Supermen Revenge Squads of Two Earths

The Superman Revenge Squad had its origin on the planet Wehr II, when Superboy interferred in their goals of interstellar conquest. The Wehrian dictators and their minions banded together to form the Squad, intent on destroying their mutual foe. Tracking Superboy’s thought patterns to his adopted home world, they planned to transmit a devastating bomb that would obliterate Earth-One. Temporarily removing memory of his alter ego as Superboy, the Squad’s scheme was squelched. They would return later enlisting Superboy’s aid to save their sun. 

Years later, the now Superman Revenge Squad hatched various catastrophes upon Superman, utilizing red Kryptonite to induce nightmare visions and other mind molding methods to mentally manipulate the Man of Steel. On one occasion, the Revengers created a replica of Earth-One in another universe including synthetic versions of Superman’s friends and family. Another time, they refashioned a Superman robot into the being known as Ajax as their pawn against his former creator. Each occasion ended the same, with Superman coming out victorious, and the Revengers involved eliminated by their overlords due to their failure.

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Blue-skinned Nugat, Karmeel, Ksuu and their brothers were servants of Creator2, a planetary designer tasked with creating a new world in place of Earth-Two. In order to do this, Creator2 and his Wehrians and aids  sought to merge their universe’s Earth with that of Earth-One, using the android Red Tornado’s dimension-spanning abilities. They knew they would be opposed by the Justice Society of America. And so, Creator2’s blue-skinned Mendicant slaves were equipped with web-snares specially developed to capture the Society’s individual members.

Using these, they subdued Superman, Doctor Mid-Nite and the Flash. The effects of the alien nets which captured the trio were felt by Earth-One's Superman, Flash and... Batman!. Soon almost all of the JSA were left comatose by this alien horde. However, thanks to the intervention of the Spectre along with Doctor Fate and the Thunderbolt, Creator2’s space-vessel was destroyed, along with all its occupants. This ended the threat of a potential Superman Revenge Squad that could’ve formed to menace Earth-Two and its Superman in the years to come.