One Punch Man is a franchise characterized by overpowered characters and their feats of otherworldly strength. Throughout the series, many of the strongest characters in its universe have made names for themselves as unparalleled powerhouses capable of some of the greatest feats imaginable.
As such, One Punch Man is no stranger to displays of power that simply boggle the mind and defy any natural order. While there have been many of these since the inception of the series, a few have taken the cake as some of the most unforgettable, with fans hoping to see more ridiculous displays of power in the future.
7
Saitama took a dimensional slash like it was nothing
Arc: Ninja Village Arc
The whole premise for One Punch Man series is that the protagonist, Saitama, is the strongest being in existence, capable of doing things that defy all logic. One of his greatest abilities is that he exists beyond physical dimensions, as he was seen grabbing the hyperspace portals and turning them away in his fight with the Garou.
Similarly, his brief encounter with the Empty Void showed the true extent of this unique power. The villain unleashed an incredibly powerful attack from a higher dimension, bypassing space and durability itself, as there was simply no way to block it for anyone else. For Saitama, however, he just grabbed the slash and physically pulled the Empty Void from the higher dimension, showing how his strength defies all logic.
6
Tatsumaki crushed one of the strongest monsters in history
Arc: Monster Association Arc
As the most powerful Esper in the series, Tatsumaki more than proved his mettle in the ultimate battle against Psykorochi at the end of the Monster Association Arc. With the latter being the most powerful monster viewers had seen up to that point, Tatsumaki was pushed to the absolute limit of what she could do with her powers.
But with a great deal of help from Genos, the two would team up to finally take down the monster for good. The final hit was all of Tatsumaki's own strength, where she twisted the giant monster to form a narrow but gigantic spear-like weapon which she then drove into the ground, ending the threat of the Monster Association for good.
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5
Orochi sliced off much of the Earth's surface
Arc: Monster Association Arc
To truly express how strong Tatsumaki is, one must look at the caliber of her greatest enemy, Psykorochi. When the mighty Esper and the King of Monsters merged, their strength grew to enormous proportions, combining Psyko's incredible psychic power with Orochi's raw destructive power and receiving an additional boost from God.
Eventually, the villain fired a massive energy beam at Tatsumaki. Although the hero dodged it, the resulting energy attack was so large and powerful that Psykorochi sliced open much of the surface of the Earth itself, displaying a feat of power that was one of the greatest in franchise history.
4
Garou, Platinum Sperm and Flashy Flash fought faster than light
Arc: Monster Association Arc
During the peak of the Monster Association Arc, fans got a glimpse of the fastest characters at the time aside from Saitama and Blast. Garou, Platinum Sperm, and Flashy Flash fought in a deadly three-way battle to determine the fastest and strongest among them, leading to one of the best matches in the entire franchise.
While not a display of outright physical strength, this battle showcased a clash of speed, with all three of these fighters being among the fastest characters in the franchise. Due to all of them moving much faster than light itself, they constructed a tall constellation of light loops behind them, making it one of the most visually striking moments in the manga.
3
Saitama reduced Jupiter's moon to rubble
Arc: Monster Association Arc
Saitama's clash against the Cosmic Garou finally saw the Caped Baldy fight in earnest, which also turned out to be one of the most visually striking battles ever seen on a manga page. Some of the greatest feats of strength in history were on display here, but few can ever top Saitama's Serious Table Flip.
Well into the battle, Garou matched Saitama's strength, but he eventually found out that the hero's growth rate is far beyond Garou's own. In the fight, Saitama dug his hand into the surface of Jupiter's moon, Io, and brought it up with such incredible force that he reduced the entire moon to rubble, showing that his strength was simply unmatched.
2
Saitama sneezed away an entire planet
Arc: Monster Association Arc
Space freezes due to it being a giant vacuum. Because of this important fact, Saitama caught a bit of a cold in his fight against Garou. As if the reduction of Io to rubble wasn't enough, Saitama would then unleash one of the most insane and powerful feats the manga industry has ever seen.
While on Io facing Jupiter, Saitama would release a massive sneeze with such incredible force that he completely destroyed Jupiter by pushing out all the gas and leaving nothing but its solid core. His sneeze alone was stronger than the most powerful attacks of many anime characters, as it destroyed an entire planet much larger than Earth.
1
Saitama and Garou's Clash erased part of the universe
Arc: Monster Association Arc
When Garou received his power from God, his strength in his Cosmic Fear Mode was the only thing in the history of the series that matched Saitama's own. There was no better example of this than at the beginning of their fight, when they clashed with each their own Serious Punch, resulting in “Serious Punch Squared”.
The sheer amount of kinetic energy released from this fist was so great that Blast knew he had to get rid of it. So, with the help of his team, he transported the resulting energy away to a faraway part of the universe. As such, the force of this collision was shown to create a Super Void that was millions of light years across, and it did so instantly. This is one of the greatest displays of speed and power in all of fiction, as the chaotic energy of the attack spread billions of times faster than the speed of light, destroying millions of galaxies and star systems in the process.
