One was a prominent scientist, promoted to the chief administrator for S.T.A.R. Labs while secretly recruited into the criminal organization known as S.K.U.L.L. The other was a prominent actor, playing the part of a costumed crusader during the 1940's while covertly affiliating himself with Germany's Nazi regime. While did these men take these diabolical courses, when their lives held so much promise and potential?
Albert Michaels had a tremendous brain, which blessed him with great intellect yet cursed him with painful seizures. S.K.U.L.L. agents recruited him into their organization promising him a radium-powered device that would regulate his brainwaves to manage the seizures, if he secured a Kryptonite Pipeline project to defeat Earth-One's Superman. Instead, the device caused Michaels' to emit powerfully potent destructive energy from his cranium at unpredictable occasions. As the Atomic Skull, he took over the S.K.U.L.L. organization and sought revenge against the Man of Steel who always interfered with his plans while seeking a cure for himself. Neither goal was obtained despite his attacks versus Superman, then Flash and Firestorm, followed by another encountered with Superman alongside Man-Bat followed by his confronting Superman with his alter ego Clark Kent on a quirky case.
Lawrence Dennis had tremendous charisma, which blessed him with a stellar acting career while also giving him over-inflated dreams of grandeur. It was due to this that, after several appearances as the Atomic Skull, he convened a rally in Metropolis due call out the Ubermensch that he thought embodied the Nazi ideal, and in fact Superman arrived although none to pleased. When mastermind Emil Norvell attempted to slay the assembled crowd to dishearten the people, in fact Superman intervened and brought him to justice while calling out Dennis and his cause as sinister. His career fell flat after this, even if his fictional escapades were still on film reels somewhere in Hollywood.