Dreams...what all men and women have... aspirations for good and for evil. On twin worlds, the course of history... two doctors desired to manipulate minds to feed their own demented desires. Doctor Destiny and Professor Elba... as well as other mental madmen like Hector Hammond and Henry King... caused plenty of trouble for their foes.
Doctor Destiny aka John Dee was originally a scientist devising anti-gravity discs and will-deadening devices, which he employed versus the Justice League. When these and his elaborate scheme failed to subdue his adversaries, the Doctor employed his greatest creation in the Materioptikon. This mechanism allowed him to materialize the dreams of his opponents. After a series of confrontations, the League placed mental blocks in place so that Dee could no longer dream, and thereby activate his virtual Materioptikon stored within his mind. This caused his body to wither and resemble a skeletal husk. It was at this point that Destiny adopted a costume much like that of other supervillains.
Henry King was a psychologist born a mutant with the ability to project images into the minds of others and thus mentally manipulate them. Operating through proxies initially, King assumed the alter ego of Brain Wave in order to ensnare members of the Justice Society and All-Star Squadron. However, it was the Green Lantern of Earth-Two who brought about his initial defeat. This began a long term enmity between the two. However, at some point in his life, King briefly settled down and married Merry Pemberton, who had been the heroine known as Gimmick Girl.
King was a charter member of both the Injustice Society and his world's version of the Secret Society of Super-Villains. Yet it was his first criminal ally, Professor Elba, for whom he drew inspiration from. Elba had sought to drive men insane with images of madness in their minds, much like his counterpart on Earth-One Doctor Destiny. And so like Destiny, on a couple of later occasions such as under the alias of Forest Malone, Brain Wave used devices to draw the Society members into nightmarish dreams. Later, King would project a body similar to that of his son Henry Jr. that mirrored Doctor Destiny's later costumed alter ego.
Two other master mind manipulators were Doctor Bendorian and Professor Alba/Elba.
Doctor Bendorian protrayed himself as an alien physical and fellow former victim of the creature known as the Unimaginable, who offered his services to assist the ailing members of the Justice League who were suffering the after effects of their battle versus their mutual foe. Turns out that the Doctor was actually a physical creation of the Unimaginative, which the League placed in stasis in its energy form like what occurred with his counterpart Aquarius' in its natural form on Earth-Two.
Professor Elba aka Professor Alba was the inventor of an insanity formula known as Solution K, with which he would inject into the bloodstreams of key witnesses of crime to cause madness. Several members of the Justice Society dealt with the after effects of this formula, and were assisted by non-member Doctor Mid-Nite into determining the root cause and the culprit behind this crime wave. Elba had himself been mentally manipulated by Henry King aka Brain Wave from behind the scenes, and after Able perished when injected with Solution K, Brain Wave carried on where Elba failed in a running conflict with the Society.