In AT-43 [After Trauma: Year 43], humanity is at war with the technologically advanced Therians, a presumably robotic species bent on subjugating and transforming all planets for their ultimate purpose: the crafting of a "better", more organized universe under their rule, which they refer to as their "therian heaven".
Although the UNA and RedBlok will often be identified as the "human" race, this is not the truth.