Turns out that after a millenia has passed Beowulf is still the toughest of heroes. He took on Grendle with his bare hands, dropping even his clothes (or so some accounts relate) and tore his arm off and beat him with it. Grendle's demon/giant/cow of a mother suffers a similar fate, losing her head in the contest and at last Grendle, about 70 odd years old tackles a dragon. Thought the dragon seems to best him...he is 70 years old after all and who wouldn't get a little winded at 70...some knucklehead comes to help him. Who can say whether Beowulf would have stomped the dragon eventually or not.
But Beowulf still stands tall as the world's greatest hero!