HYBRIDS 
"The human race is not the first that they have found, or that they have attempted to work with," she said. "We are just the ones found to be the most compatible and the ones that it can work with because they can't sustain themselves for an awful lot longer because they are a result of a genetic mix, alteration, manipulation, whatever the word is."
-- Chapter 8, The Threat by David M Jacobs PhD
 
The Creation and Development of the Hybrids
 
The Organisation of the Hybrids
 
The Fallen