Mario. No, seriously, Mario is the most badass video game character ever. He jumps on his enemies so hard that he completely flattens them. Their bone structure actually just disintegrates under the mighty soles of Mario's shoes.
He can also leap lord knows how many feet in the air, and that's not including wall jumps.
He's also apparently had his molecular structure rearranged so that he could walk through walls, become a being of solid metal, have the ability to fly, and the ability to launch fire out of his palms at will on top of various other enhancements provided by picking up strange things.
To top it all off, he's damn near, if not entirely indestructible. Think about it, Mario has been shot, stabbed, lit on fire, thrown into lava, electrocuted, blown up, fallen from ridiculous heights, been eaten, crushed, kept underwater for lengths of time that would drown any normal person, can survive in the vacuum of space with no specialized equipment, has had hammers and boomerangs lodged in his skull, and he regularly slams his head into floating brick blocks to smash them and retrieve whatever may be inside. Not only is he still alive, he's gone and learned how to drive an arsenal toting go-kart as well as play various sports for shits and giggles.
Why can he do all these things? So he can save the princess of course. No other reason, no implied ulterior motives (although many are imagined), just so he can save the princess and bring peace to his home.
Mario is a badass.