Deathdrop, I personally prefer to think the Aliens' origin is far more Alien than simply being created in a Jockey/Mala'kak lab, I think they discovered the ruins of a planet of a race of beings, so far advanced that their technology had 'fused' with their machinery, forming a 'second nature', of this 'second nature' were the Aliens, or 'Xenomorphs' as they are foolishly termed by Humankind. Anyway, Bloo, It would only help explain why it was so calm, my theory, there was no female around, nor other males around to compete with, thus explaining why the Drones in 'Aliens' were so much more aggressive and 'feral-like' than the one in Alien, another possible theory, of why it's cowl was smooth, is it could have just been a different sub-species, sort of how there are different nationalities of humans, kind of like the red aliens from genocide.