Many One Punch Man fan theories take a comedic approach, imagining absurd explanations for Saitama’s overwhelming power and the unusual quirks of the series. Some of the most amusing ideas include theories about time travel, dream sequences, and even Saitama’s baldness being linked to his extreme training.
There are also suggestions that Saitama could be a god, Genos might be a disguised robot dog, or that the entire series is just an elaborate simulation. These theories take creative liberties with the series’ humor, poking fun at the absurdity of Saitama’s unmatched strength.

Saitama’s True Power Lies in Dodging
One particularly entertaining theory suggests that Saitama is not actually super strong but rather possesses an unmatched ability to dodge attacks with absolute precision. This idea claims that he never truly lands a punch with overwhelming strength—he simply evades attacks so effortlessly that it gives the illusion of invincibility.
The theory humorously implies that all of his fights are won by exhausting his opponents rather than through brute force.
The “Serious” Face Is Just a Poor Attempt at Intimidation
Saitama’s signature “serious” face has led some fans to joke that it isn’t actually a display of focus or determination. Instead, they argue that his attempt to look intimidating simply results in an awkward expression that fails to strike fear into his enemies.
The humor in this theory comes from imagining that his most dramatic moments are unintentional, making his battles even funnier when viewed through this lens.
Saitama as an Overpowered Househusband
Another lighthearted theory reimagines Saitama’s life as that of a stay-at-home husband who applies his strength to mundane household chores.
According to this idea, even simple tasks like washing dishes or cleaning the house feel like a workout to him, contributing to his complete lack of excitement when it comes to real combat. The theory suggests that his daily struggles have nothing to do with villains but instead stem from the monotony of housework.
Genos Is Just a Loyal Robot Dog in Disguise
Genos’ unwavering devotion to Saitama has led to a playful theory that he isn’t actually a cyborg, but rather a robotic dog cleverly disguised as a humanoid warrior. This idea stems from his dog-like loyalty and endless pursuit of his master’s approval.
If true, it would mean that beneath his sleek metal exterior, Genos is actually a canine companion programmed to follow Saitama’s every command.
The Entire Universe is a Simulation
One amusing possibility proposes that the One Punch Man world isn’t real at all, but rather a carefully crafted computer simulation. According to this theory, Saitama is the only character who has become aware of the artificial nature of his surroundings, which explains his constant boredom and lack of interest in fighting.
His overwhelming strength, under this logic, is merely a glitch in the system, making him an all-powerful anomaly in a world that isn’t even real.

Saitama is Actually a Deity Toying with the World
A theory that adds a divine twist to Saitama’s abilities suggests that he is not just an ordinary hero but a god in disguise. This idea argues that he possesses limitless power because he is playing an elaborate game with the world, pretending to be a regular person while secretly being an all-powerful deity.
If true, it would mean that his casual approach to heroism is simply because he has nothing to fear and is merely amusing himself with the world’s events.
Baldness as a Side Effect of Training
The reason behind Saitama’s baldness has been a running joke in the series, but some fans have taken it a step further by turning it into a theory of its own. According to this idea, his hair loss wasn’t a random occurrence but a direct consequence of pushing his body to its absolute limits.
His legendary training regimen—100 push-ups, 100 sit-ups, 100 squats, and a 10-kilometer run every single day—was so intense that it didn’t just make him strong; it physically altered his body, leading to permanent baldness as an unfortunate side effect.
These fan theories add an extra layer of humor to One Punch Man, embracing the ridiculousness of Saitama’s character and the strange world he exists in. While none of them are meant to be taken seriously, they provide hilarious explanations for some of the most absurd aspects of the series.