After Batman tells Anarky to get out of Gotham City he relocates to Washington, D.C. and sets up a base under the Washington Monument. He warns the JLA that Aberration is coming, a breakdown of the laws of physics predicted by his computer system.
Aberration manifests as a being which needs to break down our universe’s physical laws and replace them with ones which suit itself. The computer notifies Anarky that Green Lantern is battling Fatality so he goes to help him hoping that Green Lantern will help against Aberration. He finds a Green Lantern Ring at the battle site and his computer notifies him that he is adopted.