Terraformar

The Terraformars are humanoid mutant cockroaches and the main antagonists in the Terra Formars Manga Series.

Physiology
The Terraformars are human-sized cockroaches bearing a physical resemblance to Homo erectus. They have wings, which grants them the ability to fly.

History
In international effort to terraform Mars for human habitation, cockroaches with some moss were sent on Mars. The plan was for the cockroaches to feed on the moss and and promotes the moss's growth with their carcasses thus creating a viable atmosphere. Five hundred years later, when the humans from the shuttle Bugs 1, revisited Mars the cockroaches had evolved, possessing human like appearance.

The scientists were slaughter but not before the last remaining member sending a head of one of the creatures to warn Earth. In retaliation, Earth created the Bug Procedure to enhance humans with insect traits to fight the cockroaches or Terraformars and reclaim Mars. Abroad Bugs 2, a team of desperate volunteers and convicts were sent to Mars, but unfortunately majority of the team were killed by the overwhelming numbers of Terraformars. From the incident only two members of the crew managed to escape back to Earth.

Forty-two years after the Bug 2 tragedy, the A.E. Virus began to manifest and spread throughout Earth. The main culprit was believed to be the Terraformars virus carrier. An international effort was made to send a third mission, Annex I, to extract fresh Terraformar samples to create a vaccine. However the virus turned out to be a international conspiracy and possibly man-made. The reason for sending the mission to Mars was not for a vaccine but to harvest the Mosaic organs. Organs that allowed humanity to splice the DNA of other animals to create more powerful warriors. It was the intent of many nations to acquire these organs from the Terraformars to create a new super-soldiers for their militaries.

What was suppose to be a humanitarian effort devolved into a proxy war on Mars by the various nations. The humans from Annex I soon learned that the Terraformars had undergo major social reorganization and biological evolution. Now sporting more diverse forms using the pilfered Bugs Surgery as well as leftover Earth technology, the Annex I were assailed on many fronts. To make matters worse the Terraformars had quickly adapted to the new Mosiac Operation and quickly stole the new abilities from their human victims.