I'm bringing back Kai (as a full fledged human) along with Exile and Panzer for Dual Edge. The three of them will be involved as an elite law enforcement.

Humans are among a small number of races incapable of manipulating aura naturally. Therefore for direct combat they resort to augmented weaponry, usually in the form of rifles. However non-augmented weaponry, namely mechs and various vehicles, are the focus of human military engineering.