Eta Knights

A group of Chaos Engines created from the genetics of Drake Ryunexo. Possibly one of the strongest generations of Chaos Engines created.

Silent Angel
Silent Angel is the strongest of the Eta Class, but cannot use Chaos Drive, he can use his Chaos Engine Mode to further strengthen his formidable Aura Dragon abilities. He is one of the closest to being identical to Drake in appearance.

Aura Dragon
Silent Angel is capable of creating an Aura Dragon far stronger than Drake's at will, though the extent of the Dragon's power is not known, it appears to have two forms, a basic black dragon, and a evil, sickly dark green skeletal version that serves as armor, the strength of which is not known.