The Plague

The Plague is a group of several alien species that currently inhabit the caverns of Mars. The Plague vary in sizes, appearance and abilities. They are speculated to be an invasive species not native to Mars.

History
The Plague are known to be an invasive species on Mars that have been brought there in an unknown historical point. The Plague spent the most of it's history on Mars in a deep hibernation, it's existence completely unknown to the humans.

Ultor Plague of 2075
The Plague was discovered in 2067 by Axel Capek and his science team, which they managed to take some DNA samples from. The Plague has massacred most the science team, with Axel Capek surviving. Axel Capek would later on experiment with the Plague DNA and created hybrid mutants by splicing the DNA with different species from Earth and keeping it a secret from the public. These mutants were later discovered by the workers at Ultor Corporation during the First Martian Revolution in 2075, and were called the Ultor Plague of 2075. The Hybrid Mutants were destroyed the same year the First Martian Revolution ended, in 2075.

Plague Armageddon
The Plague was later rediscovered five years after the destruction of the Terraformer on Mars, in 2175 by Adam Hale, leader of the Cultists. Adam Hale tricked an individual named Darius Mason into opening a seal, in which the Plague hibernated in, releasing them free and starting a conflict between the humans and the Plague, called Plague Armageddon. Many species of the Plague were fighting off against the martian colonists in the war, with the Plague eventually loosing against the colonists and having their Queen significantly damaged. The colonists would eventually repair the Terraformer, rendering the Earth-like atmosphere deadly towards the Plague, suffocating them. The remaining living Plague species retreated deeper into the martian caverns to avoid the deadly surface.

Biology
The Biology of the Plague varies between the species of the Plague. The most prominent similarities between the species of the Plague is their bioluminescence. Most of the species appear insectoid, however, some species have evolved into humanoids as a side effect from consuming and absorbing DNA from humans. All of the Plague have their unique abilities, ranging from ranged to close attacks. Most Plague are taller than human beings, an exception being with the Creepers, who are generally shorter than humans.

Hybrid Mutants
Reapers, Sonar Whales, Mutants, Giant Worms

The Plague
Creepers, Ravagers, Wraiths, Berserkers, Behemoths, Tentacles, Monoliths, Queens