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. When the Challengers return to their own Earth, Jimmy Olsen is kidnapped by Mary Marvel, who has been corrupted by Darkseid. Palmer hitches a ride from within Jimmy. When Darkseid takes control of Jimmy's powers, Palmer locates and shuts down the control sphere inside Jimmy's brain, but is then swarmed by Apokoliptian antibodies. While escaping this onslaught, Palmer discovers the "battery" containing the New God spirit energies. Palmer removes it from Jimmy's head and shatters it, releasing the energies. Palmer later (after much cajoling) joins Donna, Kyle, and Forager in their new mission as border guards to the Multiverse, realizing that there is nothing left for him on Earth anymore. However, Palmer returns home to New Earth one more time, upon realizing that his old nemesis Chronos had taken his identity to mislead a young pretender to his identity, Ryan Choi. After helping his successor to once again save Ivy Town, he returns to the Multiverse with a new sense of fulfillment, leaving his town in the hands of a new, capable hero. During the Final Crisis, Palmer returns to New Earth and works with Choi again to aid in the efforts to evacuate the last free humans. In the Justice League: Cry for Justice mini-series, it has been confirmed that Palmer will become a member of Hal Jordan's new Justice League. Blackest Night On the night of the superhero's memorial day, Palmer asks Hawkman to visit Jean's grave to be honored as a fallen member of the community, but Hawkman refuses because of what she did in Identity Crisis. Palmer is later shown speaking to Hawkman again, over the phone (unaware that his friend has been killed and reanimated as a Black Lantern). Atom is then invited to visit undead Hawkman to discuss his heartache over his wife. Palmer is later revealed to have shrunk into Hawkman's ring, escaping certain death. Joining the battle between Hal Jordan, Barry Allen, and the Black Lanterns, Palmer is set upon by Black Lanterns Ralph and Sue Dibny, who use his guilt over