Hal Jordan
In "Hal Jordan and the Green Lantern Corps" #45, the Atomic Skull is shown trying to make amends by being the warden at Stryker's Island Penitentiary. When Hal Jordan tried to break out Hector Hammond, the Atomic Skull fought him, but before he could do anything else, Hector Hammond renders him temporarily brain dead using his psychic powers and Hal Jordan convinces him to let the Atomic Skull live.