Saitama’s overwhelming strength has been a topic of discussion for years, with fans often wondering how he would perform in different anime settings. His ability to defeat any opponent with a single punch makes him one of the most unique characters in anime history.
However, every anime universe has its own rules, power systems, and combat mechanics, which could affect how Saitama interacts with its strongest fighters. Would he dominate everywhere he goes, or are there places where his power would be tested in new ways?

Some anime worlds are filled with reality-warping abilities, while others focus on energy-based attacks, strategy, or supernatural elements. If Saitama were placed in these environments, his usual approach to battle might not work the same way.
This idea leads to interesting possibilities about how he would adapt or if he would struggle against enemies with abilities that go beyond raw strength. Looking at different anime universes, it becomes clear that Saitama’s impact would vary depending on where he finds himself.
Saitama in the Dragon Ball Universe
The world of Dragon Ball is one of the first places fans imagine Saitama entering, given its focus on powerful fighters and intense battles. At first glance, it might seem like Saitama would be a perfect fit, considering how strong Dragon Ball characters become over time.
However, the major difference is that power levels in this universe are not just about physical strength. Ki energy, transformations, and divine abilities play a major role in determining how fights turn out. Saitama’s raw strength would allow him to take down many lower-tier fighters with ease.
However, facing beings like Beerus, Whis, or Zeno could lead to unpredictable results. If he cannot manipulate energy or survive reality-breaking attacks, he might struggle against characters who can erase existence itself.
On the other hand, if his durability is truly limitless, he might walk through any attack thrown at him without much effort. Either way, his presence in this universe would create some of the strangest battles ever seen.
Saitama in the Naruto Universe
In the Naruto world, battles are centered around chakra-based techniques, strategy, and intelligence. While Saitama is physically unmatched, the shinobi of this universe rely on abilities that go beyond brute force. Genjutsu, for example, could be an issue if Saitama has no resistance to illusion-based techniques.
If someone like Itachi were to trap him in a powerful mind illusion, it is unclear whether he could break free or if he would be stuck in a nightmare indefinitely. However, when it comes to raw combat, few would be able to handle Saitama’s speed and power.
No Jutsu, no matter how advanced, would be able to stop a punch from him once it lands. He would likely tear through every defense, including the strongest Susanoo, and destroy entire battlefields without trying. Even tailed beasts like Kurama would be nothing more than a light workout for him.
The biggest question would be whether he could handle the complex abilities of the Ōtsutsuki clan, who possess space-time manipulation and reality-defying skills.
Saitama in the Attack on Titan Universe
If Saitama were placed in Attack on Titan, the entire story would end in a single day. Titans, no matter their size, would be no match for him, and he would clear out every last one with minimal effort. The Survey Corps wouldn’t even need their ODM gear, as Saitama could eliminate the threat faster than they could react.
However, what makes this scenario funny is imagining Saitama trying to live in such a dramatic and emotional world. While everyone around him would be struggling to survive, he would be completely unbothered by the chaos.
The biggest challenge for him might be dealing with the serious attitudes of the characters, especially someone like Levi, who takes everything to heart. It would not be a fair fight in any sense, as the world of Attack on Titan is not designed to handle a being as powerful as Saitama.
Saitama in the One Piece Universe
One Piece is filled with powerful individuals who possess Devil Fruit abilities, insane endurance, and superhuman strength. However, the mechanics of this world are quite different from the ones Saitama is used to. Haki, Devil Fruits, and the sheer unpredictability of combat mean that fights are often more than just a contest of strength.
Saitama would have no trouble dealing with most physical attacks, and even the strongest Logia users would struggle against him since his punches ignore durability. However, the presence of characters like Blackbeard, who can nullify abilities, raises an interesting question.
Would Saitama’s strength be affected if he was hit by the Yami Yami no Mi’s power? If not, then he would continue his usual dominance, likely sending Kaido, Big Mom, and other top-tier fighters flying with a single hit.
The only real challenge for him might be understanding how One Piece logic works, as he does not fit the cartoonish chaos of the series.
Saitama in the Bleach Universe
The world of Bleach introduces spiritual energy, Soul Reapers, Hollows, and powers that affect the soul rather than the body. This raises an interesting question—does Saitama have a soul strong enough to resist the effects of spiritual pressure?
If he were to face someone like Aizen, who can manipulate perception with Kyoka Suigetsu, would he be affected? These are things that go beyond physical abilities, making it difficult to determine how Saitama would respond.
However, in terms of pure strength, no one in Bleach would be able to stand against him physically. He would likely destroy any Hollow or Soul Reaper with ease, breaking through even the strongest Zanpakuto techniques without effort.
The only possible challenge would be against beings who manipulate existence itself, but if Saitama’s invulnerability extends beyond physical attacks, then he would remain undefeated.
Saitama in the JoJo’s Bizarre Adventure Universe
This is one of the strangest anime worlds Saitama could find himself in. Unlike other universes where strength and speed matter most, JoJo’s Bizarre Adventure relies on Stands—mysterious manifestations of power that follow their own bizarre rules.

Saitama’s strength would be meaningless against some of these abilities, especially those that manipulate time or reality. Characters like Dio and Jotaro, who can stop time, might give Saitama a difficult experience, even if they cannot physically harm him.
More powerful beings like Funny Valentine with D4C or Giorno with Gold Experience Requiem could create situations where Saitama’s punches would have no effect. This would be one of the few anime worlds where he might struggle, not because of power levels but because of how broken the abilities are.
Would Saitama Ever Be Challenged?
Saitama’s presence in different anime universes would lead to interesting scenarios. In worlds that focus on raw strength, he would dominate without much effort. However, in places where combat relies on reality manipulation, energy-based attacks, or unique abilities, things become more uncertain.
If he retains his ability to ignore all damage, then he will remain undefeated. However, if he is subject to the same rules as everyone else, there might be situations where he would struggle for the first time.