The originalheld the mantle from 1962
Arthur Light
Powers. : Originally, Arthur Light was brilliant. However, his mind-wipe by the Justice League reduced his intelligence substantially. Light's recent recovery of his memories seems to have brought his brilliance back with them.
Origin
A brilliant scientist who turned to villainy, Arthur Light crafted advanced light-based technology to battle the Justice League of America, becoming one of their earliest recurring foes. A later mind-wipe by the League drastically dulled his intellect, though recovering those erased memories gradually restored his formidable genius.