Overlord
Anime Like One Punch Man
If the best aspect of One Punch Man for you is its ridiculously powerful, unstoppable hero, then Overlord is going to be right up your alley. Just like Saitama, Ainz in Overlord is basically invincible and has no problem wiping the floor with virtually every enemy he goes up against.
Overlord is another anime in the vein of Sword Art Online, as it involves players getting trapped within a virtual MMO. AinZ is the best character in the game, before and after getting trapped, and he kind of takes it upon himself to play god in some ways. The biggest difference is that Overlord oftentimes plays things much more seriously than One Punch Man. There are plenty of comedic elements, but Overlord is a much darker story with a protagonist that isn’t quite as jokey as Saitama. These two shows completely do away with the hero going through growth and a rise to power, instead opting to let you watch from the perspective of someone who’s completely overpowered.
