DeathWraith,
Undefined,
13 years ago
Over the years i've come to get over the idea of "pure blood alien". As speculated before, the only pure blood aliens would have been the very original ones, and at the rate that they reproduce and get killed, i would say that generation didn't last very long. Plus, the reason any species changes its features is to become more efficient. Therefore, the pure blood drones would be generally weaker than a drone with human, dog, or predator features. You have to remember that aliens did not appear because of or for humans. So when the aliens reproduce through humans, they are not any more pure blooded than the result of reproducing through any other species.