Al Pratt (Earth-2: Post-Crisis)

"When the JSA died, they left family members behind. Sandman has a nephew, the Atom, a son, Green Lantern's kids, Jennie and her brother."

- Sylvester Pemberton

Al Pratt was the Golden Age superhero known as the Atom and a member of the Justice Society of America.

Golden Age of Heroes
During the Golden Age of Heroes, Pratt was among those who decided to utilize their special abilities in hopes of protecting the world. Pratt dubbed himself the Atom, and subsequently became a member of the Justice Society of America.

Battle of Los Angeles
On Christmas Eve 2010, Pratt and the rest of the Justice Society fought the Injustice Society of America. In the battle, Pratt was killed in action and left his son, Grant Emerson, behind.