Greatest DC Heroes of All Time

 Atom Smasher

Albert Rothstein is a superhero. He has been a member of Infinity, Inc, the Justice League International and the Justice Society of America. The Atom Smasher can increase his size, allowing him to grow up to 28 feet tall. At this height, Al is resistant to all attacks from normal sized people. In addition, Al increases the distance between his own atoms, thus increasing his overall size. Under normal circumstances, his mass would remain the same no matter how large he becomes.