He mounts a new attack on the JSA after Rick Tyler changes history to save his father from his death at the hands of Extant, the change of history creating a weakness in the timestream that Degaton can use to mount an attack. He makes arrangements to ensure that the JSA's temporary 1950s dissolution would become permanent before setting up an attack on the White House that would culminate in the Atom 'self-destructing', reasoning that the death of President Truman due to a costumed hero would disgrace all masked crime-fighters and leave them branded as traitors, thus erasing from history all subsequent superheroes. Degaton is eventually stopped by an alliance of the 1950s JSA and the early-2000s JSA. The timeline is restored so that his changes never occurred. However, Degaton retreats into the time-stream with his memories intact rather than being forced back to 1947 with his memories wiped, renewing his commitment to watching his enemies' deaths across time.