Martian
Martians are creatures native to the planet Mars, a neighbor of Earth in the Sol system.
16,000 BCE, the Martians were a singular race called the Burning. Malevolent and hostile, their relative lack of technical capability kept them from being a threat in the millennia previous. Eventually they developed a means for interstellar flight, and attacked Earth. Atlantean magic handily repelled them, and Asgard set satellite guardians in place to monitor the planet.
Anticipating Ragnarok, Oa developed a more permanent solution. A genetic plague was released on Mars that both sterilized the Burning and caused their species to diverge, ending their ability to reproduce asexually in psychic conflagration.
The end result was two species of Martians with similar morphology. The White Martians tended to be more hostile and aggressive, but were very independent and reproduced at a slower rate. Green Martians were more social and civilized, but less inclined to violence.
In 14,000 BCE, the White Martians attempted an invasion of Earth, in retribution for Oa's harsh control of their species.
Their advanced technology revealed traces of Celestial DNA strains in humans. The Martian invasion force encountered the Inhumans and ousted them from the Kree science colony vessel. The invading White Martians attempted to build permanent portals to their homeworld, but the damage to the Demiurge destabilized their efforts. The portal remains intermittently active in Central America.
Five years later, the Green Martians gained enough of a foothold on Mars to pursue their enemies to Earth. They assisted the Inhumans with retaking their home on the Kree vessel, and many White Martians were lost to space in time when their transit portal was destroyed with an invading force en route.
The Greens prepared to withdraw with their cousins, but humanity had other ideas. The Inhumans burned down 100,000 acres of rain forest and killed the thousand remaining White Martians in the conflagration. This action so horrified the Green Martians that they abandoned their colony plans and returned to Mars.
