In their travels, the quartet has found people marked with the Atom's familiar symbol. The group tracks Palmer to Earth-51, where he assumes the life of its native Palmer after his life is cut short during his studies of the Multiverse and discovery of the looming Crisis. Meeting the Jean of Earth-51 and the Justice League again for the first time, Palmer is found on a world where the heroes have been able to eradicate supercrime and create a utopian Earth (later revealed to have been the result of this reality's Batman murdering all of this world's super-criminals after the Joker killed Jason Todd). However, once Kyle, Donna, Jason and Bob the Monitor are able to track him down, Bob attempts to kill Palmer; with the Challengers' help, Palmer escapes and reveals to the Challengers that it was the Ray Palmer of Earth-51 who was meant to stop the Great Disaster and that he had been trying to carry on his work, to no avail.