Professor Ojo was the son of prominent atomic scientist Manuel Ojo, who ended up contaminating his own genes and those of his future son. In the Professor's case, it resulted in his being born without an eye, although he inherited something else from his father...his intellect. Devising a cybernetic eye, Ojo sought to rid the world of atomic energy through terrorist networks. This brought him into conflict with first Richard Dragon and Benjamin Turner, then later the dynamic duo of Green Lantern and Green Arrow. Despite coming equipped with a floating cyber-eye capable of emitting various rays from its optical centre, Ojo was always outmatched by his opponents on Earth-One.
Two men on Earth-Two were known as the Gorrah, a one-eyed wonder presiding over a secret city in Asia. The ruler was himself the counterpart of Professor Ojo, while the imitation Ojo supplanted the sovereign temporarily until his presence was uncovered by the dynamic duo of Tex Thompson and Bob Daley, whom he would form a recurring pattern of conflict with. This Gorrah was the cosmic twin of Earth-One's Primon, both possessing vast mental abilities. The real Gorrah never reached the level of infamy that Ojo attained, but then again he was a greater success as a result.