The Atom's status with the Justice Society of America was as a reserve member up until after the formation of Infinity, Inc. Following the Crisis on Infinite Earths, the Last Days of the Justice Society Special (1986) told how Pratt, along with his teammates, prevented the unleashing of Ragnarök, a time-displaced and world-shattering event initiated by Adolf Hitler originally on April 12, 1945. To stave off the destruction of the world, Al and the others chose to enter a magical limbo - seemingly for all eternity.