Nephilim
...Nephilim (genetic hybrid between Oraphim and Reptilian) are easy to possess and mind control for their [Reptilian] negative alien agenda.
References
Also:
The controllers handpicked the hybridized Nephilim bloodlines that they could corrupt through the mind control programs in order to carry out their "enslavement through tyranny" agenda. (This does not mean that all Nephilim bloodlines are corrupted, it means they are hybridized genetic beings that have been perpetrated upon to be recruited as the enforcers of the negative alien agenda.)
References
Term first found: Page 183, HGS Manual