One Punch Man Backpack Saitama Surprised: welcome to the heroes' association with this superb One Punch Man fabric backpack, on which Saitama, the overpowered hero in flesh and blood, with a surprised air. Would he have won in video games against King the hero supposed to be the most powerful of the Class S after Blast and Senritsu no Tatsumaki? Not impossible, would he have gone to class S like his student Genos?