VENUSIANS / YMIR

 

Primitive but not-aggressive unless provoked, the Ymirs are oviparous green skinned two meters tall  reptilian scaly bipeds with a long forked tail and a sagittal crest that extend into a long ridge running from the top heir head to their tail. They have a humanoid torso. Both their arms ans feet are clawed and three-fingered. Their lower legs are turned backward and their face has vaguely simian features, with jowls hanging from their cheaks. They have large nostrils, pointed ears and a pair of eyes surrounded by protective ridges. They have no heart or lungs but a "network of small tubes throughout (their) entire body" and breathes through 'fiberous filtering elements" that protects it from airborne poisons. They breathe sulfur. Under otherworldly conditions, Ymirs are known to be able to grow to much exotic proportions than their native one. On Earth, for instance, they have been known to grow up to 7 meters.

Source: 20 Million Miles to Earth, 1957, Morningside Productions / Columbia Pictures. Directed by Nathan Juran. Based on a story by Ray Harryhausen and Charlotte Knight, put  into screenplay by Bob Willaims and Chsritopher Knopft.

VENUSIANS / IT CONQUERED THE WORLD / ALIEN

"There's only one on Earth. They're nine altogether. The other eight are still on Venus. They're the sole survivors of a race that was born too soon. It developed in the eruptions and the boiling gases of Venus, a planet that won't catch up to Earth in perhaps a million years in climate."

―Dr. Tom Anderson

It remains unclear if the so-called venusians are indeed coming from the planet Venus as the only source we have on the subject is Dr Tom Anderson who was lied to abondantly by the creature. As of the mid 20th century they are practically extinct, with only nine remaining individuals, one of which, after having established radio contact with Anderson,convinced him of its benevolent intentions,  hijacked an Earth satellite to land on the planet in an attempt to conquer it with the scientist's help. Anderson believed that the alien, with its mind control abilities  would make humans emotionless, and therefore free them from war and misery. 
The creatures are ruthless and highly intelligent and have developed an advanced civilisation which is now extinct. They are the shape of a cone separated in eight soft ridges going from their top to their bottom, and at the base of which stick out six short frills or tendrils per ridge which likely aid in locomotion. On each side of their body come out two arms with crab-like pincer hands come out. They have a caricatural face on its front with a large mouth filled with sharp pointy teeth, the canines being tusk-like, deep set eyes and a embryonary nose. At the top of their body protrude a pair of short horns or antennae with which they can communicate with the small, manta-ray like flying probe creatures they can release from the base of their bodies. These flying organisms seek targets and bite them on the neck, releasing a small spike that allows the Venusian to control the victims' nervous centers from distance. Apart from their mind control abilities, the Venusians also have the ability to neutralise most types of technological devices within a large area around them.

Source:  It Conquered the World (1956) by Roger Corman

VENUSIANS / PHIBS / CENTOSAURS

Planet of origin: Venus

Phibs are a peaceful green skinned amphibian humanoid species with wide set goggle eyes, broad lipless and mouth, muscular webbed arms living in apreinustrial tribal society in the highlands lakes of Venus.  They communicate via touch-based telepathy and  suckle their own. They have been known to take momentary telepathic control of less evolved indigenous lifeforms such as the twenty-legged two hundred tons serpentine bodied monsters called centosaurs for self-defense.

Note: Phibs look much like the version of the venusians Frank R. Paul's Painted the same year.

Source: Isaac Asimov, Half-breeds on Venus.

OUTER SPACE MEN / VENUSIANS / MEN OF VENUS / GUARDIAN ANGELS / COMMANDER COMET

Planet of Origin: Venus

The Venusians are sentient humanoids looking strikingly similar to humans who have developed an highly advanced civilisation capable of space faring on Venus, building cities of which Olympus is the largest. They are known to have visited Earth as early as circa 1000 BC, landing in the Greek Isles where they were likened to gods. They since have kept a close watch over our planet.

Men of Venus action figures where commercialised in the sixties. Their story was told at the back of their blisterpack: 

From Olympus, largest of the great sky cities of Venus, the mighty cloud ship Cumulus sets forth. Like a fiery comet it blazes through the blackness of outer space toward our Earth. Its captain, Commander Comet, is a direct descendant of the mighty Zeus, leader of the historic first venusian expedition to Earth which landed near the Grecian Isles 3000 years ago. Commander Comet's present mission is one of routine surveillance and once within the atmosphere of Earth, his ship will join the great fleet of  Venusian crafts that float like clouds above our planet night and day, watching undetected over our world.

Source: Mel Birnkrant, The Outer Space Men – also known as the Colorform Aliens, 1968.

VENUSIANS

Planet of Origin: Venus

Veusian lifeforms had not acheived sentiance as of the 4th millenium and were only primitive savage monstrous lifeforms hidden in the planet's jungles.

Source: Beyond Infinity, by Nat Schachner Aka Chan Corbett, in Astounding Stories, Jan 1937.

The story tells of a series of invasion that befell Earth starting in 3195, as the universe unexpectedly starts to collapse on itself and the surviving species rush toward the worlds who are still unaffected by the phenomenon to delay their extinction. For some reasons, no mention is given that the invaders take any interest on settling on Venus.