Let's see if this fits all in one post. The 'Seleneans' mentioned below are called Lunarians in the timeline, because it's mostly written from Inp-Earth's PoV, and 'we' didn't know their name for themselves (and the fact that their native language is a derivative of Greek is meaningful).
A Summary of a Report on Venus and its Inhabitants, by the Seleneans, or, the Amazon Women on the Moon.
Dp-Venus is a hot world, though not so hot as Inp-Venus. Where land crosses the equator, there is only a barren desert, and where the sea crosses it, the surface boils (though it is cooler, much farther down). This has lead to a pair of hemispheres almost totally isolated from each other, as well as some quite... interesting weather patterns. The Northern hemisphere is dominated by amphibian-like lifeforms (including the one known native sophont race), having few native reptiles, and no native birds or mammals (though they do have some flying creatures, including several species of flying amphibianoid). The Southern hemisphere is dominated by arthropods, and has few native amphibians, and no known native reptiles, birds, or mammals, nor apparently any native sophonts.
The native sophonts, called Venereans or 'Salamander-Men', found in the northern hemisphere are tailed amphibianoids standing an average of 5'3", and resembling to some degree a cross between a salamander and the classic Godzilla, with a vertical, paddle-like tail. It is believed that they are only distantly, if at all, related to any Earth life-forms, though the Seleneans are uncertain of this. They are primarily swamp-dwellers, though they have been known to build villages, towns, and small cities along and within large lakes or rivers. Unfortunately, they are highly susceptible to telepathy.
Five hundred years ago, the most advanced of the Venerean civilizations were undergoing a form of
Bronze Age collapse, as they transitioned between the Bronze Age and the Iron Age. This made them even easier for extra-solar invaders, the Cythereans (believed to be descended from humans taken from Earth long ago, and genetically engineered to their current state, much like the Seleneans suspect themselves to be), to conquer, and their telepathic susceptibility made them far too easy to enslave (which, most likely, is why their world was targeted).
According to the ancient alien scanning devices that the Seleneans have been studying, the Cythereans entered the Sol system from hyperspace by passing close enough to Jupiter for its gravity to drag them into normal space, but far enough out, and far enough from any of the moons, not to crash into anything. The Seleneans believe this was intentional, as exiting hyperspace without the need to use the mass-shadow of a planet is beyond the technology that the Cythereans appear to have (and beyond the Seleneans' own (slightly less advanced) technology, though they know some of the races living on Mars can do it). Likewise, entering hyperspace requires a projector larger than the vessel to be projected (though the Martians seem not to need this). First an uncrewed probe arrived, then years later, a fleet of their characteristic ovoid vessels. Signals intelligence from the Cythereans (again, intercepted and recorded by the alien sensors) indicates that they were expecting construction ships to arrive with parts and engineers to build a hyperspace projector a few years later, but they never did, nor did anything else from their empire, beyond garbled signals traffic indicating a great and unexpected disaster.
Cythereans, whose women are called 'She-Devils' by the Seleneans, are a telepathic race: They can read surface thoughts, make themselves seem more charismatic or frightening, shield their minds from telepathic attack, and are skilled in mind-control. They can implant post-hypnotic suggestions with a touch (or sometimes without one), manipulate more emotions than just awe or fear, or even perform what amounts to mental surgery, rewriting the victim's personality as they please. Worse, their victims will instinctively rationalize their actions under the She-Devils' influence. However, they are unable to directly remove or alter memories (at best, they can create a phobia against remembering or thinking about certain things, or a delusion that the memories are false), a weakness that a skilled deprogrammer can exploit.
Some She-Devils professionally specialize in one or more specific mental changes, such as turning someone into a 'happy, willing slave', or a 'savage gladiator' ("I want him in the games until he dies playing" is a legitimate criminal sentence on Venus), or removing the same from one whose sentence is up, or who has received a pardon. Of course, very few non-Cytherean slaves are ever freed.
In terms of personality, female Cythereans are frequently ill-tempered bullies, and sometimes sadists or control-freaks, as well, along with varying degrees of (somewhat justified) overconfidence. Mothers will often directly shape their offsprings' personalities, to be sure they 'turn out just right' (though their definition of 'right' seems odd to the Seleneans). In terms of appearance, they look, well, rather like a slightly racist 1940s Hollywood casting director was told to find a bunch of 'tall, pretty women'.
Male Cythereans tend to look like medium-height, moderately attractive Caucasian men. They are generally better at shielding their minds than the women are, and are good at sensing the use of telepathy (though it takes them time to develop both), but rarely have any mind control powers, themselves. They frequently lack a lot of what we would see as the negative traits possessed by the women, unless their mothers preferred them that way, but do tend to be loyal to their society, and don't seem to mind being second-class citizens.
Cythereans' powers tend to develop fully after puberty, and are fairly weak, before then.
The Cythereans live primarily in settlements in the northern parts of the Northern Hemisphere, and in a few, smaller settlements in the southern parts of the much less explored Southern Hemisphere. Their basic family unit generally consists of two to four women, one or two men, and often about as many children as there are parents, with the household lead by the strongest telepath (which may mean the one with the best mind shield, or the one best at mind control, or the one with the best balance of both); male 'Alphas' are rare, but not unheard of, and only get in trouble for it if they make trouble for those outside the family unit, or are too blatantly abusive. Very wealthy She-Devils might have more men in their harems, if they wish, and some family groups consist only of women, some of whom might adopt, or get artificial insemination (or natural insemination, for that matter). If there are any purely gay men among the Cythereans, no one knows of them (which is sadly unsurprising, given the way mind control is thrown about).
Their total population, at least in this star system, is probably less than one billion.
The Seleneans don't know what started the war with Venus. The oldest of them were teenagers at the time, and government records of the time were among the first things destroyed. They do recall that a few Cythereans were granted political asylum in some of the Lunar cities, shortly before the war began. They aren't sure if there's any connection, but that's the only thing they can think of.
Militarily, the Cythereans have almost exclusively female officers, mostly male NCOs (odd, given the relatively small number of men), and robots at the lowest ranks. Their standard sidearm, which is built into the right arms of the robots, is a ray gun that can fire either a rather wide beam stun ray, or a narrow beam death ray. Visually, the use of the weapon causes the effected area or being to briefly turn white, then resemble a photographic negative, then white again, and back to normal; Sometimes the cycle is repeated a few times, for greater power - this is done faster for the death ray, and more slowly for the stun ray. Neither seems to have any effect on machinery, so they also carry
gyroc weapons, grenades, and occasionally plasma-throwers (effectively a much, much hotter flamethrower).
The report itself reads something like a little girl with a black eye warning the new kid how evil the local bully is. The Seleneans' actual situation is metaphorically closer to a little girl who lost both parents, both legs, and one arm, then proceeded to cauterize the stumps with her remaining hand, and then survive hiding in someone's back garden for a few years, before asking the people in the new building down the block to help her build and install the cybernetic limbs her parents invented, in return for access to the technology... and then told them how evil the person who did this to her is.
Crunch: The ray gun's stun ray functions as Sleep 4 (Psionic Powers p49) with the Cone (5 yards) enhancement, a maximum range of 50 yards, and an effective skill, for the Quick Contest, of 16. It also does 1d-5 Toxic damage. The repeated cycles mentioned above add 2 levels to Sleep and one 1d-5 tox per repeat.
The death ray is as above, but removes Cone, increases range to 100 yards, and does 1d+12 tox per cycle, as well as an Affliction of Easy to Kill 10 (unmodified by number of cycles).