He is registered with the Heroes Association as a B-Class Superhero (A-Class in the webcomic) and is tasked to defend Z-City against mysterious beings. Having apparently trained himself so hard that he unintentionally broke the natural limiter that prevents living beings from going beyond superhuman condition, Saitama faces an existential crisis as he is now too powerful to gain any thrill from his heroics. Saitama, (AKA Caped Baldy), is the titular ultimate main protagonist of the webcomic series/manga/anime One Punch-Man, and the most powerful being alive in existence. But what about "next time?" What will you do next?! Your compromised monster hobby! VS my serious hero hobby! Even if that's all I had, I still wouldn't lose! It was a mistake to lower the hurdle right before the goal. Peace made by ruling the world with fear can't succeed as long as you can't defeat me. It's perfect for someone with no confidence like you. A monster role is simpler, after all, all you had to do was defeat heroes. To bring about world peace, you took the easy route, thinking a monster's job was quicker and easier than a heroes'. You compromised and decided to be a monster. Even though you said you wanted to be a "monster of absolute evil". So you did have an "image of an ideal hero" inside of you. ~ Saitama to Fubuki after closing in on her.
Factions? Newbie crushing? Keeping your ranks? They have nothing to do with anything! Do not look down on heroes, you moron! When a monster stronger than you shows up, none of your subordinates will save you. At this rate, you are gonna cry sooner or later. You, who gathers weaker subordinates to feel strong, won't make it.
There's a lot of incredibly strong bad guys in the world. ~ Saitama describing the secret behind his power. ~ Saitama to the subterranean people during their fight.ฤก00 push-ups, 100 sit-ups, 100 squats, and a 10km run every single day!