How they Compare: Itachi Uchiha

Itachi Uchiha was born to a world of war. At the age of 4 he saw the world ravaged by the Third Shinobi World War, an event that left him broken and wishing to find a way to end war. Itachi was born a Uchiha, a clan outcasted and hated by their village due to suspicions of their power and their potential role in the Ninetails attack on the village. Itachi was however a hope for the Uchiha Clan. He was a peerless talent, with legendary accolades, surpassing the Chunin and the Jonin before even reaching his teenage years. He was always alone however. Many thought the lonely and mysterious Itachi was alone because his power distinguished him, but it was in truth a disdain for the world of the Shinobi around him, a world of war and death. 

For his talents he was allowed to sit on the highest rank meetings of the Uchiha Clan, finding that they planned to ensure a future for their clan in an uprising. Wanting to avoid this Itachi was a double agent, reporting to the Hokage of what he had seen, hoping they might find a peaceful resolution. However peace failed to win out. Danzo told Itachi the Uchiha planned to revolt and gave him an ultimatum. Join his clan in their uprising, and have them all be wiped out. Or, kill the clan himself, preserving their name and the rest of the village. The 13 year old Itachi agreed because he was given special permission to save one person, the person he cared for most, his little brother Sasuke. And thus Itachi who disdained death killed his own clan. Itachi began his plan there, playing the villain for Sasuke, telling him he did it merely to test his power, daring Sasuke to get strong enough to kill him. Itachi left the village hated and feared. 

From there Itachi would join the criminal ninja group the Akatsuki as a double agent for the Village hidden in the Leaves, secretly protecting them. His plan worked, with Sasuke growing strong and capable out of hatred for Itachi, strong enough to face Itachi, strong enough to create a future for their clan. Itachi died in battle with Sasuke who had grown strong enough to become a leader of their nation. Yet when Itachi briefly from the grave he saw that Sasuke was planning to destroy the village for what they had done to Itachi and their clan, more senseless death, and realized he was wrong. Even as he returned to the afterlife he tried to impact a final lesson to Sasuke, that he had spent his life lying and being alone and that maybe if he had been willing to share his burdens then tragedy may have been prevented, and telling Sasuke that no matter what Itachi would love him always. 

Itachi possess the unique feature of his clan, the Sharingan which are a major feature in his Taijutsu, Ninjutsu, and Genjutsu. The Sharingan are special eyes awoken through extreme emotions divided into the Eye of Insight and the Eye of Hypnotism. The Eye of Insight grants extremely enhanced perception, enough to see through walls, see faint shadows in a heavy mist, and see things on the cellular level. Beyond that it allows most famously the ability to copy techniques it sees as well as see a bit into the future by predicting what will happen based on the current movement of things around, giving power mimicry and minor precog. It also sees through most illusions and can reflect them back on the user. 

Itachi has evolved his Sharingan to the most advanced level, the Mangekyo Sharingan. These enhance all of the prior abilites of the Sharingan and each eye grants an extremely powerful ability for Itachi's usage as well as the Susanoo granted to all Mangekyo Sharingan Users. However because they are not Eternal Mangekyo Shanringan they are very highly stamina draining and slowly drain the eyesight from the user until they go blind. 

Taijutsu which involves physical stats and martial arts skills is probably Itachi's least impressive quality and it's still extraordinarily impressive. For most of the story he is slowly dying of sickness and this Itachi is still considered one of the strongest members of the Akatsuki, to the point of being more then a match for a version of Sasuke that prior easily defeated Sasori, another Akatsuki member. The Akatsuki are a squad of elite criminal Ninja who hit down the Jinchuriki, Ninja hosts of the Biju, Kaiju Monsters made of Chakra. These Biju are capable of vaporizing their surrounding areas and creating mountain sized explosions calced into the gigatons. Itachi is likely in the range of the Kage Onoki who literally carried around Turtle Island and with some help from Gaara stopped Madara's meteor with likely gigaton to teraton level power. All of this is a weak sick Itachi. When he was brought back with his Edo Tensei, he was able to fight KCM Naruto directly who had a substantial amount of Kurama's chakra, Kurama being an an entity that could turn the world to ash and protect the Shinobi Alliance from the Tentails cataclysm calced as being in the petatons level. Even in KCM1 Naruto would likely be in the teraton range, consistent with Edo Tensei Itachi being likely far above his sick dying self who scales himself likely much below the weaker Jinchuriki. Even this was however was stated to be below Itachi at his prime. There's more feats that make this consistent as well.

In speed, Itachi even as he was dying out was able to block the Kirin which is a lightning Jutsu stated in databooks to move at lightspeed, though this is likely in part due to the Sharigan's precog and ability to fight faster opponents. He was still faster then Kakashi who was able to lightning-time even at a young age. Edo Itachi was able to match KCM1 Naruto in speed, albeit Naruto may not have been trying his absolute hardest. This is still impressive as KCM 1 Naruto had just recently shown the ability to outpace even the Raikage, the speedster of the era, who could move at lightspeed, suggesting Itachi would likely be nearing lightspeed. When he was alive, he'd likely be even faster. Itachi was also able to match Naruto in hand to hand skills temporarily, Naruto being so skilled in combat that even in Part 1 he was able to land hits on Sasuke despite Sasuke using the Sharingan to precog Naruto's movements through sheer skill alone. 

In terms of Ninjutsu while most Ninjas only learn one Elemental Release they have particular affinity for, Itachi has learned three of the five elemental styles. He is noted to known Wind Release and Water Release, the ability to create wind and water, able to use wind to increase the potency of fires and through water can shoot out water bullets at light speed or turning them viscous to trap foes. However what he is most known for is Fire Release, creating fire including normal and blue fireballs from his hands or breathed out. 

This is released to one of his two Mangekyo Sharingan abilities, Amaterasu. Amaterasu is said to be the highest level of Fire Release and the Most Powerful Physical Ability of the Mangekyo Sharingan, world ending flames, that scorches all things in Heaven and Earth. It can spawn anywhere Itachi can see, and will burn any target, even other flames or flameproof creatures, until the target is ash. Nothing, even water can extinguish them, and they will burn for seven days and seven nights. Itachi can also create a ring of it as a defensive technique. Given its description of scorching all things in Heaven and Earth, it may be able to hit incorporeal enemies like ghosts. 

Itachi is also highly proficient in both Yang and Yin Release, especially Yin Release and given his master status would likely possess a wide variety of Ninja abilities that are common to the verse such as as adhesion, shapeshifting, and switching his body with other objects. Itachi has actually learned the most famous high level technique in the entire series, Shadow Clone Jutsu allowing him to duplicate himself numerous times creating physical copies.

Itachi also has numerous other forms of clone techniques. In particular Itachi is most famous for his crows which he can summon, seal in other people, and see through. He has a particular technique known as Karasu Bushin no Jutsu where he forms a clone of himself from his crows. This has similar power to a Shadow Clone but requires far less chakra to maintain. 

Like all Uchiha who have awoken the Mangekyo Sharingan, Itachi also has access to the extremely powerful Ninjutsu, the Susanoo. The Susanoo manifests a giant humanoid Chakra Armor around the Ninja, greatly boosting their physical offenses and defenses. With his Susanoo and Amaterasu for instance, Sasuke was able to fight the 5 Kage, the greatest Ninjas of the 5 nations, and Itachi's experience with the techniques were superior to 5 Kage Summit Sasuke. Even then Itachi's Susanoo is special.

Itachi's Susanoo has two legendary weapons. The First is the Totsuka Blade, a spiritual blade that ignores durability and seals whoever is hit inside the Susanoo's jar in a state of drunken dreams. The other is the Yata Mirror, a shield that adapts to the properties of what is thrown at it to nullify incoming attacks, including attacks vastly stronger then Itachi. 

But more then his Taijutsu and even his Ninjutsu, Itachi is known for his Genjutsu, the Ninja Art of messing with their opponents' minds. Most Genjutsu requires eye contact but Itachi has two ways to bypass this. One is that because he can see through his crows, making eye contact with one of them gives the same effect. The other is that Itachi has a special Genjutsu called Ephemeral which he can use just by pointing at his opponent. Most Genjutsu is used for illusory purposes with Itachi's illusions so potent he can make Sasuke believe that Itachi pulled out Sasuke's eye, messing all his senses for an extended period. Itachi's Genjutsu is strong enough that it was believed he might be the source of various agents slipping past the Allied Shinobi Forces' sensory Ninjas across the war and was able to easily reverse the Genjutsu of Kurenai, a Genjutsu specialist back onto her. 

The Sharingan and especially the Mangekyo Sharingan can grant access to the more advanced uses of Genjutsu. This would include such things sending hundreds of people to sleep, inducing paralysis, inducing crippling fear even in people without emotions like Sai, read memories, and inflict massive pain. More then that the Sharingan has been used to control even the Tailed Beasts, giant monsters made of Chakra with which Obito used to control even the great Ninetails to attack the Village though how Itachi compares to this version of Obito in Genjutsu is unclear. Fugaku, father of Itachi and Sasuke believed he could control the Ninetails in the anime, so Itachi may be able too at least briefly.

Itachi also has access to some of the most powerful Genjutsu techniques. His other Mangekyo ability is Tsukoyomi, a Genjutsu so powerful that despite being introduced early in the series, it remains in contention for the best Genjutsu in the series. Tsukuyomi allows Itachi to create a world in the mind of his opponent where he controls everything about the reality and can use it to try and mentally break his opponent. This ability creates an infinite sized mental reality and is a form of infinite potency mental hax, dedicated to causing so much mental strain that the person experiencing it that that their mind breaks. Unlike other Genjutsu someone outside can't break someone undergoing Tsukuyomi out of it as the effect happens instantly from their perspective, with whole lifetimes being able to be lived out in picoseconds. 

One of Itachi's crows also possesses the eye of Shisui which allows him to use extremely occasionally (once every 10 years) the ability of Kotoamatsukami which is a from of mind control that works by incredibly subtlety altering the way a person's minds forms thoughts, so subtle that the target doesn't realize anything is happening at all and doesn't trigger normal mental resistances. 

Itachi has also learned the ancient Uchiha technique of Izanami and likely its counterpart Izanagi. These are abilities that hypothetically any Sharigan user can learn but each one comes with the cost of one of their eyes so are last resort type moves. Izanagi is a Genjutsu cast on oneself that turns events that happened in reality into parts of a Genjutsu illusion instead, blurring the boundary between reality and illusion. It lasts for 60 seconds during which any unfavorable outcome in battle can be rewritten including having been killed which is how Madara escaped his death at the hands of Hashirama. 

Itachi is more known for his usage of the technique designed to counter Izanagi, Izanami. Izanami is a genjutsu technique that takes requires some time to set up but not eye contact and what it does is it causes the people trapped in the technique to undergo an infinite time loop of the events in the set up. Izanami is said to control fate itself and can only be broken out of if the target is able to accept their destiny rather then fighting against it, used to break the strongest of wills by by subjecting them to the infinitude of time that wears away wills.

Along with all his abilities, Itachi is also proficient in all the mundane skills that make a Ninja a Ninja, having completed 340 missions and with even the first Hokage Hashirama calling him a greater Ninja then he. Itachi has a huge suite of impressive feats such as being described as thinking like a Hokage by the age of 7, being promoted to the Anbu Black Ops directly unto the Hokage by age 12, figuring out strategies to defeat Nagato and Kabuto. In the latter case figuring out how to counter Shinra Tensei in seconds and in the latter case Kabuto's Edo Tensei was said to have no weaknesses only for Itachi to say that "every jutsu has a weakness... and the weakness of your jutsu is my existence." Itachi has been praised for his intelligence by many of the smartest characters in the series, was able to manipulate Sasuke over a grand master plan to make Sasuke a hero to the village and bring about the rebirth of their clan, and infiltrated the Akatsuki manipulating them to minimize collateral damage and protect the village hidden in the leaf over the years. He has a high degree of knowledge of the Ninja world, knowing of the legendary Izanagi and Izanami, can quickly analyze his opponents, and even Obito the leader of the Akatsuki thought that Itachi's preparation would have killed him with his post-mortem trap if he knew fully about Obito's abilities.  

Itachi has a mastery of all the normal ninja arts including stealth, sleight of hand, acrobatics, environmental manipulation, pressure point combat, various weapons, and control of one's Chakra. He also has a high willpower, strong enough that he could attack Obito despite Obito's fear aura. 

Itachi was also resurrected by the Edo Tensei along with most of the great ninjas in history during the War Arc. As an Edo Tensei, Itachi is a regenerating zombie ninja. The regeneration is on a low-godly scale with an Edo Tensei able to come back from complete destruction of their body so long as their soul still exists. Usually Edo Tensei are controlled by the caster of the Jutsu, in this case Kabuto, but Itachi though preparation used the Kotoamatsukami on himself to slip out of the control of and eventually defeat Kabuto himself. This form is particularly helpful for Itachi as is it mitigates his biggest weakness. 

Itachi's major weakness for most of the series is his lack of stamina. Not only do his most powerful techniques take a lot of Chakra, but over the series until his final fight he was slowly dying of a disease that gradually eroded his physical capabilities, his stamina in particular. This is compounded on how many of his techniques are focused around defeating one opponent very thoroughly, causing him to have more difficulty fighting numerous opponents at once. However this weakness is less potent in his Prime in Part 1 when he wasn't suffering from the disease or in his Edo State as Edos have seemingly infinite chakra. 

In addition, he has many of the common ninja weaknesses. His powers come from his Chakra and his Sharingan, and if he is drained of chakra, he only has his passive Sharingan abilities to rely on. Taijutsu requires melee range for the most part, Ninjutsu requires hand seals to use, and Genjutsu usually requires eye contact, though Itachi's ephemeral is activated by pointing instead. Also most techniques have balancing drawbacks such as the Yata Mirror which can block any attack but is unidirectional meaning once again, multiple opponents or other multi-directional attacks can get past it

Name: Itachi Uchiha, Itachi of the Sharingan

Origin: Naruto

Powers and Abilities: Kage+ Ranked Naruto Ninja Abilities, Enhanced Vision, Technique Mimicry, Illusion Negation and Reflection, Elemental Manipulation (Fire, Water, and Wind. Can also summon the black flames of Amaterasu), Duplication, Animal Manipulation (Crows), Can summon a Chakra Armor Mech (Susanoo), Sealing (Totsuka Blade), Attack Reflection (Yata Mirror), Non-Physical Interaction Totsuka Blade and possibly Amaterasu), Mind Manipulation with Genjutsu (Various Forms including Illusions, Mind Manipulation, Emotion Manipulation, Memory Manipulation, Sleep Manipulation, Pain Inducement, and Paralysis Inducement), can trap his opponent in an infinite mental reality that Itachi controls to mentally break them (Tsukoyomi), Subtle Mind Control (Kotoamatsukami), Reality-Warping (Izanagi), Fate Manipulation (Izanami) | All of the Prior, Low Godly Regen, Zombie Physiology 

Weaknesses: Dying and Relatively Low Stamina in Part 2, individual techniques have various drawbacks such as most of his Genjutsu requiring eye contact, tends to hold back as he hates conflict and killing

Attack Potency: Island Level when weakened, Country Level in his Prime or with the Susanoo | Country Level

Range: Several Kilometers normally (Can affect things in his visual range), Higher with some techniques like the Susanoo

Speed: FTL Reaction/Attack Speed. FTL Movement Speed in his Prime, Sub-Relativistic Movement Speed when Weakened. | FTL

Durability: Island Level when weakened, Country Level in his Prime or with the Susanoo | Country Level

Stamina: Superhuman in his Prime, though diminished when he was sick | Superhuman, possibly Infinite (Edo Tenseis are said to have infinite chakra, though this is seemingly contradicted later)

Intelligence: Upper Genius Level General Intelligence (Regularly demonstrates incredible feats of intelligence in numerous categories), Low A Tier Combat Skill (Scales to superhuman combat skill, briefly matched KCM Naruto in Taijutsu)

Key: Alive | Edo Tensei

So if Itachi was given missions to assassinate targets in other universes, how would he do?

Kishomoto's main artistic inspiration in the writing of Naruto was the world of Dragon Ball, so how would Itachi do in the Dragon Ball World. In raw power regardless of the form of Itachi he doesn't do that well with Max Power Roshi in original Roshi able to destroy the Moon, and even suppresses with a power level of 120 able to vaporize Mt Fry by accidently with the Akatsuki arguably around this suppressed Roshi in terms of attack potency. In terms of speed if you don't think the arguments for early Dragon Ball being lightspeed apply from how Goku had to improve to reach lightning speed nearer to the end of Dragon Ball, with them only clearly reaching the FTL range in the Saiyan Saga, particularly with the Sharingan's Precog allowing users to fight people notably faster then them. 

While Itachi has some good defenses in the Yata Mirror and the Edo Tensei regen there the capacity to protect from the planetary+ ki attacks get increasingly questionable, as such for the most part Itachi vs DBZ characters really just depends on if he is able to make eye contact before they blow him up. This would actually work on at least some characters who are prone to speaking or boasting before combat though obviously at some point Itachi is too slow for them to wait for him to react. Something like Tsukuyomi could probably still incapacitate characters from Dragon Ball Z and he could then seal them with the Totsuka blade or fry their brain. He could also protect at least temporarily from dying with the Izanagi though this would be a very temporary defense if he was severely physically overpowered.

For the most part Itachi has the speed of a Saiyan Saga characters and could defeat most characters in the single digit thousands of power level via hax despite his relatively low attack potency, or possibly characters much stronger if they allow him to make eye contact, but could quickly get overwhelmed by DBZ's speed increases or by numerous characters fighting him at once. 

Bleach is one of the original Big 3 with Naruto compared to it all the time both in powerscaling and otherwise. However Bleach's scaling is definitely one of the most contested in terms of Shonen verse scaling. Generally speaking though in terms of Soul Society ranking I think it's mostly consistent for Itachi to be considered Lieutenant Rank when he's sick, and Captain Rank in his Prime. Being an Edo wouldn't particularly help since everyone in Bleach is a Shinigami or something similar that hits souls but in terms of general capacity. The Lieutenants in Bleach have feats of light-timing albeit with difficulty and from some distance, which is fairly reasonable to compare with Itachi being able to react to Kirin a lightspeed attack from a similar distance while dying in his fight with Sasuke and to feats of Early Soul Society Arc Ichigo and friends blocking a shot from a cannon that shook the entire soul society, and early Toshiro creating a storm casually with his attack that extends over a wide space calced also into the megatons to gigatons range, similar to the feats of the Biju the Akatsuki have to apprehend. Itachi should be able to keep up in speed with Captain Tier characters that are an order of magnitude faster in the FTL range arguably even when sick via the Sharingan and definitely when he was in his prime.  Their power unless lowballed probably does start to eclipse him as the Captains are around Soul Society Ichigo's level who blocked the Sokyoku execution blade that is stated to have the power of 1,000,000 Zanpakutos while Itachi is more like thousands of times stronger in his prime by feats, and is a threat to the Soul Society itself and while Ichigo doesn't scale fully to it, he does scale to a portion of it which even just talking about the planet, would be more akin to the level of the full Ninetails.

With that said however Itachi should still be a threat to Espada and Captain Tier characters in his Prime or in Edo as he has relative speed, possibly somewhat relative power and broken hax, though he'd have a lot of interesting interactions with the verse. His Totsuka Blade is a Spiritual Weapon much like Zanpakuto and it's likely the two could parry each other. He has numerous forms of Genjutsu that should likely work though many characters in Bleach use sentient weapons such as the Zanpakutos that can potentially snap them out of a regular Genjutsu similar to how Ninja Teams break each other out of Genjutsu in Naruto. On the other hand characters in this tier can probably have their attacks blocked by their Yata Mirror meaning in a one v one Itachi can block attacks from Captain and Espada Tier threats.

Itachi's strongest Genjutsu are possible win cons though it depends on if his opponent is more like Ichigo, Grimmjow, and Byakuya, who are melee fighters who are prone to getting close and making eye contact or ranged fighters like Stark or Uryu who would just shoot at Itachi from a distance which he'd have to use the Yata Mirror to block. Itachi broadly has a very strong arsenal of abilities compared to most of the fighters in Bleach having a wide arsenal of broken techniques. However he also has more weaknesses as much of his techniques have drawbacks and he has a basically normal human body and mind that is being amped such that things like being worn down and exhausted by spiritual pressure or his opponents regularly being able to fly around and even teleport through dimensions being things Itachi is somewhat limited against. Overall he does pretty well, better then most Naruto characters due to his fighting style but is far from OP. A possible Nightmare Match for him is Espada 2 Barragan who regularly leaks an aging aura around him that would probably decay the chakra flow Itachi would use to try to cast Genjutsu and even if Itachi summoned Amaterasu on his position, the flames last for 7 days and nights while Barragan believes he could decay even the stars with a lifespan of billions of years instantly so Itachi may lack a win con entirely.  

What about in One Piece, the other of the ol Big 3? In terms of power, Franky was able to withstand a mountain dwarfing explosion. Not only was this calced into the gigatons range but is visually comparable to Sasuke's destruction of the Uchiha Hideout across a mountain with this Dying Itachi being stronger then Sasuke at the time. This is consistent with a few higher gigaton level feats early into the timeskip of Elizabello and Chinjao fragmenting the arm of a massive stone golem Pica, with Chinjao at the time being around the strength of Second Gear Luffy. This means in power even when weakened from sickness Itachi should reach around the level of the Vice-Admirals and could contend with the most of the Warlords. His Prime would be more around the level of Timeskip Zoro and Gear Four Luffy who were able to slice Pica in half entirely showing a substantial increase in power calced as teraton level. In terms of speed a lot of the One Piece cast have relativistic to FTL reaction speeds similar to Itachi though in terms of movement speeds Kizaru's ability to move at lightspeed is considered a massive speed cliff for the verse with Luffy only recently eclipsing him with Gear Five, meaning that while there are numerous characters Itachi can't blitz, he can easily react to pretty much anyone in the verse and in his Prime would have movement speed comparable to the top tiers. 

Itachi has a lot of advantages when fighting One Piece characters. Devil Fruit Users are elemental enemies but Itachi's powerset broadly doesn't care about it with Amaterasu able to burn anything in Heaven and Earth, the Totsuka Blade being a sealing spiritual plane sword, and Genjutsu being mental techniques. Furthermore Devil Fruit Users are weak to water with even a bath depowering them and one of the Elemental Releases Itachi knows happens to be Water Release and with the Genjutsu's ability to read memories, Itachi can find out about this fairly quickly. Observation Haki's ability to sense presences and see the future is similar to the sensory abilities of the Sharingan while Itachi has the Mangekyo Sharingan, equivalent to the sensory abilities of Mastered Observation Haki and Conqueror's Haki which allows the mentally overwhelming someone of a weak will is going to do nothing to Itachi who had a strong willpower even as a boy and can easily reverse most Genjutsu tried to be used against him. With the ability to one-shot anyone in the verse and top tier speed Itachi would be an immense threat one v one against anyone in the tier, even characters with raw power much higher then him like the Admirals who scale to Whitebeard threatening the One Piece world.

That said One Piece does have a few advantages against him. Armament Haki allows the attacking of internal organs which is treated as a super strong ability in Naruto, bypassing most forms of defense, and could be argued to perhaps be able to get past the Susanoo armor. This means Itachi would could be OP but a bit glass cannon-y. Also characters tend to travel in large groups meaning it's possible to wear down sick Itachi. An interesting match might be Itachi vs the Strawhats early to mid post-timeskip as they'd have numerous fighters that can physically pressure Itachi but would have never gone against someone with such a broad and potent suite of hax. 

My Hero Academia is one of the new Gen Shonen that got most compared to Naruto so how would Itachi if placed in the My Hero Academia world? Even when weakened, Itachi would be one of the most powerful capes in the setting in raw stats, as even when dying Itachi's raw power was still in the range of the Biju who would have a large amount of the power of Stars and Stripes' two gigaton level calcs of splitting the sky with Itachi and his speed is able to react to lightspeed attacks akin to some of the fastest things in the verse. In his Prime or as an Edo Itachi would be an endgame threat. While his power does get eclipsed by the top tiers like Deku's Final Smash reaching double digit teratons from changing the weather across the planet, his power with Susanoo or in his Prime would be up there. Itachi in his Prime also has arguably better FTL scaling then anyone in my Hero meaning that Itachi would be an absolute top tier physically, probably on the level of Modern Day All-Might, someone most Heroes consider the pinnacle of power.

This is a problem as Itachi has a vastly wider arsenal of broken abilities then almost anyone in my Hero save perhaps for Shigaraki. Physical powerhouses like Deku or Bakugo should be able to break through Susanoo pretty easily as Tsunade was able to break through Madara's. And while this does mean they'd have to get close enough for Itachi to trap them in a Genjutsu users of One for All can fight off mental attacks shown by Deku's fight with Nighthide and the two Symbols of evil. Itachi's more advanced Genjutsu however would pose a threat as would the Totsuka blade's sealing. It would be much safer for them to engage Itachi with a team which would likely go much better. If it's Edo Itachi they'd also need a way to kill him though All-Might was able to fight an enemy of pure energy which might allow him to hit Itachi's chakra directly, or they could rely on help from someone like Eraser Head who if you use verse equalization might be able to negate the Sharigan altogether as it is a genetic ability of the Uchiha clan. 

However more likely is Itachi fighting the villains and most villains at least one by one would not be a threat even to a Sick Itachi. Against Prime Itachi it would take likely a team to beat him though Overhaul would be a valuable asset if he can suck Itachi's chakra level (though Kisame can do this as well and admits inferiority to his teammate Itachi so Overhaul probably can't 1 v 1.) The only villains I think could beat Prime Itachi 1v1 are the the two Symbols of Evil All for One and Shigaraki, and even then it's arguable. Neither of them have the mind hax resistance to protect against Tsukuyomi and while the Rewind quirk would undo Genjutsu by reversing their body to before Itachi's chakra entered their mind, the point of Tsukuyomi is the effect happens in an instant and fries the mind through mental trauma. Similar they lack the sealing resistance to deal with being hit by the Totsuka Blade. That said the Decay Quirk can probably eat through the Susanoo like Mei did with her Vapor Style Jutsu and they have enough raw power to just overwhelm him. I think Itachi would have a decent chance against either of them. 

Finally outside of anime, Star Wars is a verse that's had numerous comparisons with Naruto due to some odd parallels, so how well would Itachi do if he entered the Star Wars Galaxy. This depends on both canon and Itachi's status. In the Disney Canon most High Tiers Force Users scale to the feat of Knights in the High Republic being able to stop Hyperspace Emergencies that can destroy Moons or highly damage their surface, these events varying from high end city level to outright moon level with continental being most common. Itachi doesn't quite reach that high so would be more akin in power to upper mid tier force users, such as A New Hope Luke Skywalker and who's power would be notable but not a serious threat to the major force users of the OT like Darth Vader and Obi-Wan. In the Legends Canon where planet level power or higher is common among the Jedi, Itachi even in his prime and with a very high end interpretation is probably not getting anywhere substantial on raw power. In terms of speed however, most of the verse in both canons scale from laser-timing, with Legends Canon having high upscaling from it. Itachi would be able to compete in speed quite handedly in the Disney Canon and if it was Prime or Edo Itachi he might actually be notably fast compared to most characters. In the Legends Canon where there is higher upscaling with even mundane warriors able to light-time and the strongest characters scaling to massively faster then light, Itachi would have a more normal Jedi/Sith speed.

Of course the real reason to put Itachi in the Star Wars universe is that Itachi is one of the most famous psychics in Naruto and Star Wars is one of the most famous psychic-verses in fiction so it's really a matter how their psychic powers compare. Both have mind manipulation, illusions, and paralysis as well as the ability to resist and the ability to enhance their reactions. A Force User has the advantage of better sensory abilities, the ability to erase memories as opposed to just reading them like both can do, and more helpfully telekinesis which would be especially helpful as it could affect him through the Susanoo. On the other hand Itachi would have high tier fear manipulation on the level of a powerful Sith, more reliable precog, sleep manipulation, and can copy techniques. He can also induce pain though for a Dark Side User that would make them stronger. This isn't getting into his more esoteric abilities like reality-warping and fate manipulation. All this is to say that I think if Itachi fought a Sith like Darth Maul in Disney Canon, Maul would be able to sense him pretty easily, but Itachi would have a high degree of speed and skill along with mind, an combined with ways to one-shot him, I think Itachi would do quite well especially as an Edo where he not only might have a power advantage but also a regenerating body where a lightsaber slash of telekinetic crush wouldn't do any permanent damage. The hard stopping point is Darth Vader who he can't use any Genjutsu except Ephemeral on because of Vader's visor that prevents eye contact. He could still try to use the Totsuka Blade but Vader can just telekinetically throw him back and unless he'd an Edo, crush him telekinetically. If Itachi is an Edo it would be a lot harder for the Disney Canon to do anything permanent to him as he has the will and Sharingan to resist mind manipulation and his body regenerates from complete destruction though in the comics they've shown the ability to affect ghosts with the force so they may be able to hit his soul afterwards. It's very likely he could defeat someone powerful but with psychological weaknesses like Kylo Ren through manipulating them with Genjutsu while setting them up to be sealed by the Totsuka Blade, hit with Amaterasu to burn them to death eventually, or get eye contact to put them in Tsukuyomi. Overall he'd be a very high tier threat, with a modest power level but good speed and top tier abilities mostly from being esoteric and unlike what people can counter. This is especially because Jedi and Sith usually travel in pairs or by themselves, which means they really can't take much advantage of Itachi's primary weakness. 

In the Legends Canon it's a lot worse for him, his stats being relatively low tier held up by decent speed and that canon having way more abilities to scale including all of Itachi's normal abilities. Itachi's stronger Genjutsu would still be a threat though he would be only roughly middle of the road in terms of threats, being a threat to a Force User if they make eye contact and he uses Tsukuyomi though given their danger sense it's likely they would know not to and they absolutely don't need to use their eyes to fight him given that they primarily fight via Force Sensing. Against powerful mundane warriors like General Grievous Itachi probably couldn't rely on his Genjutsu considering he exists in a world of Powerful Psychics though it might take him a sec to get through the Susanoo armor and if Itachi is an Edo he might have trouble killing him at all and Itachi can still try and seal him with the Totsuka blade, a spiritual plane sword he probably can't block. That said he'd probably really struggle to fight Mid Tier and up Force Users especially Dark Side ones that can often drain energy from Living Itachi's rather finite pool of it. 

DC Exploration: Allura

Who is She?

Allura is the "greatest foe" of the Golden Age Superhero Zatara and the first villain his daughter Zatanna had to fight alongside the Justice League, intimately connected with Zatanna's origin. She is my favorite of the Zatanna villains and so imagine my excitement when she was revealed as the villain of the 2025 most recent Zatanna series, her first appearance since DC Special in the 80s. 

Sindella, one of the Homo Magi and mother of Zatanna, found a good princess being fed on by a dark spirit and to save the princess' life banished the spirit to the darkness. This spirit hated more then anything to be trapped and stirred in resentment. When she escaped she sought vengeance but without Sindella there, she instead attempted to take vengeance on Sindella's husband and daughter, taking Zatara from Zatanna and unwittingly starting Zatanna's superhero career in her quest to find him. 

Allura is a "Mistress of the Dark Elementals", a spirit being that represents something ephemeral. In particular Allura is connected both with lies/deception and being stuck in the past. While Zatanna's journey has always been one of moving past the tragedies of yesteryear, Allura is motivated by past resentment. 

How Strong is She?

As a minimum, Allura was considered Zatara's greatest foe and one even he could not defeat unaided. This would include a whole bunch of Homo Magi Tier threats as well as The Rip, one of the Otherkind like Upside-Down Man who Zatara and Sargon originally defeated. These Otherkind are strong enough that they could somewhat assist Upside-Down Man with a full on scale invasion of the Multiverse from the Dark Multiverse. 

Even in the original stories, Allura is definitely above the level of a normal Homo Magi, though the level is unclear. In the original storyline Zatara was unable to beat her himself and it required the original Princess, a good elemental that was her equal opposite to stop her. While she was incorrect, Zatanna thought Allura was the one who infected the city of Homo Magi with a magical diseases, showing she believed she was strong to override all of their magical defenses. Zatanna needed the Justice League's help to save her father from Allura. The newest Zatanna series shows Allura to not have been power cliffed. In the newest run Zatanna got help from the Justice League Dark, with Allura fighting both Wonder Woman and Zatanna individually as of 2025 and them only getting the best of her due to basically type advantage Wonder Woman using her nature as spirit of truth and Zatanna using her magic specialty. Even then Zatanna still only won due to one of her newer villains The Lady White turning against Allura and aiding Zee against her.

She's definitely more powerful then any other Zatanna villain save Xaos, Mammon, and Zor. Compared to them I think she's probably stronger then Xaos who was trying to break down the Earth/Darkling Plane yet Allura can go to any mystic plane she wants with Xaos being more like the Otherkind conceptually. While I think she'd probably defeat Mammon indirectly, whether she could overpower him directly is a bit more questionable. Zor I do think is probably stronger then Allura, even if she still might win via trickery. Compared to other Magic Villains in DC's Roster, Allura is an underrated beast. She doesn't have many appearances and feats, but what she does have suggests she can contend with Wonder Woman's stronger rogues like Circe and Queen of Fables given their relative performances against Wonder Woman and Zatanna. 

What are Her Powers?

Allura is Dark Elemental, a spiritual being made of pure negative emotion who parasitically latches onto others and causes a whole bunch of effects. She can steal souls, fill someone's minds with lies, possess people as strong as Zatara and more. She has shown the ability to change her size and appearance at will and is broadly immortal subsisting off peoples' memories and magic. 

Allura is also a powerful magic-user who's magic gives her a broad reality-warping. Most famous example is she cursed Zatara so if he contacted Zatanna directly or indirectly Zatanna would die, starting the arc of Zatanna searching for her first and beginning her superhero career. Allura created a dimension where she controlled the rules such as her declaring that Homo Magi magic doesn't work. She was able to make illusory environments so well that she said no person before Zatanna had ever seen through it. She described herself magically spying on Zatanna for weeks keeping her from reaching Sindella and the other Homo Magi before binding Zatanna with "tendrils of nothingness" that drained the heat and life from her and teleporting through dimensions away. In the new series she shows a bunch of new magical abilities including spatial destruction/portal creation and soul stealing. Basically she is a classical magical do anything type reality warper. 

The new series also showed her getting a new piece of equipment in the Laevateinn, a magical spear made from a piece of the tongue of Loki representing pure lies. Stabbing someone within it traps them in an illusion of what binds them to the past and splinters their soul into infinite pieces unless they're able to move past the things that hold them back. Also while not a power per se, she's also arguably the craftiest of Zatanna's villainess, one of the few who have ever mentally gotten the best of Zatanna, and completely duping Lady White with a sob story of how Sindella actually was the villain in their fight. 

What are Her Weaknesses?

So Allura's classic weakness is that she can't exist in the physical plane without a body that she has to possess and if exorcised from it must find a new body or escape back to a magic plane. She like a lot of other spirits also seems to have a general weakness to being sealed away so long as she doesn't have a host body. Both Zatara and Zatanna have defeated Allura originally by forcing her out into the open and sealing her away, Zatara in the Sword of Paracelsus and Zatanna inside a bottle. 

Allura also has a habit of her own things being used against her. In her third appearance even though Allura set the rules for her dimension, Zatanna was able to use those same rules to win, and in the fourth and latest appearence Zatanna was able to get and use the Laevateinn on Allura. While she has lost in all these, it is somewhat notable that in all four cases, she lost to some combination of an exact equal good duplicate of her, her specific weakness, or her own powers used against her without the powerful Homo Magi ever just defeating her in a bout of magic power. 

In conclusion, Allura is easily one of Zatanna's strongest foes and on the upper end of Justice League Tier given that she was able to fight Current Wonder Woman and Zatanna separately and even prior to this was a considered a threat on par with the Silver Age Justice League and an entire city of Homo Magi. She'd pretty clearly beat most of Zee's other villains. She beat Brother Night directly, and would be above Nimue Ravensong regardless who was below Brother Night. Lady White would likely lose one v one as it took her and Zatanna working together to defeat Allura with the Laevateinn. The Pre-Crisis Powerful Magic Users like Warlock or Druid, it depends likely on what realm they're in as if they're in Allura's realm she should easily win and if she's in their realm they'd likely win, though on  a neutral battleground Allura definitely has more hype in power, has shown more broken abilities, and shown more cleverness. 

Compared to Zee's more powerful enemies like Mammon, Xaos, or Zor, I do think Allura might be outgunned in raw power outside of questionable scaling with the Otherkind, that said it's not inconceivable to win as I think she's craftier then them, and the Laevateinn would be a pretty nasty weapon against any of them. She's also shown better abilities then either Mammon or Xaos and Xaos is pretty comparable in nature to one of the Otherkind and was struggling to make a connection from the Darkling plane to Earth while Allura can travel to "any" mystic plane with ease, which gives me the impressive that Allura could beat Xaos. 

Against most of the non-magical characters on her tier, Allura would be an extremely broken type threat given the difficulty of fighting her and her ability to bring people to a magic dimension she controls the rules of or possess and siphon the soul from those with a body to possess. She'd also do already against magic users on her tier especially if she can manipulate them like Circe, or they don't have a lot of powers that work on a spirit like Anton Arcane. Enchantress might be an interesting fight for her as Allura probably has the raw power advantage on Enchantress though she probably can't possess Enchantress given she's already possessed. Enchantress has shown a lot more abilities though they are both broadly reality-warpers who can do much so I think it would depend on if Enchantress can outhink Allura. 

How Strong was Start of Series Danny Phantom

 

It was suggested I make more of these how strong was X Protag at the start of their series based on others of my favorite series and I agreed with the idea. The next one I decided to do was Danny Phantom and Danny's early scaling is a bit harder then early Usagi's scaling as Danny Phantom is implied to train off screen and gets vaguely stronger, so we don't really know how what feats are applicable to him this early on. This is compounded by the fact that Danny's powers do rise and fall based on his will and emotional state going from losing heavily to the Fright Knight to outright overpowering him mid sword swing. However even as of Episode 1 he should scale to some of the more basic ghost feats.

Ghosts in Danny Phantoms have their own realms including someone like Sydney Poindexter who's realm included a school building. These realms seem shaped to the Ghosts nature with Sydney's being an old timey school and is suggested by outside sources as being shaped by them. Given their school is large enough that "200 yards" is considered easily within the school's bounds, this would pretty easily put this at a city block level feat that even Episode 1 Danny should scale to as Sydney is not considered strong at all by ghost standards it seems. This is somewhat consistent as in the first episode Danny hits the Lunch Lady Meat Monster, a large building sized monster with enough force to crater the ground calced at 737 tons of TNT or Multi-City Block Level though the force is enough to make him tremble as he crawls out of the crater. There's an argument he should be stronger based on downscaling from later feats, in particular that Skulker's realm is an entire island and Skulker is actually a small weak ghost inside a power armor suit, though as his suit is ectoplasmic, it could be argued that it is part of him? 

Speedwise, Danny even in this early section of the story is likely relativistic in speeds downscaling from later FTL feats like the Spectre Speeder traveling from Saturn to Earth comfortably within a day and Vlad Plasmius thinking he could become a free-floating space nomad. Both are faster by Danny and maybe by hundreds of times or thousands of times for Vlad, but the gap is not likely to be higher then that. Being relativistic is also consistent with other depictions of Ghost Rays being like lasers and moving at lightspeed, as well as the fact that even in Season 1 Danny regularly had to keep up with Johnny 13's shadow which is literally a shadow and plausibly moves at lightspeed. 

In terms of abilities, Danny has numerous of his ghost abilities though many are yet to be developed by Episode 1, with him only accepting himself as the protector of Amity Park at the end of the first ep. Still he has access to invisibility, intangibility, and flight as the distinctive ghost powers, though the former two he doesn't seem to have full control over. He can also phase other people or objects invisible or intangible at will as he does to phase a dumpster so the meat falls on Dash. 

Danny also shows impressive body malleability stretching his body drastically in his ghost form and would still have ghostly regeneration, enough that his body being splattered into goo would only phase him. He would naturally have resistance to many abilities commonly had by Ghosts as well as a ghost sense.  

He would also still have his powerful will that lets him overpower possession attempts and grow stronger in times of determination. How much stronger isn't super important, just that it's vastly beyond his normal tier, though for context, it allowed him to overpower the Fright Knight who was causing a global storm, a country level feat. Some people argue the verse is much higher, but once again, not super relevant for this unless you think Episode 1 No-Training Danny also scales to a cosmic tier. Danny might be able to access his other powers accidentally. In Season 1 he had a tendency to unlock powers basically by accident including his overshadowing and energy projection though without knowledge of them it's unknown if they would apply.

Obviously this Danny's weakness is he has little control of powers, even accidentally de-transforming once mid-combat and has no combat training and little combat experience. While he proved himself capable and a fast thinker befitting of coming from a family of Ghost-Hunters, Danny is still inexperienced with his powers and mostly fights conventionally with some added benefits of his major ghost powers. 

So overall Danny in the First Episode is probably multi-city block level with the potential to rise billions of times stronger with likely relativistic speeds, superhuman willpower, regeneration and body malleability, an inconsistent ability to use intangibility, invisibility, and flight, the potential to use a much wider variety of ghost powers he's unaware of, and some more minor abilities such as adhesion and ghost sensing. 

Against other Cartoon protags of the time Danny unfortunately wouldn't do very well as at the time it was very common at the time for most cartoon characters to not change that much or get much stronger over their series meaning it would be Episode 1 Danny vs essentially EoS versions. For instance if he fought someone like Episode 1 Spongebob, Timmy Turner, or Jimmy Neutron he'd mostly just be fighting their end of series versions but with less experience. Characters like Aang and Robin from Teen Titans would be more interesting as they're in mostly the same physical range. Robin is similarly fast and a few times more powerful going off several low kiloton level feats in Teen Titans but wouldn't be able to get through Danny's regen assuming he can maintain his ghost form with Danny being able to wear Robin down or if he needs to get tap into his willpower or possession. Danny vs Aang, Aang should have similar or higher attack potency via his bending though Danny should have notably higher physical stats and both can tap into a much higher power level temporarily. 

Against the newer cartoons where some of them tend to be more grounded in their stats, and there's a lot more focus on progression, Danny would be a lot more interesting. Vs Luz from TOH for instance, Episode 1 Luz might unironically scale to similar physical levels to Danny based on some city block to town level feats in TOH and light-timing, though Episode 1 Luz has no magic. Similar for someone like Anne from Amphibia. Finn the Human would have more abilities but Episode 1 Danny seems to have substantially higher stats. 

Outside of that, Episode 1 Danny would be pretty strong in most non-cartoons going up against start of series versions. Episode 1 Goku and Naruto would absolutely be taken down outside of a chance transformation into Oozaru or Kyuubi Chakra form, though as mentioned Danny can himself access much higher level of power with determination. Episode 1 Yusuke Urameshi is a normal ghost, something Danny is especially suited to beating. Episode 1 Luffy and Ichigo might scale to similar or a bit stronger, but not so much stronger that Danny can't use his superior speed to defeat them. Episode 1 Yugi has hax that can definitely beat Danny, especially if they engage in a game of darkness, but in a conventional fight Danny can probably blitz and hit him. Even some other more powerful Shonen/Seinen series alongside Dragon Ball, things Saint Seiya and Bastard!! while Seiya and Dark Schneider start more powerful then Danny and probably win, they definitely don't start as fast with Danny being possible able to pull a win just from getting very determined. While his power level doesn't look that impressive nowadays, the combination of speed and some honestly pretty potent abilities means that Episode 1 Danny would actually be a bit of a beast in crossverse episode 1 matches. 

How they Compare: The Nothing (Cardcaptor Sakura)

 

The Nothing is the antagonist of the second Cardcaptor Sakura movie, the Sealed Card, and possibly the most powerful villain in the Clamp multiverse, with the only competition being Fei Wang Reed. When the greatest magician in history Clow Reed created the 52 Clow Cards as expressions of his power, he had to create a negative power to balance them, the Nothing. The Nothing's power was dangerous as while the other Cards caused an affect, the Nothing unmade things. Anything that came into contact with it disappeared and so Clow Reed sealed it away.

Centuries passed and a descendant of Clow Reed named Sakura Kinomoto broke the seal upon the Clow Cards, freeing them. She would slowly collect them and change them to be her Sakura Cards. However this transformation combined with the mansion of Clow Reed being destroyed unsealed The Nothing. Released again into the world, the Nothing was terribly lonely, the only friends she had ever had being the Clow Cards who she felt Sakura was stealing from her. She attempted to take them back accidentally causing the disappearance of Sakura's loved ones.

In terms of power, Clow Reed explicitly put all his power into making the Clow Cards, and the Nothing is the exact equal and and opposite of them meaning she should scale to Clow Reed himself. Clow Reed in Tsubasa Resevoir Chronicles was revealed to have accidentally suspended the laws of death across the entire multiverse, shifting the entire thing, on accident, due to a fleeting desire to see the dimensional witch open her eyes one more time. This means The Nothing would be Multiversal in power. 

In terms of movement speed, several Clow Cards would logically move at lightspeed including The Light, The Dark, and The Shadow, with the Dash being faster then all them. As the equivalent of all 52 Clow Cards, The Nothing should thus be FTL. Her reaction speeds are likely far higher as much weaker characters like Yui and Clow Kingdom Syaoran reacting to magic that can quickly encompass a universe and the multiverse respectively, the latter magic that is stated to surpass space and time. 

The Nothing most famous power is the reason it's so feared. Everything that comes into contact with her ceases to exist. This makes attacking her very difficult as any attack that comes into contact with her ceases to be. She can also disappear things from a distance as she did to cards on the top of Sakura's deck as she slept, and can open bubbles of erasure at will that were able to encompass large parts of buildings. This had no problem erasing someone like Fujitaka who had of Clow's magic within him, which had prior made him completely immune from Eriol's sleeping spell. This erasure can affect physical things as large as "buildings" at once according to Eriol and can affect non-corporeal things like memories, spaces, and the Clow Spirits. An example of this is when Sakura tried to stop time against the Nothing, not only was the Nothing unaffected, but the time stop quickly ceased. Eriol refers to this effect as "un-making" it, the opposite of the Clow Cards which case something to happen. As The Hope she was able to also undo this effect, restoring things from nothing. 

The Nothing has shown several other shown abilities. She can naturally levitate and teleport. She was able to sense Eriol talking to Sakura about her and erased the phone line showing some extrasensory perception. She showed telekinesis strong enough to move amusement park rides. Magic Users in Clamp have a resistance to magic lesser to then them and as a being made of the Negative Energy equal to all the Clow Cards, The Nothing has Multiversal Level Magic and Magic Resistance. 

While it's arguable if she should have this and whether it counts as standard equipment, during the film The Nothing steals away Sakura's cards and can potentially use their powers making her a mirror for Sakura's own powers just without her ultimate spell, that of Hope. This would hypothetically give her access to a vast array of powers but going over just the combat important ones this would give The Nothing access to many forms of Element Manipulation, Body-Swapping, Sleep Inducement, Illusion Creation, Sound Nullification, Time Stop, Spatial Looping, Sealing, BFR into a Maze Dimension, Attack Reflection/Copying, Shield Creation, Masterful Skill, Super Strength, Duplication, Summoning a Sword that can cut through anything, Size Manipulation along with Statistics Increase/Decrease, Creation, Transmutation (into Sweets), Freezing, summoning a matter-dissolving mist, and Speed Amplification

In terms of weaknesses, The Nothing's main one is that she isn't really a fighter. She's a confused and lonely spirit traveling around just erasing things to try and get back her friends. Her mental stats are almost entirely unknown and so can be defeated by love as Sakura showed. Also as you may have noticed her movement speed and sensory/attack range are quite low for her tier. Most characters anywhere near her own tier even if they can't beat her could fairly easily escape from her by traveling far away.

Name: The Nothing, The Hope, The Sealed Card

Origin: Cardcaptor Sakura

Powers and Abilities: Incorporeality (Is the Negative Energy Balance of the Clow Cards), Existence Erasure (Passive), Restoration (after becoming the Hope), Magic, Magic Resistance, Levitation/Flight, Teleportation, Telekinesis, Extrasensory Perception, Possibly the Powers of the other Sakura Cards

Weaknesses: Is a lonely and confused spirit rather then a fighter

Attack Potency: Multiversal (Is the opposite of the Clow Cards who had all of Clow Reed's power)

Range: Likely in the kilometers (was disappearing things across town)

Speed: FTL Movement Speed, Likely Infinite Reaction Speed

Durability: Functionally Multiversal (Presence erased attacks so has never been seen being hit by something, but is a multiversal energy and passively erases energy on that level that comes into contact with her)

Stamina: Presumably Infinite (Does not have a physical body to tire)

Intelligence: Human Level (Knew to erase the phone line to stop Sakura from learning of her)

What other verses could potentially stop the fall of nothingness upon them

Sailor Moon is the most famous Magical Girl series and the final villain is also an embodiment of nothingness, so what if the Nothing awoke in the Sailor Moon verse. The Sailor Senshi in general are a lot more well equipped to evade the Nothing given their cosmic tier senses, greater combat skill then base Sakura, and being able to fly much faster then it. That said the Nothing's erasure is much greater then something like Death Phantom's which is the strongest in the verse meaning no one could get into close to the Nothing. Hypothetically the most likely victory is Sailor Moon herself showing the Nothing love as Sakura did and winning similarly. But if Usagi herself wasn't there, would the Sailor Senshi or their villains be able to stop the Nothing?

So it's tricky because the Nothing really has two layers of defense even without the Sakura cards: a general magic resistance, and the fact that anything that comes into contact with her is erased. There are non magic powers that might be able to do it like Luuga sucking people into a video game but these are usually beams that would just be erased. There are powers that don't require contact like the Evil Eye, Nehelenia's Curse, The Silence or even Star Seed Removal but these are all magic. 

Sailor Mercury could create a hyperspace and Sailor Pluto can seal off spaces so it's possible they could seal the Nothing, though as the Nothing can erase spaces, the effectiveness of this may only be temporary. The best counter is Professor Tomoe's advanced technology which temporarily trapped Super Sailor Moon in a dimension large enough that it seemed to contain a star. The Nothing could probably escape this, it would just take a while given her moment speed. The best strategy I can device is Saphir of the Black Moon Clan using his technology to BFR The Nothing into another time, though if she has the Sakura cards, she'd have The Return and even this would not stop. Because so much of the powers of the verse are magic, I do think they'd need Sailor Moon herself to fully stop the Nothing, though they can delay her and avoid her a long time, much longer then Sakura and friends were able to mostly due to the Sailor Moon verse having a lot better movement speed. 

What about in the other of the big 3 Magical Girl verses? What if the Nothing awoke in a much darker Magical Girl universe? In Puella Magi The Nothing would also obviously be a massive threat for the same reasons. Most of the verse relies on magic and Homura's time stop magic in the original timeline was considered a high tier magic, yet Time Stop did nothing on The Nothing. Witches could try to trap The Nothing in a Labyrinth assuming they are cognizant of the threat, but they're not large enough to contain the Nothing very long outside of some very high end interpretation of the sizes of Witch Labyrinths. 

Like with Sailor Moon there are powers that are non-magical. The Incubators were able to scientifically create a field to trap Kami Madoka a conceptual entity so I'd think they could do something similar to The Nothing assuming the Nothing's presence doesn't automatically erase it. The problem is whether they can do this to her without the Nothing just unmaking them with her speed which really depends on what you think of their stealth and manipulation abilities vs the Nothing's extrasensory perception. As a team effort they should be able to do that if The Nothing is distracted. Also the Wraiths from the new reality also may not all count as magical as they were created as a retroactive replacement for the Witches and in that case Wraiths have abilities that might work. If she ran across False Madoka, she could literally just recreate Clow Reed from The Nothing's memories. Though this hinges on whether you think those abilities count as magical. 

Against someone like Kami Madoka the Nothing has never shown the ability to disappear conceptual entities so I don't think the Nothing could do anything to Kami Madoka. On the other hand Madoka uses magic and so the Multiversal Magic Resistance of The Nothing means Madoka can't affect the Nothing in contrast. Madoka could potentially beat it via the power of Love. This is complicated by the fact that Madoka can't make herself known to people though the Nothing may not count as basically an embodiment of nothing and a mass of negative magical energy. If Madoka can appear before The Nothing, presumably she could save her the way Sakura did. 

Yugioh is another anime about spirits in cards that are collected and is of a similar power level to Clamp mostly, so what would happen if the very dangerous card was unsealed in Yugioh? Well the magic of the magicians in the verse would obviously do nothing against The Nothing for obvious reasons and because of that they couldn't induce a game of darkness and bring the rules of Duel Monsters for life, so for the most part the other things the verse could try are the natural abilities of monsters and the verse's technology.

The latter is much more impressive then expected, whether one is talking about the manga or the anime. For the former canon KaibaCorp has invented technology that can project one's consciousness into a hyperdimension. This might work on the Nothing, assuming you think that they can do this to an incorporeal entity like her. Most monsters as you might imagine don't have anything that would effect the Nothing outside the possibility of psychic monsters being able to mess with her mind like they can do with other Duel Spirits. 

The Nothing vs the Egyptian Gods might be interesting as they are big enough naturally she would have trouble erasing and they have a natural resistance to magic from anything less divine then they. They've never shown resistance to erasure on the scale of The Nothing but the Prana in DSOD was arguably comparable and they likely could resist magic on that scale. The question from there is if they have anything to stop her before she eventually erases them in pieces. They were able to induce madness and instantly kill normal humans though this is likely less to work on an incorporeal entity like the Nothing. Osiris and Obelisk's clash were able to send Yugi and Kaiba's souls back to the ancient past which they might be able to trap the Nothing though if that counts as a victory is debatable. It may take top tiers in the verse to beat the Nothing just from being divine or otherwise non magical entities on her own scale like Horakthy and the Numeron Code but the Nothing is probably a similar top tier of the verse.

Pokemon is another anime highly nostalgic for people from a young age, and Sakura and Tomoyo were referenced with a little cameo in one of the episodes so what if Giratina found another Negative Cosmic Force appearing? Pokemon has similar light-timing feats as the upper tiers of CCS so her movement speed should be fairly normal for at least strong pokemon. Her power on the other hand would be similar to Giratina on the low end, and Arceus on the high end depending on of if you think the Creation Trio are multiversal. Her Magic Resistance would probably be translated as something like an immunity to Fairy Type moves. Combined with her erasing any move that makes any form of contact, most Pokemon would be hard pressed to find ways of affecting the Nothing.

Similar to the above Psychic Type moves could presumably at least delay her as they can affect Ghost Types who are spirits, though they are weak against them. The Legendaries in general have a lot more tools for fighting her then most of the previous verses, mostly as numerous of them have abilities that are neither magic nor make contact. Mewtwo was able to wipe Nurse Joy's memories just by waving his hand, Jirachi can grant wishes, and Yveltal's corruption is an aura effect for comparison. Now that doesn't make this easy, as if they are close enough to use this, they're broadly close enough for the Nothing to fight them too and given her reaction speed and ability to just open up existence erasing bubbles let along if she gets close to them with teleportation she could one-shot any of them. Defeating her would be an extreme effort and she would probably be classified as a special legendary tier threat alongside the likes of Darkrai and Cressalia, Darkrai able to put up something of a fight against the Creation Trio.

Against the Creation Trio and Arceus themselves, The Nothing would be a bit of a disadvantage. She has rivaling or even surpassing power, but she has much bigger weaknesses then they do. They have cosmic awareness and range, as well as versatility surpassing even the Clow Cards. While Dialga and Palkia's time and space manipulation conventionally likely wouldn't work, and Giratina's antimatter would likely be erased trying to come into contact with The Nothing, they also have more esoteric powers like conceptual manipulation. That's not an instant win, as even Clow Reed who could suspend the laws of the multiverse only sealed away the Nothing, but it does mean that they could just monitor her from outside her awareness and figure out some way of stopping her. 

Finally, Touhou is a series that has been aesthetically compared with Clamp's before and has copious magic card usage, so what would happen if a seal of an ancient magician was broken in Gensokyo and The Nothing floated into the Land of Fantasies? In Touhou the Nothing would have bizarrely lopsided stats, having power akin to that of the Sages but speed like that of Fairies, if that. However needless to say the usual style of combat in the verse using magic danmaku projectiles would not work against either of the Nothing's defenses. In fairness most of the characters should be able to avoid attacks from her fairly easily so long as she doesn't get close, it's moreso just a matter of if they have any way of getting through her defenses.

Against someone like Reimu for instance, while Reimu can avoid being erased entirely by floating above existence where The Nothing can't affect, whether Reimu can do anything back depends on if any of her spiritual techniques are considered non-magical which is unlikely given how broad magic is in Touhou. There are some non magic abilities. The Kappa are a race of supergenius who build things like optical camouflage and the verse has numerous Type 5 supergeniuses that scale to such things as making elixirs that remove the concept of death from oneself, especially the Lunarians, who could pretty easily manipulate The Nothing. Depending on what counts as magic it's possible almost nothing a lot of the main fighters could do to hurt her though they have plenty of ways of evading or delaying her. There are some however some win cons. Moon Rabbits like Reisen have ESP that allows for psychic manipulation and this is treated as a biological ability of theirs rather then magic. Sumireko is a human esper from outside of Gensokyo whose powers may work. Honestly the most likely win con would be someone like Byakuren, the symbol of Buddhist compassion befriending her by showing her love as Sakura did. Outside of that Sumireki is a human esper from outside of Gensokyo who's powers might work

Against the actual Top Tiers the Nothing probably wouldn't do that well. While her raw power would be viewed as substantial, most of the characters are metaconceptual entities who take on forms willingly and so are entirely immune from anything the Nothing can do. In contrast they would have things they could do such as Yukari shifting the boundary of The Nothing's existence erasing aura to a small circle within her allowing her to be affected or Eirin can potentially make a potion that removes the concept of "disappearance" from people. As such while they would take notice of her for her raw power, she would not be viewed as Sage Tier herself.