Professor Menace (Earth-One)

At the end of 1959, a robotics specialist presented his newest creation, a duplicate of Wonder Woman that he said was better than the original. The Amazon Princess accepted his challenge saying she would retire if the robot won a contest between them. Unfortuneatley, the competition was rigged to favor the imitation and the victory would go to the one who went the longest without sleep. Feeling humiliated, Diana agreed to go back to Paradise Island, not knowing that the Robot Master was known as Professor Menace. He had arranged the idea on behalf of the underworld. Not satisfied with beating Wonder Woman and leaving her in retirement, Professor Menace sent his robot to attack Diana as she was heading home. The Amazing Amazon did away with the robot, short-circuiting it with an electric ell and bringing the Robot Master to justice. WONDER WOMAN (first series) #111, by Bob Kanigher, Ross Andru and Mike Esposito).

Professor Menace returned joining with a number of other criminal masterminds including Doctor Destiny, Clock King and The Getaway Mastermind who broke out of prison in 1961. Recognizing that they'd be the subject of a manhunt by the Justice League, the group decided to take precautions. Professor Menace would be a key player. He constructed exact replicas of each criminal and it was those robots,wired with explosives and sent into battle with the JLA. Stumbling onto the fact that their foes were artificial beings, Green Arrow figured out the plot and fired arrows into their bodies, causing the explosion meant for himself and his teammates. In a remarkable one-mate feat, GA trailed the true rogues to their lair and captured all six men (JUSTICE LEAGUE OF AMERICA #5).