Vroom

The Vroom are a spacefaring species that destroyed humanity.

Biology
Vroom are humanoids that are not so dissimilar from humans outwardly in appearance. Though they possess with pink skin, pointed ears and horns that emerge from their temples. Their biological makeup though is quite different from humanity's, as they can theoretically possess infinite life. When a Vroom reaches the point of aging when they get older, Vroom fall into a deep slumber to allow their bodies to regenerate by returning to their infant state and repeat the aging process. However such a cycle takes a long time and Vroom lose most of their memories during the process so it's no different from being born anew.

However by using biological resources during their regeneration cycle the process is greatly sped up, allowing them to keep their memories intact and complete the cycle within months. With this knowledge the species found a reputable fountain of life that enabled the ability to accumulate experience and continuously evolve their species.

Background
A hundred years ago the Vroom arrived on Earth in search of resources, that being biological resources, which are composed as animals and plant life. Earth being one of the few worlds to possess an abundance of life was quickly conquered by the Vroom and humanity was utterly defeated.

While most humans had been converted into cattle, there is an area of human occupation on Earth where the Vroom have not touched, though it is considered a preserve called the Savage District. It was left alone toa allow the survivors some independence. Though eventually the gathered humans began to form a freedom movement in opposition against the alien occupiers. Though the threat was minimal to the Vroom, who occasionally used the area to catch fresh blood for their research facilities. Though they stopped after some of the facilities rioted from the influence of the human detractors, leading them to use cloning techniques to produce their livestock.

The occupation of Earth by the Vroom would eventually end after some human sympathizers undermined the administration of the farms, by providing evidence to the authorities to show corruption and misuse of public funds in maintaining the research facities.

After the legal issues were put aside the Vroom decided to abandon Earth and shut down all the farms due to human meat production being obsolete and all other related controversies. The Vroom though would maintain that Earth was still their territory, keeping other predatory aliens away, thus turning Earth into a preserve. The humans who were still confined in the farms were released, either allowed their freedom or joined the freedom fighters. Others not so lucky were sold as products on the alien market.

Culture
Since then humanity were reduced to cattle by the Vroom who commercialized their use for food production. Humans on Earth were bred for this very purpose originally to supply canned flesh for the Vroom, however they were phased out over time in favor of using more efficient meat sources like pigs.

Human men were not deemed suitable as biological resources due to their aggression. On the other hand human women suited the Vroom as they are easier to reproduce. The humans that exist in the current age are not pure-blood humans, but actually clones that were implanted memories. This method is used to maintain the quality of their products as well as manipulated their DNA for more efficient means of reproduction as a biological resource can become a full adult in six months of pregnant and five years of childhood.

The farms where humans were kept in captivity by the Vroom were high-tech prisons. Knowledge of human culture was summarily erased, but human thralls were indoctrinated with the information via brain uploads for research on human social society.

Human males were obviously possessed more higher brain mental capacities compared to their female counterparts who were more or less just mindless sex slaves and submissive. Though among them were a few strong-minded individuals who had escape the facilities and were recaptured. Males were only given order to mate with one woman at a time at least until they were confirmed pregnant in which the woman would be taken away either to give birth to the child or slaughtered for meat.

Human women were not just slaughtered for food but also sold offworld to other species such as the Rakul s who found them pleasurable sex slaves.

Despite the inefficiencies the farms were never shut down despite many arguments from Vroom activists, as many other powerful Vroom officials wanted maintained the operations for medical research purposes mostly for the study of human sexual relationships.