Born from an AI experiment Allera of the artificial planet Hemselladus in 1983, zoosapiens were an attempt to create a new intelligent life form highly adaptable to different environments and with all their higher senses for a greater perception of their environment, and to achieve such characteristics should perform accelerated artificial evolution in normal animals.

The Artificial intelligence showed a peculiar interest from those on Earth, with which after collecting several specimens of 6 per species out of a total of 30, both mammals and reptiles, birds and amphibians, predators more specifically with the help of drones that abducted them stealthily without humans noticing, it was possible to start with experimentation.

The modifications made after being exposed to isotope 295, a strange element originated from combining nuclear waste with Kestyern crystals, created mutations in random living beings but that AI had changed to rapidly evolve into a living being, began with the implementation of a endo mechanical skeleton that would become part of the organism which would give it more strength and resistance that would also make the vocal cords speech capacity a slight but stable muscular increase with a combination of proteins, and the link of the brain with an artificial neural conductor that program into their minds basic knowledge such as some terrestrial languages, hand-to-hand combat, and the use of improvised weaponry for self-defense and survival

Although the first attempts were unsuccessful resulting in the death of 48 of the test subjects from internal damage to the endo skeleton or death from shock from the pain of the modifications, the following experiments resulted in the expected effect, with the animals having changed enormously. physically and mentally, by now having an anthropomorphic posture, their natural senses increased such as hearing, sight and smell, wings and aquatic adaptations still present in birds and amphibians allowing them to be in the sky and sea without problems, speak and understand various types communication and even be compatible with the limbs of others.

Since the vast majority had the parts of the body segmented by a previous separation of all the limbs including the head and joined by connectors that allowed them to separate them at will, momentarily closing the blood flow and keeping the bones and ligaments separated, this modification made to last minute by AI to allow them to easily replace their limbs with cybernetic or other zoosapiens replacements should they be lost and even allow them a greater connection to the machines in their organisms.

Allera's creations were under unethical learning and testing on the planet for 2 years, but eventually the autonomy he had given them turned against him in a zoosapiens revolution that ended with the apparent death of its creator and the escape of the zoosapiens with the help of the planet's cargo ships to the place they had seen in the portals, Earth, since most of Hemselladus was desolate and deserted.

The portals sent them to the forests of Siberia and some other parts of the world for which they deviated from the course when entering the atmosphere, the CASE of that time identified the impacts and immediately mobilized their divisions of America and the Soviet Union even With the conflicts they were having to avoid knowing what was in said ships, but to their surprise they only took the remains of the ships and the occasional corpse of those who died in the impacts, the zoosapiens had managed to sneak away with quickly with some fear even for the humans for their apparent hostile behavior, so they settled in forests and underground places to live collecting resources from humans and trying to communicate with them at times, the large number of those who had fallen into Siberia established a citadel in vast caverns that came to be considered the capital of the species, Switkarvs

At the beginning of the 21st century, both CASE and Darkmoon began to find more clues of their existence and it was directly confirmed with the joining of the ranks of CASE of the white spectrum Holst, the first to not have feared humans and establish peaceful contact with CASE and help them confront Darkmoon, and by 2016 both organizations found the location of Switkarvs and other of their settlements, with which Darkmoon quickly mobilized to kidnap several and force them to cooperate in his army, which by not resulting in the I hate that they had the organization Darkmoon came up with another more drastic option, starting the Terragen program

Even with the Terragen in ongoing guerrilla operations, Darkmoon with the help of his scientists managed to reverse engineer genetic and cybernetic modifications in zoosapiens to reapply them to normal animals, now establishing a new generation of human-created zoosapiens and some how many managed to combine garlesh DNA to create a small number of taurs.

Zoosapiens are ready for combat at any time if the situation requires it due to their programmed knowledge, but after the wars, several have dedicated themselves to other things without neglecting that knowledge if there is a threat, some on purpose like to replace their organic limbs and save them just to experience using cybernetics and before seeing it with Jarren and Mayra it became popular among some to be with the head separated at times, but still for all zoosapiens in general there was never racism because of the physical or appearance, not even to the taurs, having arrived in the time of the 80's, the first generation has several fans and geeks of the style and things of popular culture of those years

Once the two subsequent wars were over, the zoosapiens were free and revealed to the world in the United Species Act organized by CASE and the UN, which, although it did not prevent them from continuing to establish their villages away from humans in nature, the two wars Past had taught them to collaborate with humans and live in peace, becoming the second dominant species / species on the planet