The Lost Song
These are the alien invaders. No one seems to know where the name “Decia” comes from, but that is what the media and most people are calling them. They are incredibly technologically advanced; only with unified effort are the people of the world barely able to keep their attacks in check. It’s assumed that they are responsible for the planet-killing anomaly that looms ever nearer every day, and while their first attack was mostly defeated there are assumed to be millions of them left out in the solar system. They are occupying the near planets; and almost every day they launch raids against areas on the surface.
They seem to look like a cross between a zergling, a spider, and one of the beasts from Aliens, from what has been seen so far.