Saitama, the protagonist of One Punch Man , possesses seemingly limitless and unparalleled physical strength. He can defeat any opponent with a single punch, often causing monsters and villains to explode on impact
. His strength surpasses planetary levels, as he has effortlessly destroyed parts of Jupiter and its moon Io during battles, placing him at a cosmic-tier threat capable of reshaping entire worlds
. In terms of raw power, Saitama can lift and move objects weighing at least 100,000 tons, such as an aircraft carrier
. His punches have been estimated to deliver the force equivalent to multiple megatons of TNT, comparable to or exceeding the power of nuclear bombs
. Despite this, his strength is portrayed as flexible within the story, scaling to be as strong as necessary to overcome any threat he faces, making him effectively limitless in power
. Moreover, Saitama's strength is not just brute force but also includes exponential growth potential. His fight with Cosmic Garou showcased him destroying a moon with a single hand and obliterating a large portion of Jupiter with a sneeze, all while fighting mostly with one arm
. This fight also revealed that Saitama's power continues to grow when challenged, suggesting he has no fixed upper limit and can become even stronger in response to worthy opponents
. In summary, Saitama is portrayed as an overwhelmingly powerful character whose strength is effectively infinite for the narrative, capable of destroying planets and beyond with ease, and growing stronger as needed to face any adversary
