The rubber pirate captain who ate the Gomu Gomu no Mi—later revealed to be the mythical Human-Human Fruit, Model: Nika—and turned devil fruit powers into a cartoon playground. In Gear 5, Luffy can reshape reality itself with Looney Tunes logic, turning the ground to rubber and grabbing lightning bolts from the sky with his bare hands. He punched a celestial dragon in the face on national television and would absolutely do it again.

A hero who trained so hard he went bald and accidentally shattered the concept of power scaling itself. Saitama can defeat any opponent with a single serious punch—that's not an exaggeration, it's the entire premise. He's punched through dimensions, sneezed away Jupiter's atmosphere, and his biggest daily challenge is finding a sale at the supermarket before it closes. The ultimate parody character who is, paradoxically, completely unbeatable.