It has to be my character in Skyrim because I play it in master and no one can do damage to me without magic. I can heal myself forever so I can be Immortal.
Other than that Mario is better. He kills but stomping on enemies. He flies to outer space without dying. He can kill bowser and throw him Miles away. MARIO rules the world.
I WAS GOING TO SAY ALEX MERCER DAM IT! well who else is there...i remember there was a review for a game where your guy couldnt die his head would just fall off and you could roll around with it
Technically, I think it would be Ganondorf, because he is immortal thanks to triforce of power. And Gordo's of course are powerful, but they can't move.