Al Pratt (better known as The Atom) is a fictional superhero in DC Comics. He has atomic level powers but eventually succeeded by Dr. Ray Palmer. He was a founding member of the Justice Society of America and the All-Star Squadron. In the original comics, Pratt was the father of Grant Emerson/Damage and the godfather of Al Rothstein (Atom Smasher)
He was created by Bill O'Connor and Ben Flinton and debuted in All-American Comics #19; (Oct 1940)