Lightning and Thunder were a twin brothers born to a Vietnamese mother and with an American father... or so they thought. As they grew to young manhood, each lad gained a tremendous and seemingly volatile power. Gan as Thunder could emit sound waves and has superstrength whole Tavis as Lightning could discharge electrocity. The Williams brothers found themselves on conflict twice versus the Teen Titans although they ended up as allies.
Lightning Master, his true identity unknown. This hooded scientist in the Metropolis of Earth-Two created a lightning generator and portable lightning gun, which he used to blackmail the city until his schemes were undone by Superman. Doctor Doog was another intellectual who profited by stealing technology from others. Using an ultra-dynamo created by a Professor Davis, Doog commutes a reign of terror only stopped by intervention of Starman, who had himself been bequeathed with a Davis’ gadget. However, scant weeks later Doctor Doog and Lightning Master were back, this time sent as an assassins by mastermind Ian Karkull, although the Justice Society defeated these two and their criminal cronies.