems to imply that the protagonist of Part 9 will recieve an inheritance so you could say that the part was triggered due when "Something happened on the day he died". In addition, due to the tagline confirming the protagonist to be male, it is very likely that they are the counterpart to Giorno, since he is the only male Jojo to not have a counterpart in the Steel Ball Run universe. However, since the part seems to be framed around the ocean rather than the mafia, he's "Not a gangstar".