Stalk-Eyed Venusian

These Venusians conduct an experiment where in they give Mr. Dingle, a Human, super intelligence to see how the Earthman will utilize it. They meet a Two-Headed Martian and learn that Mr. Dingle had previously been granted super strength only to use it for his own gain.

Biology
The stalk-eyed Venusians are humanoids who have a short, child-like stature. While they appear mostly Human-like, they notably have bulging, hairless scalps, with two long eye-stalks coming from two dark spots on the tops of their heads. Their "normal" eyes have dark spots around them, and they are known to be able to grow facial hair, such as mustaches. Despite evolving in the Venusian environment, they seem perfectly capable of surviving in Earth's environment. They are known to have an odd, shuffle-like manner of walking, and often keep their arms in a folded position, which may be natural or some sort of cultural habit.

Culture and society
Like the two-headed Martians, the stalk-eyed Venusians are interplanetary scientists. They are known to conduct experiments on Humans and other sapient lifeforms, with their only known experiment consisting of giving said lifeforms enhanced intelligence and observing what they would do with it. They appear to hold friendly relations with the two-headed Martians, enough to share subjects and results of experiments.

Technology
The stalk-eyed Venusians are known to have some sort of cloaking technology that they presumably hide in their clothing, as they are invisible and inaudible to Humans, but are still able to see and communicate with Martians, who are able to see and communicate with them as well. Like the two-headed Martians, their method of granting enhanced traits manifests as a bright light, but held within their right sleeve, possibly as a cybernetic built into their hand.

History
Two stalk-eyed Venusians arrived at a bar on Earth just as a two-headed Martian was leaving it, having had wrapped up their experiment with a Human vacuum-cleaner salesman named Mr. Dingle. They ask the Martians about their experiment, learning that the Martians conducted experiments of heightening strength, to which the Venusians reply that their experiments are in the vein of enhancing intellect. The Venusians ask for a subject for their experiment, and are directed to Mr. Dingle, who the Martians claim is sub-physical and likely sub-mental. Deciding that he'll do, they grant him enhanced intelligence, and withdraw to observe the results, becoming the second in a long line of alien scientists to experiment on him.

Appearances

 * The Twilight Zone, s02e19, "Mr. Dingle the Strong" (1961)