Chimera (Resistance)



The Chimera are an alien species and are the main antagonists of the Resistance series. Hailing from an unknown planet, the Chimera previously inhabited Earth millions of years prior to humanity's existence, until they were forced to leave the planet following a devastating conflict with another alien race. For reasons that remain unknown, the Chimera returned to Earth in the early 20th century and waged a genocidal war against humanity.

In When the Cold Breeze Blows Away, the Grand Alliance just proved that there might be traces of Chimeran civilization hidden underground not only on Earth, but also in different places as well.

Soon after, the Chimera now arrive in the 21st century (during World War III and waged a genocidal war against humanity (including other sapient species at some point) once again, and this time, in real life unlike in Resistance, which is pretty much earlier for them to invade.

At first, they were only neutral since they try to eradicate humans on Earth, but after the second battle of New York City, their empire  eventually made an alliance with the Coalition of the Red Star, but some Chimeran factions who don't join the Coalition either join the Grand Alliance (United Chimeran Republic) or the Global Liberation Union (Chimeran Reich), thus starting the Chimeran Civil War.