Right out of the gate: best name ever. Anglicized from the Old Irish Fionn mac Cumhaill, Finn McCool's name pretty much sums up why this badass giant is a force to be reckoned with. Finn spent his entire life wandering around Ireland kicking butt and partying. He once fought the Celtic god of war and won, and he hurled rocks at giants on other islands when they pissed him off (the Isle of Mann was said to have been formed this way). He also became omniscient after accidentally eating some of the great Salmon of Wisdom, and would be able to anticipate anything the Man of Steel pulled on him. Stay away from this fightin' Irishman, Superman.