For the most part, we are dealing with another species that is humanoid in shape, but Reptilian in heritage.
Their leader elite are the “Draco”. They even have special “wings”, which are flaps of skin, supported by long ribs. These can be folded back against the body. They are also known as the “Dragon Race” and their symbology usually includes the Winged Serpent. There are elements of their species which do not have wings - the “soldier class” and “scientists” have none.
They are all ‘cold blooded’ and have to have a balanced environment to maintain body temperature.
The “soldier class” of the species can bury themselves in the ground and wait long periods of time in order to ambush their enemy. If need be they can survive on one very large meal every few weeks or even once a year.
As a species, they are well suited for space travel due to their ability to hibernate. These reptoids have scales which protect them from moisture loss. They have no sweat glands.
The scales (scutes) are much larger on their backs, making the skin waterproof. The scales elsewhere on the body are more flexible. They have three fingers with an opposing thumb. The eyes are catlike and large. They have twin nostrils at the end of a short stubby muzzle. They are mostly meat eaters.
The mouth is more like a slit, but they have teeth which are differentiated into incisors, canines, and molars.
They average from 6 to 7 feet in height.
The Reptilians don’t seem to be dependent on us as a food source, although part of their experimental work with us is toward the end of future food supply/production.
When they become involved with crossbreeding (humans and Reptilians), they are not doing it for racial survival but for the purpose of creating a subclass (slave race) within their own culture. These half-breeds are to be biological war machines and laborers, etc. They are to be someone else’s property.